Article
Materials Science, Multidisciplinary
Mozhgan Shokri, Abbas Zarei-Hanzaki, Hamid Reza Abedi, Jae Hyung Cho
Summary: The study investigated the correlation between microstructure/texture evolutions and high temperature flow behavior in Mg alloy containing long period stacking order (LPSO) phases. The annealing treatment effectively strengthened the alloy and decreased ductility, with blocky LPSO assisting dynamic recrystallization and lamellar LPSO increasing alloy strength. The findings suggest that microstructure and texture evolution play a significant role in the high-temperature behavior of the Mg alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Z. Aalipour, A. Zarei-Hanzaki, A. Moshiri, H. R. Abedi, Daudi Waryoba, A. Kisko, L. P. Karjalainen
Summary: The microstructure and microtexture changes of an extruded and annealed magnesium alloy were investigated under different strain and processing conditions. The results showed that the material underwent noticeable refinement even at low applied compressive strain. Recrystallization process was completed at a true strain of 0.3, and grain refinement was attributed to the LSN and CDRX mechanisms. At higher strain levels, most grains were found in deformed states and the microtexture only changed in terms of intensity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Metallurgy & Metallurgical Engineering
Wei Liu, Yu Su, Yuntao Zhang, Liwen Chen, Hua Hou, Yuhong Zhao
Summary: This study investigates the variation in LPSO structures, dynamic recrystallization, and mechanical performance of Mg89Y4Zn2Li5 alloys fabricated at different extrusion speeds and die angles. It is found that the block 18R LPSO structures elongate while the lamellar 14H LPSO structures dissolve. The hot-extruded alloys exhibit a full DRX microstructure, and the DRX grain size decreases with decreasing extrusion speed and die angle. The Mg89Y4Zn2Li5 alloy achieves an excellent strength-ductility balance at a low extrusion speed and small die angle.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
M. Mosayebi, A. Zarei-Hanzaki, M. Tahaghoghi, H. R. Abedi, A. Moshiri, A. Ghaderi
Summary: The present research investigates the texture and microstructure evolution of a magnesium composite reinforced with SiC particles and rare earth (RE) during friction stir processing. The study reveals that the mechanical stirring and frictional heat induce dynamic recrystallization and develop a strong basal texture component. The presence of second phase particles stimulates continuous dynamic recrystallization and particle stimulated nucleation while delaying discontinuous dynamic recrystallization. The formation of a new rare earth texture component is observed through simultaneous activity of basal and non-basal slip systems during dynamic recrystallization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Wei Liu, Yuhong Zhao, Yuntao Zhang, Chuan Shuai, Liwen Chen, Zhiquan Huang, Hua Hou
Summary: Understanding the dynamic precipitation of LPSO phase and its effect on dynamic recrystallization in Mg-based alloys can provide insights for the manufacturing of high-performance alloys. This study found that the increase of Y and Zn atoms promotes the dynamic precipitation of 14H-LPSO phase in non-DRX and DRX grains respectively during hot extrusion.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Chemistry, Physical
Yu-Ying He, Gang Fang
Summary: In this study, the dynamic precipitation (DP) of Mg17Al12 phase during the deformation of an Mg-Al-Zn-RE alloy was investigated. The effects of temperature and strain rate on the volume fraction, number density, and average size of Mg17Al12 precipitates were studied. Phenomenological models linking the precipitation parameters with deformation conditions were established and validated. The pinning effect of DP on grain growth and the influence of temperature on DRXed grain size were also discussed. The results provide insights into the understanding of microstructural evolution in the Mg-Al-Zn-RE alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Metallurgy & Metallurgical Engineering
H. T. Jeong, W. J. Kim
Summary: This study investigates the influence of intragranular lamellae-shaped long period stacking ordered (LPSO) phase on the hot compressive deformation behavior and deformation mechanisms of Mg-8.2Gd-3.8Y-1.1Zn-0.4Zr alloy. The results show that the presence of LPSO phase increases the activation energy for plastic flow (Qc) and affects the deformation behavior and high-temperature strength of the alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Chunyu Dong, Xianming Zhao
Summary: The DRX behavior and microstructure evolution of HSLA steel were investigated through isothermal compression experiments. The flow stress was found to increase with the strain rate and decrease with the deformation temperature. A constitutive equation was established based on peak stress, and the deformation activation energy was determined. Processing maps were constructed to analyze the flow instability under different conditions. The nucleation mechanism and grain size of DRX were also studied.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Hong Xu, Yu-Jie Zou, Yu Huang, Pin-Kui Ma, Zhi-Peng Guo, You Zhou, Yu-Peng Wang
Summary: Electric pulse can enhance plasticity of metals by facilitating room-temperature dynamic recrystallization for texture weakening, and subsequently improving plasticity. Our study found a strong dependence of peak flow stress and fracture strain on current density in a polycrystalline Mg-3Al-1Sn-1Zn alloy.
