Article
Chemistry, Physical
Hueseyin Zengin, Soner Ari, Muhammet Emre Turan, Achim Walter Hassel
Summary: The Mg-2.2Gd-2.2Zn-0.2Ca alloy was cast through permanent mold casting and then subjected to homogenization and extrusion at different temperatures. The microstructure of the alloy showed the presence of alpha-Mg, Mg-Gd, and Mg-Gd-Zn intermetallic phases. The extrusion process resulted in refinement of alpha-Mg grains due to dynamic recrystallization, and higher basal texture intensities were observed at lower extrusion temperatures. The mechanical properties were improved after extrusion, but strength decreased with increasing extrusion temperature. Homogenization reduced the corrosion resistance of the as-cast alloy, while extrusion enhanced corrosion resistance.
Article
Nanoscience & Nanotechnology
Jianyue Zhang, Peng Peng, Alan A. Luo, Jia She, Aitao Tang, Fusheng Pan
Summary: Dynamic precipitation and grain refinement occurred during low temperature extrusion of ZK60 alloy, leading to improved mechanical properties such as tensile strength and elongation. The presence of dynamic precipitates promoted nucleation of new grains and enhanced the alloy's strength and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(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
Heshuai Yu, Hongbao Cui, Zhengpeng Yang, Zhichao Xu
Summary: This study discusses the effect of extrusion temperatures on the microstructure, second phases particle, texture, and mechanical properties of the Mg-5Sn -1Si-0.6Ca alloy. The results show that decreasing the extrusion temperature benefits dynamic precipitation and grain refinement. The strength and plasticity of the alloy are simultaneously improved by the method of solid solution + lowtemperature extrusion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Dong Hee Lee, Sang-Hoon Kim, Hyun Ji Kim, Byoung Gi Moon, Young Min Kim, Sung Hyuk Park
Summary: The extrusion speed has a significant impact on the microstructure and tensile properties of the AZXWMM91100 alloy. As the extrusion speed increases, the grain size gradually increases, leading to a decrease in tensile strength and a fluctuation in elongation.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Yu-Ying He, Sheng-Wen Bai, Gang Fang
Summary: In this study, the dynamic recrystallization (DRX) behavior of a Mg-Al-Zn-RE alloy with abundant second-phase particles during hot extrusion is investigated using a combination of finite element (FE) and cellular automaton (CA) models. The results show that the extrusion conditions have a significant influence on the microstructural evolution of the magnesium alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Hao Chen, Jianwei Tang, Weiwei Gong, Yunpeng Gao, Feng Tian, Liang Chen
Summary: Different annealing temperatures and holding times were found to have significant effects on the microstructure and corrosion rate of hot rolled AZ31 Mg sheets. Annealing at a high temperature of 450 degrees C and a long holding time of 5 hours effectively reduced the corrosion rate by increasing grain size and decreasing the presence of dislocations, twins, and second phase particles.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
Dong Hee Lee, Ye Jin Kim, Sang-Hoon Kim, Byoung Gi Moon, Sung Hyuk Park
Summary: This study systematically analyzes the extrusion behavior, microstructure, and tensile properties of an AZXWMM91100 alloy with high corrosion resistance, ignition resistance, and extrudability. The extrusion limit diagram is established to provide a safe processing zone, and it is found that the materials within this zone have good surface quality and tensile ductility.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
B. Sulkowski, R. Chulist
Summary: The effect of texture on alloy properties and the evolution of texture during hot extrusion of Mg were studied through experiments and simulations. A model based on a viscoplastic formulation was extended to a cellular automaton procedure to consider recrystallization mechanisms. The main textural components were identified for each deformation temperature and a mechanism for their formation was proposed.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Yuzhao Xu, Jingyuan Li, Mingfan Qi, Wenhui Guo, Yue Deng