Article
Nanoscience & Nanotechnology
Qinghe Wei, Lin Yuan, Xiao Ma, MingYi Zheng, Debin Shan, Bin Guo
Summary: This study investigates the effects of multidirectional forging (MDF) on a low-cost rare earth magnesium alloy, revealing that the Mg-7Gd-2Y-1Zn-0.5Zr alloy shows increased strength and elongation after undergoing extrusion, MDF, and T5 treatment. The alloy strength enhancement is attributed to solid solution strengthening, grain refinement, and aging precipitation mechanisms. Additionally, the dynamic recrystallization mechanism shifts from discontinuous to continuous during MDF at reduced temperatures, impacting deformation behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
M. G. Jiang, C. Xu, H. Yan, T. Nakata, Z. W. Chen, C. S. Lao, R. S. Chen, S. Kamado, E. H. Han
Summary: This study investigated the static recrystallization and texture evolution in an extruded Mg-Zn-Gd alloy, providing direct evidence of rare earth (RE) texture evolution during grain growth. The research findings contribute to understanding the mechanisms involved in forming RE texture during extrusion and developing wrought Mg alloys with improved formability.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Jiyu Li, Fulin Wang, Jian Zeng, Chaoyu Zhao, Li Jin, Jie Dong
Summary: This study designed microstructures with different interspacings of intragranular lamellar long period stacking ordered (LPSO) phase by altering the cooling rate after solid solution heat treatment, and investigated the effect of the interspacing on the dynamic recrystallization (DRX) of Mg-Gd-Y-Zn-Zr alloy. It was found that closely spaced intragranular LPSO lamellae suppress DRX. The underlying mechanism was further revealed using EBSD analyses and TEM characterizations.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
R. S. Jin, J. Zhang, X. J. Zhou, S. X. Pan, J. H. He, J. N. Chen, X. Z. Lu, X. M. Chen, D. W. Zhou
Summary: In this study, the microstructures and hydrogen storage properties of Mg-Y-Zn alloys with different Zn content were systematically investigated. The results indicate that the formation of LPSO phases increases with higher Zn content, mainly located at the grain boundaries. The distribution of YH2/YH3 hydrides in these alloys becomes non-uniform due to the higher concentration at grain boundaries with increasing Zn content, resulting in poorer hydrogen storage performance.
MATERIALS TODAY COMMUNICATIONS
(2022)
Review
Materials Science, Multidisciplinary
Yongfeng Li, Ang Zhang, Chuangming Li, Hecong Xie, Bin Jiang, Zhihua Dong, Peipeng Jin, Fusheng Pan
Summary: This paper reviews the recent progress and applications of high-performance Mg-rare earth alloys, including alloy design, strengthening mechanism, and forming processes. The research aims to provide references for the design and application of Mg-rare earth alloys, contributing to further advancement in this field.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Metallurgy & Metallurgical Engineering
Janet M. Meier, Josh Caris, Alan A. Luo
Summary: Mg-rare earth (RE) based systems offer important commercial alloys and opportunities for high strength applications. The phase diagrams, microstructure, and strengthening mechanisms of these systems are complex. This review provides critical insights into phase equilibria and strengthening mechanisms, highlights the combination of precipitation and long period stacking order (LPSO) phases for superior strength and ductility in Mg-RE based cast alloys, and suggests future research directions for alloy design and industrial scale applications.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Cheng-Dong Li, Xiao-Jun Wang, Wei-Qing Liu, Ku Wu, Hai-Long Shi, Chao Ding, Ming-Yi Zheng
Summary: A novel approach to fabricate bulk carbon nanotube-reinforced Mg matrix composites with uniform carbon nanotubes has been successfully developed. The approach involves pre-dispersion and ultrasonic vibration, resulting in the homogeneous distribution of single carbon nanotubes in the composites. The presence of carbon nanotubes significantly improves the mechanical properties of the composites and achieves good interfacial bonding with the matrix.
Article
Metallurgy & Metallurgical Engineering
X. Q. Liu, X. G. Qiao, R. S. Pei, Y. Q. Chi, L. Yuan, M. Y. Zheng
Summary: The influence of extrusion rate on the microstructure and mechanical properties of the AXM1104 alloy was studied. With increasing extrusion rate, the grain size and particles diameter increased, while the grain boundary segregation and basal fiber texture decreased. The tensile yield strength decreased and the elongation to failure increased as the extrusion rate increased.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Wanting Sun, Bo Wu, Hui Fu, Xu-Sheng Yang, Xiaoguang Qiao, Mingyi Zheng, Yang He, Jian Lu, San-Qiang Shi
Summary: Surface mechanical attrition treatment was used to produce a gradient nanostructured layer on WE43 magnesium alloy, resulting in enhanced mechanical properties with exceptional strain hardening effects.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
S. Z. Wu, X. G. Qiao, S. H. Qin, Y. Q. Chi, M. Y. Zheng
Summary: The microstructure and mechanical properties of Mg-Y-Ni alloys with different volume fractions of block-shaped LPSO phase and number densities of plate-shaped gamma' phase were investigated. It was found that the increased volume fraction of LPSO phase improved the tensile yield strength of the alloys, while the plate-shaped gamma' phase also provided effective strengthening. The alloy with the highest volume fraction of block-shaped LPSO phase and number density of plate-shaped gamma' phase exhibited superior tensile yield strength after extrusion.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
T. Nakata, C. Xu, Y. Ito, S. Kamado
Summary: The effect of homogenization on microstructures and tensile properties in a dilute Mg-Zn-Ca-Mn alloy sheet was investigated. High-temperature homogenization dissolved eutectic intermetallic phases before rolling, but led to significant growth of alpha Mn precipitates and coarse grain structure after rolling and annealing. Rolling without homogenization or after low-temperature homogenization resulted in increased fraction of intermetallic phases, but achieved a fine grain structure due to dispersed alpha Mn precipitates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Huafeng Liu, Jing Zuo, Taiki Nakata, Chao Xu, Guisong Wang, Hailong Shi, Guangze Tang, Xiaojun Wang, Shigeharu Kamado, Lin Geng
Summary: The effects of La addition on the microstructure, thermal conductivity, and mechanical properties of Mg-3Al-xLa-0.3Mn alloys in as-cast and as-extruded states were investigated. The results showed that the addition of La element led to an increase in thermal conductivity due to the formation of Al11La3 phases. However, the as-extruded alloys exhibited lower thermal conductivity compared to the as-cast alloys due to the presence of defects, particularly at the grain boundaries. The anisotropy of thermal conductivity was observed in the as-extruded alloys as a result of texture formation. The tensile and yield strength of the as-extruded alloys decreased with increasing La content, while the elongation initially increased and then decreased due to the combined effects of texture strengthening and second phase strengthening.
Article
Nanoscience & Nanotechnology
T. Nakata, C. Xu, K. Sugiya, Y. Yoshida, K. Yoshida, L. Geng, S. Kamado
Summary: An anomalous in-plane anisotropy was observed in a basal-textured Mg-Al-Zn alloy sheet due to the high activation of tensile twinning induced by a small fraction of transverse direction (TD)-oriented (0001) poles. This led to deteriorated tensile properties along the TD, emphasizing the importance of microtexture design for high-performance wrought magnesium.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Jing Zuo, Mingquan Zhang, Taiki Nakata, Guisong Wang, Danyang Li, Hailong Shi, Chao Xu, Xiaojun Wang, Wenjun Li, Guohua Fan, Lin Geng, Shigeharu Kamado
Summary: In this study, we investigated the effect of 0-1.0 at.% Al additions on grain refinement and phase transformation of the Mg-2.0Gd-1.2Y-0.5Zn-0.2Mn alloy containing LPSO phase. The addition of Al promoted the formation of the Al2RE phase and decreased the presence of LPSO phase and Mg3RE phase. The Al2RE phase acted as nucleants for α-Mg grains, resulting in a significant decrease in grain size.