Summary: This study investigated the influence of extrusion temperature on the microstructure, mechanical properties, and corrosion behavior of ZGMS alloy. The results showed that lower extrusion temperature led to refined grain size and improved mechanical properties. The alloy exhibited excellent mechanical properties and low corrosion rate after extrusion at 360 degrees Celsius.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Zhirou Zhang, Qinghuan Huo, Zhenyu Xiao, Yuxiu Zhang, Aki Hashimoto, Xuyue Yang
Summary: The study proposed a practical method for optimizing the mechanical properties of Mg-4Y-2Nd-0.2Zn-0.5Zr alloy by combining interrupted compression with intermediate annealing, resulting in the formation of deformation bands triggered by the intermediate annealing and a higher volume fraction of ultra-fine grains in the final IC sample compared to the CC sample.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Jae Won Cha, Sung Hyuk Park
Summary: This study investigates the effects of extrusion temperature on the dynamic recrystallization behavior of a Mg-3Al-1Zn-0.3Mn alloy and the microstructural characteristics and mechanical properties of the extruded materials. The results show that increasing the extrusion temperature leads to a decrease in the recrystallized grain fraction and an increase in grain size and texture intensification. The tensile yield strength increases with increasing extrusion temperature, while the compressive yield strength decreases.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Shiqi Li, Qinghuan Huo, Sijia Hu, Chunyu Wang, Zhirou Zhang, Yuxiu Zhang, Tao Chen, Xuyue Yang
Summary: The effects of original orientations on the dynamic recrystallization behaviors of a hot-rolled Mg-1.0wt% Ca plate were investigated. It was found that dynamic recrystallization occurred more easily in the normal direction sample at the same temperature. As the temperature increased, the area fraction and size of the dynamic recrystallized grains improved faster in the rolling direction sample. The Mg-1.0wt%Ca alloy significantly postponed both the continuous and discontinuous dynamic recrystallization processes compared to commercial Mg alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Hassan Jafari, Amir Houshang Mojiri Tehrani, Mojiri Tehrani, Mahsa Heydari
Summary: The study found that extrusion temperature and ratio have significant effects on the microstructure, hardness, compression, and corrosion behavior of Mg-5Zn-1.5Y alloy. Lower temperature and higher ratio extrusion conditions provided higher compressive strengths, and the extrusion process decreased the corrosion rate of the alloy in simulated body fluid significantly. Extrusion temperature had a more pronounced effect on corrosion resistance compared to the extrusion ratio, with higher temperatures resulting in higher corrosion resistance.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
Kai Guan, Rui Ma, Jinghuai Zhang, Ruizhi Wu, Qiang Yang, Jian Meng
Summary: The microstructure and tensile properties of a Mg-Sm-Zn-Zr alloy with various extrusion ratios were systematically investigated. It was found that a greater extrusion ratio led to increased dynamic recrystallization and weakened basal fiber texture, resulting in decreased strength but improved ductility. Additionally, TEM observations revealed the transformation of the dominant intermetallic phase during extrusion with high extrusion ratio.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
Tingzhuang Han, Guangsheng Huang, Heng Li, Lifei Wang, Hua Zhang, Fusheng Pan
Summary: This study investigates the accumulated extrusion bonding (AEB) of AZ31 Mg alloy with a heterogeneous bimodal grain structure. The combination of local water cooling and artificial cooling during the process results in the consecutive development of the microstructure through discontinuous dynamic recrystallization (DDRX). The two-stage cooling approach enables the retention of fine DRXed grains and high-residual dislocation density unDRXed grains, leading to a good strength-ductility balance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Metallurgy & Metallurgical Engineering
Yi-hao Luo, Wei-li Cheng, Hui Yu, Hong-xia Wang, Xiao-feng Niu, Li-fei Wang, Hang Li, Zhi-yong You, Hua Hou
Summary: In this study, the creep properties and microstructural characteristics of Mg-5Bi-5Sn (BT55) alloy without and with Mn (BTM550) addition were compared. The results showed that adding Mn improved the creep performance of BTM550 alloy and affected the microstructural characteristics of the alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Metallurgy & Metallurgical Engineering