Article
Chemistry, Physical
Zhao Yang, Taiki Nakata, Chao Xu, Gang Wang, Lin Geng, Shigeharu Kamado
Summary: A high-performance Mg-8Gd-4Y-0.5Mn-0.2Sc alloy was fabricated using homogenization, hot extrusion, and ageing. The microstructure evolution during homogenization was studied, and an optimum time of 18 h was determined to minimize the volume fraction of second phase particles and maintain a fine grain structure. The alloy exhibited excellent age-hardening ability and strength after peak-aged treatment, with a tensile yield stress of 441 MPa and an ultimate tensile strength of 506 MPa. The high yield strength was attributed to the co-existing bimodal microstructure, fine dynamically recrystallized grains, dense precipitated particles, and nano-scale precipitates. Precipitation strengthening was revealed as the dominant strengthening mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yuanqing Chi, Jinwei Liu, Zhijie Zhou, Shouzhong Wu, Weiqing Liu, Mingyi Zheng
Summary: This study mainly investigates the microstructure, texture, and mechanical properties of Mg-Gd-Y alloys (Mg-8.5Gd-2.5Y-0.3Zr (wt%) (0Zn) and Mg-8.5Gd-2.5Y-0.5Zn-0.3Zr (wt%) (0.5Zn) alloys) under indirect extrusion at different temperatures. The addition of 0.5 wt% Zn promotes the dynamic precipitation of beta-Mg5RE phases, resulting in a well-distributed distribution in the 0.5Zn alloy compared to a local distribution in the 0Zn alloy. The presence of zinc and the extrusion temperature influence the texture formation and mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Industrial
Zijian Zhang, Lin Yuan, Mingyi Zheng, Qinghe Wei, Debin Shan, Bin Guo
Summary: This study developed a large-scale AZ80 magnesium alloy sample through a two-step MDF process and artificial aging. The sample exhibits uniform mechanical properties and good plasticity, making it suitable for load-bearing components. Furthermore, this process can benefit the general application of magnesium alloys since the excellent mechanical properties do not rely on the addition of specific elements.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
S. Z. Wu, Y. Q. Chi, G. Garces, X. G. Qiao, M. Y. Zheng
Summary: The Mg96Y2Ni2 (at. %) alloy with a volume fraction of 50% of LPSO phase was processed by extrusion and ECAP. Different microstructures of bimodal alpha-Mg matrix and fully dynamic recrystallized matrix were obtained by controlling the processing parameters, and the relationship between microstructure and tensile properties was investigated. The extruded alloy at 390 degrees C showed ultrahigh tensile yield strength but low elongation to failure, while the alloy extruded at 450 degrees C exhibited a balanced strength-ductility behavior. Fully recrystallized ultra-fine Mg grains contributed to the increase of elongation to failure. This work provides theoretical guidance for developing Mg-LPSO two-phase alloys with excellent strength-ductility synergy.
MATERIALS CHARACTERIZATION
(2023)
Article
Nanoscience & Nanotechnology
C. C. Li, Z. H. Xia, X. G. Qiao, I. S. Golovin, M. Y. Zheng
Summary: The study investigated the influence of Mn content (0.4, 0.8, 1.2 wt.%) on the microstructure and mechanical properties of as-extruded dilute binary Mg-Mn alloys. Increasing Mn content resulted in a decrease in the volume fraction and size of dynamically recrystallized (DRXed) grains. Segregation of Mn atoms and nano alpha-Mn dynamical precipitates were observed at the grain boundaries, with the amount of precipitates increasing with Mn content. Tensile tests showed that Mn content significantly affected mechanical properties, with the Mg-0.8 wt.% Mn alloy exhibiting excellent ductility at room temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
T. Nakata, T. Matsuno, R. Oki, S. Kamado
Summary: The effect of micro-texture on the tensile properties and room-temperature stretch formability of Mg-Al-Zn alloy sheet was studied. The introduction of micro-texture through solution treatment, hot-rolling, and post-annealing increased the fraction of a unique texture component, which improved the limiting dome height without compromising the strength due to the high activity of tensile twinning and minimal change in the Schmid factor for basal slips. This finding highlights the importance of micro-texture designing for the development of high strength-formability synergy in magnesium alloy sheets.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xiaoqing Liu, Xiaoguang Qiao, Liyao Ye, Xianke Zhang, Mingyi Zheng
Summary: A Mg-1Al-1Ca-0.4Mn (AXM1104, wt%) alloy extruded at 250°C with a ram speed of 0.1 mm/s obtains a unique bimodal microstructure. The as-extruded alloy exhibits a high tensile yield strength of 474 MPa and a low ductility of 2.1%, surpassing conventionally extruded rare-earth-free Mg alloys reported so far. After annealing at 300°C for 10 min, the annealed alloy achieves a good strength-ductility balance, with a yield strength of 426 MPa and an elongation of 5.4%. The ultrahigh yield strength of the as-extruded alloy is attributed to the combined strengthening effect of grain boundary, dislocation, and texture, while the as-annealed alloy is mainly strengthened by both grain boundary strengthening and precipitation strengthening from planar Al2Ca nano phase.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Shuai Zhang, Shuye Zhang, Hongzhi Zhou, Kyung-Wook Paik, Tianran Ding, Weimin Long, Sujuan Zhong, Peng He
Summary: Microwave Hybrid Heating (MHH) is a promising method for material joining, allowing for selective and uniform heating. This experimental study focused on investigating the characteristics and reliability of joints made using nano-Sn-3.0Ag-0.5Cu soldering paste and MHH technique. The research findings showed that the shear strength of the joints reached its peak value under specific microwave power and exposure time, but decreased after thermal shock tests.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Peibin Ma, Mingyang Wang, Aiying Chen, Lijian Gu, Zhiyi Ding, Xiaogui Wang, Bin Gan
Summary: Nano-twinned boundaries in high-temperature alloys play a crucial role in regulating the distribution of nano-precipitates and enhancing mechanical properties.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jiachen Zhang, Fan Lu, Xinxin Liu, Taiwen Huang, Rui Li, Changsheng Tan, Guojun Zhang, Lin Liu
Summary: This study investigates the effects of Re and Ta interactions on the precipitation of the TCP phase in experimental alloys under long-term thermal exposure. The study finds that microstructure segregation is not fully eliminated even with standard heat treatment, and the interaction between Re and Ta enhances the formation of the TCP phase. Thermodynamic calculations and first-principles analysis reveal that Re significantly improves the driving force of TCP phase precipitation. The study also observes a phase transition from the sigma-phase to the P-phase, with Ni playing a crucial role in the diffusion process.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Ronit Roy, Adil Shaik, Matthew Topping, Fei Long, Mark R. Daymond
Summary: This study demonstrates the improvements in characterizing localized dislocation distribution using the HR-EBSD method compared to the conventional approach. Two extreme examples of deformation conditions were investigated to show the efficacy of HR-EBSD in identifying dislocations and subtle features. The direct correlation between slip bands and HR-EBSD estimated GNDs is also presented, enhancing the scope of this approach in identifying individual slip bands.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wenshan Guo, Hui Zhang, Qingjun Zhou, Guangchun Xiao, Ning Guo, Wei Zhao, Gang Wang
Summary: The microstructures and corrosion resistance of TC11 components were significantly improved using a high-power, high-speed laser metal deposition (LMD) process and subsequent post-heat treatment, with greater improvements observed in the deposition direction. The significant improvement of corrosion resistance in the deposition direction is mainly due to the weakening of the charged galvanic corrosion effect between the non-interlayer zone and interlayer zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Xu, Rui Cao, Junheng Gao, Yu Zhang, Haitao Zhao, Shuize Wang, Yuhe Huang, Guilin Wu, Honghui Wu, Chaolei Zhang, Xinping Mao
Summary: In this study, the microstructures and mechanical properties of interphase precipitation strengthening micro-alloyed steels were investigated. The addition of Cr was found to increase the yield strength without significant decrease of ductility. Thermodynamics analysis revealed that the addition of Cr led to grain refinement and decrease of sheet spacing of nanoprecipitates. Calculations showed that the decrease of interphase-precipitated carbides sheet spacing and the refinement of grain size were responsible for the strength enhancement of Cr microalloyed steel.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxin Zhong, Biao Zhang, Yuhan Ren, Jian Ye, Jiawei Zhang, Feng Ye
Summary: In this study, bioinspired web-liked multiphase composites were successfully constructed using boron-modified polysilazane polymer. The composites consisted of long TiB nanowires as 'web' and hybrid TiC and Ti3Si particles as 'nodes'. The enhanced strength of these composites was attributed to the synergistic load transfer of the hybrid reinforcements. This study provides a promising design approach for developing high-performance composites with high reinforcement content, utilizing polymer instead of traditional ceramic powder.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Geng Liu, Linran Yu, Jie Su, Ran Ding, Min Xiong, Qi Gao