Yongqiao Li, Lifei Wang, Xiaohuan Pan, Qiang Zhang, Guangsheng Huang, Bin Xing, Weili Cheng, Hongxia Wang, Kwang Seon Shin
Summary: High-temperature pre-stretching technology was found to effectively enhance the formability of AZ31 Mg alloy sheets by increasing grain size and weakening texture.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Hua Chai, Lifei Wang, Xiaoqing Cao, Qiang Zhang, Srinivasan Arthanari, Huseung Lee, Guangsheng Huang, Bin Xing, Liuwei Zheng, Hua Zhang, Liwei Lu, Hongxia Wang
Summary: To improve the corrosion resistance of magnesium alloy, Ca-Ph coatings were prepared on AZ31 alloy substrates by chemical conversion. The morphologies, compositions, and properties of the coatings were adjusted by treatment time and temperature. The coatings demonstrated significant corrosion protection to the substrate in the simulated body fluid (SBF) solution. The results indicated that higher temperatures favored the presence of hydroxyapatite and that the coating thickness had an enhanced influence on the corrosion performance.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Amir Ijadi, Behzad Nayebi, Nader Parvin, Ali Kaflou
Summary: The study investigates the interfacial phenomena and their influence on the sintering behavior, microstructure, and mechanical properties of porous stainless steel 316L containing Sn additive. The sintering process was carried out at different temperatures (1250°C and 1300°C) under a nitrogen atmosphere. It was found that the presence of Sn improved atomic diffusion through liquid phase sintering, but negatively affected neck formation. The best combination of mechanical properties was achieved in the samples containing 2 wt% Sn. Fracture investigations, phase analysis, and EDS elemental analysis were conducted to discuss the obtained mechanical properties and compressive strength of the samples.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Fei-er Shangguan, Wei-li Cheng, Yu-hang Chen, Hui Yu, Li-fei Wang, Hang Li, Hong-xia Wang, Jin-hui Wang
Summary: In this study, the influence of grain structures on the electrochemical behaviors and discharge performances of extruded Mg-0.3Bi-0.3Ag-0.3In alloys with different extrusion ratios (ER) is investigated. It is found that the fine-equiaxed grain structure in the ER36 anode contributes to the increase of anode dissolution kinetics and the formation of loose and thin discharge products layer, resulting in a higher and steadier cell voltage. The ER36 alloy shows great potential as an anode material for primary Mg-air batteries with high cell voltage, considerable anodic efficiency, and specific energy.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Ming-ya Zhang, Feng Li, Zhen-yu Guo, Hong-xia Wang, Li-fei Wang, Hang Li, Hui Yu, Wei-li Cheng
Summary: A novel low-alloyed Mg-1Bi-1Zn-1Ag alloy system with a bimodal grain structure was developed through extrusion at different extrusion ratios. The effects of grain structure on corrosion behavior and tensile properties were analyzed. The sample obtained at the extrusion ratio of 9 (BZQ111-R9) exhibited a bimodal grain microstructure and showed filiform corrosion with intergranular corrosion at a low corrosion rate of 0.06 mm/a. The BZQ111-R9 sample achieved an improved synergy between strength (tensile yield strength of 207.1 MPa) and ductility (elongation of 35.9%). Therefore, this proposed approach can develop low-alloyed Mg-Bi-based alloys with excellent synergy between corrosion resistance and tensile properties based on bimodal grain structure control.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Caihong Hou, Fugang Qi, Lifei Wang, Liwei Lu, Nie Zhao, Jia She, Yun Zhou, Xiaoping Ouyang
Summary: The effects of Ca addition on the microstructure and mechanical properties of Mg-Zn-Sn-Mn alloys were investigated. With increasing Ca content, the eutectic phase and grains were refined, and the morphologies of the CaMgSn phases changed. Small amounts of Ca can improve properties at room temperature. However, increasing Ca content results in the deterioration of alloy properties. A small amount of Ca can improve the high-temperature plasticity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Kwang Seon Shin, Lifei Wang, Mingzhe Bian, Shihoon Choi, Alexander Komissarov, Viacheslav Bazhenov