Summary: In this study, a flash austenitization heat treatment approach was used to achieve a dual-phase microstructure consisting of retained austenite and fine-grained ferrite in low-carbon TRIP steel. Phase-field simulations revealed the acceleration of ferrite transition kinetics in the Mn-depleted region and the influence of chemical heterogeneity of C and Mn on the stabilization of austenite.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhichao Yang, Dehui Zheng, Zhen Wang, Tingbin Liang, Shuangbao Wang
Summary: In this study, the configurations, formation process, and properties of the Cu-rich layer formed during TJE of Al alloys were revealed using aberration-corrected scanning TEM (STEM), STEM image simulations, and first-principles calculations. The results showed a new orientation relationship between the Cu-rich layer and Al matrix, and provided insights into the formation mechanisms of the Cu-rich layer and Cu diffusion zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Chen, Ruyu Tian, Jiayue Wen, Yanhong Tian
Summary: In this study, the interfacial microstructure evolution and reliability of Cu/Sn-3.0Ag-0.5Cu (SAC305)/Ni and Cu/Sn-3.0Ag-0.5Cu-0.05TiO2 (SAC305-0.05TiO2)/Ni interconnections under thermal shock were investigated. The results showed that the addition of TiO2 nanoparticles can suppress the growth of interfacial IMCs and improve the reliability of the connections.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Yunbin Lu, Yangju Feng, Wei Wang, Wenke Wang, Jianlei Yang, Wenzhen Chen, Guorong Cui, Dongdong Zhuang, Hongyang Cao
Summary: In order to improve the wear resistance of titanium alloy, titanium matrix composites with network distributed TiBw were fabricated. The results showed that the wear rate of the composites decreased by 17.2% at room temperature and 38.4% at high temperature compared to the TA15 alloy. The TiBw in the composites enhanced work hardening, improved thermal conductivity, and effectively hindered dislocation movement and promoted dynamic recrystallization during high-temperature wear.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jubert Pasco, Lu Jiang, Thomas Dorin, Ali Keshavarzkermani, Youliang He, Clodualdo Aranas Jr
Summary: The unique structure and solute distribution of CoCrMo alloys produced using Laser Powder Bed Fusion technique require custom heat-treating processes to achieve the targeted phase distribution and mechanical properties. This study investigates the phase transformation behavior and precipitate distribution of CoCrMo samples after aging heat treatment. The results show differences in phase fraction and nucleation sites between directly aged and solution heat-treated samples.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zipeng Ma, Meng Zhou, Baohong Tian, Yi Zhang, Heng Li, Xu Li, Jin Zou, Haoyan Hu, Ke Jing, Yong Liu, Alex A. Volinsky
Summary: In this study, two electrical contact composites were prepared using the vacuum hot pressing sintering endo-oxidation method. The addition of Y2O3 had no negative effects on the electrical conductivity and hardness of the composites. Moreover, it reduced the welding force and arc energy, and improved the stability of the contacts.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wei Sun, Ning Cui, Shuling Zhang, Tiewei Xu, Xiaopeng Wang, Fantao Kong
Summary: A laminated composite was successfully fabricated and its microstructure and mechanical properties were investigated. The composite exhibited high bonding strength, improved flexural strength and fracture toughness, and superior tensile properties compared to the monolithic alloy.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zih-You Wu, Yin-Ku Lee, Su-Yueh Tsai, Po-Yu Chen, Jenq-Gong Duh
Summary: With the development of the artificial intelligence (AI) industries, electronic packaging is advancing towards high density, high efficiency, and multi-functionality. The application of microbumps is necessary to achieve high density and small-scale interconnection. In this study, three types of full intermetallic compounds (IMCs) bumps were fabricated, and the mechanical and thermal properties of IMCs were analyzed. The results showed that the full IMCs bumps with added Ni and Zn exhibited consistent structure and excellent thermal stability, providing a reliable microstructure for application.
MATERIALS CHARACTERIZATION
(2024)