Summary: Temperature has a significant influence on the critical resolved shear stress (CRSS) of slips and twinning in Mg single crystals. Non-basal slip occurs in the temperature range of 613 to 733 K when the single crystal samples are stretched along the <01<($)over bar> 10 > direction, while basal slip and prismatic slip are mainly activated from room temperature to 733 K when the tensile directions are inclined at an angle of 45 degrees with the basal and the prismatic plane, respectively. CRSSs of different deformation modes show different temperature dependence.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
Pengbin Lu, Lifei Wang, Xiaohuan Pan, Guangsheng Huang, Qiang Zhang, Hua Zhang, Liuwei Zheng, Liwei Lu, Hongxia Wang, Shuyong Jiang, Kwang Seon Shin
Summary: The study investigates the mechanisms of ductility enhancement in AZ31 magnesium alloy using the concept of shear strain-assisted twin orientation regulation (SATOR). Simple shear strain is applied to pre-twinned samples to rotate the twin orientation. The results show that the fracture strain of SATORed samples with the greatest improvement in ductility was 1.5 times higher than that of the original material. Overall, shear-deformed samples exhibit a bimodal fine-grained structure. The improved ductility is attributed to the regulation of initial twin orientation, promoted basal slip activity, and bimodal fine-grained structure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ming-ya Zhang, Yi-hao Luo, Hui Yu, Hong-xia Wang, Xiao-feng Niu, Li-fei Wang, Hang Li, Wei-li Cheng
Summary: A novel rare-earth element-free Mg-Bi-Sn-Mn alloy system was developed to overcome the limitations of Mg alloys and avoid the use of rare-earth elements. The creep properties of a peak-aged Mg-5Bi-5Sn-0.5Mn alloy were investigated, and the results showed unexpected deterioration due to changes in the orientation relationships of precipitates. Both submicron Mg2Sn and Mg3Bi2 precipitates have equivalent effects on the deterioration of creep properties, which is controlled by cross-slip.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Guo-lei Liu, Wei-li Cheng, Lin Luo, Hui Yu, Li-fei Wang, Hang Li, Hong-xia Wang, Jin-hui Wang
Summary: In this study, the dynamic recrystallization (DRX) mechanism and hot-deformation behavior of a novel precipitate-free Mge0.25Bie0.25Sn alloy were investigated. Processing maps and constitutive equations were constructed to predict the hot deformation behavior. The results showed that continuous dynamic recrystallization (CDRX), discontinuous dynamic recrystallization (DDRX), and a transformation of prismatic slip to pyramidal II slip occurred during hot compression.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Wen-ting Xu, Wei-li Cheng, Zhen-yu Guo, Hui Yu, Li-fei Wang, Hang Li, Hong-xia Wang, Jin-hui Wang, Shuai-ju Meng
Summary: This study systematically explores the role of microstructure in tailoring the mechanical properties and corrosion behaviors of as-rolled dilute Mg-Bi binary alloys. It is found that the addition of Mg3Bi2 nanoprecipitates along the grain boundaries leads to superior strength, ductility, and anticorrosion synergy. The activation of prismatic and/ or pyramidal slip systems also contributes to the achieved strength-ductility synergy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Guo -lei Liu, Zhi-yong You, Wei -li Cheng, Lin Luo, Hui Yu, Li -fei Wang, Hang Li, Ze-qin Cui, Jin -hui Wang
Summary: This study investigates the dynamic recrystallization mechanism and hot deformation behavior of the Mg-0.5Bi-0.5Sn-0.5Mn alloy. The results show a strong correlation and suggest that cross-slip is the primary deformation mechanism. The processing maps indicate the most suitable processing conditions, and the occurrence of continuous and discontinuous dynamic recrystallization under different deformation conditions is observed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhipeng Ge, Lifei Wang, Jianzhong He, Hongxia Wang, Jia She, Xiaoye Zhou, Liuwei Zheng, Kwang Seon Shin
Summary: This study investigates the microstructure, texture, and mechanical properties of Mg-4Zn-1Mn-xCa (x = 0, 0.2, 0.5, wt%) alloys. The results show that the microstructure of Mg-4Zn-1Mn-xCa alloys becomes finer with the addition of trace Ca, resulting in a significant basal texture. The addition of 0.2Ca enhances the yield strength (YS) by 30.3% and improves the corrosion resistance. Micro-tubes of Mg alloy with 0.2Ca addition are successfully produced, demonstrating the feasibility of fabricating a biodegradable Mg stent using this alloy billet.
JOURNAL OF MATERIALS SCIENCE
(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)
