Article
Nanoscience & Nanotechnology
Dongdong Zhang, Hucheng Pan, Jingren Li, Dongsheng Xie, Deping Zhang, Chaojie Che, Jian Meng, Gaowu Qin
Summary: Ultrahigh strength is achieved in low-cost Mg-4Sm-0.6Zn-0.4Zr alloy by a traditional extrusion process, showing a bimodal microstructure with fine recrystallized grains, coarse hot-worked grains, and numerous nanoscale particles. This alloy has great potential in industrial applications due to its high strength and simple extrusion process.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Lianyang Chen, Tian Ye, Yongshuai Wang, Ding Zhou, Tao Suo, Qiong Deng, Feng Zhao, Qingyuan Wang
Summary: The study found that pre-twinning can effectively enhance the strength and ductility of magnesium alloy, while high twin density can improve its mechanical properties through twin-dislocation interaction. It was also concluded that high strain rate in cold dynamic extrusion is an effective method for preparing pre-twinning magnesium alloy with good mechanical properties.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Ruoyu Liu, Chu Wang, Bin Liu, Yong Liu, Peter K. Liaw, Bingfeng Wang
Summary: High-entropy alloys (HEAs) containing nanotwins demonstrate both high strength and excellent plasticity. This study investigates the instantaneous formation mechanism of nanotwins in a shear band in the hot-extruded FeCoNiCrMo0.2 HEA. The results show that the shear band consists of elongated sub-grains, nanotwins, and equiaxed grains, with nanotwins mainly existing in a lamellar form. The nanotwins in the shear band possess a high strength of about 1500 MPa and good plasticity, with a true strain reaching 3.6.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Xutao Wang, Tianxiang Li, Liang Wang, Ke Jin, Benpeng Wang, Yunkai Li, Shihai Sun, Yunfei Xue
Summary: Researchers have developed a novel lightweight TiZrVNbAl multicomponent intermetallic alloy with good combination of ambient ductility and high-temperature strength. This alloy consists of a multicomponent B2 intermetallic matrix and dispersed micro-scale orthorhombic-phase (O-phase) precipitates. The B2 intermetallic matrix can undergo plastic deformation through the mixture of planar and wavy slip of dislocations, while the O-phase deforms by producing dislocation and stacking faults. The O-phase can effectively contribute to strength by impeding dislocation motion at elevated temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Yu Fu, Wenlong Xiao, Junshuai Wang, Xinqing Zhao, Chaoli Ma
Summary: In this study, the evolution of an alpha + beta dual-phase structure with varying alpha phase fraction was systematically investigated in a Ti alloy through annealing at different temperatures. The mechanical properties and deformation mechanisms were also studied. The results showed that increasing the alpha phase enhanced the stability of the retained beta matrix and decreased the beta domain size. The deformation mechanisms changed with the increasing alpha phase, leading to changes in mechanical properties. A microstructure composed of ultrafine grained alpha + beta dual phase showed a good combination of low Young's modulus, high strength, and high ductility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Deping Zhang, Dongdong Zhang, Tao Xu, Shanrong Chen, Yaqin Zhang, Xinlin Li, Jinhui Zhang
Summary: A high strength low-alloyed Mg-0.8Zn-0.2Zr (wt.%) alloy was fabricated through conventional extrusion at low temperature, showing superior properties compared to most commercial alloys containing heavy alloying elements.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Yun Zhang, Chen Jiang, Quan Yang, Yongjun Zhang, Shiwei Tian, Yonggang Yang, Haitao Jiang
Summary: The deformation behavior in magnesium alloy is influenced by grain orientation. This study investigated the deformation behaviors in grains with different orientations in a TRC-ZA21 alloy. The results showed that the nano-mechanical properties were affected by grain orientation and grain boundary misorientation angle. Grain orientation played a key role in determining the deformation mechanism of grains in direct contact with the nano-indenter, while the grain boundary influenced the deformation behavior of grains indirectly in contact with the nano-indenter.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Ao Fu, Yuankui Cao, Zhonghao Xie, Jian Wang, Bin Liu
Summary: A novel non-equiatomic high entropy alloy (HEA) Al15.85Fe11.15Co32.11Cr10.76Ni30.13 was fabricated using a powder metallurgy method. The HEA exhibits a dual-phase microstructure consisting of face-centered-cubic (FCC) and body-center cubic (BCC) phases. It possesses high compressive yield strength, fracture strength, fracture strain, and strength at high temperature due to the uniform dispersion of L12 and B2 nanoprecipitates in the FCC and BCC phases, respectively. This finding provides guidance for the development of high-performance structural materials with a balance of strength and ductility for industrial applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Jingyu Jiang, Huiling Wang, Mengmeng Tong, Feng Jiang, Menghan Zhang
Summary: The tensile behavior of an Al-6.0 Mg-0.4Mn-0.25Sc-0.10Zr alloy was significantly improved at temperatures below freezing point. This improvement is due to the increase in dislocation density and the fraction of low angle boundary angles, resulting in enhanced resistance to dislocation movements and grain boundary strengthening effects. Additionally, cryogenic deformation inhibits dislocation cross-slip, alleviating local stress concentration and leading to a more uniform deformation. At lower temperatures, dislocations tend to accumulate in the grains, causing a change in fracture mechanism from transgranular to intergranular fracture. At -150 degrees C, the alloy exhibits apparent intergranular fracture characteristics.
MATERIALS CHARACTERIZATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Chen Wei, Zhang Huan, Mu Juan, Zhu Zhengwang, Zhang Haifeng, Wang Yandong
Summary: This study investigates the influence of microstructures and strain rates on the adiabatic shear behavior of TC4 alloys. The results show that the lamellar TC4 alloy exhibits the best dynamic mechanical properties. Additionally, the width of the shear band decreases with increasing shear strain rate.
ACTA METALLURGICA SINICA
(2022)
Article
Materials Science, Multidisciplinary
Xianzhe Zhong, Qingming Zhang, Mingzhen Ma, Jing Xie, Mingze Wu, Siyuan Ren, Yongming Yan
Summary: The development of aerospace and military defense sectors has increased the demand for metals with enhanced mechanical properties under extreme conditions. Eutectic high entropy alloys (EHEAs) offer potential applications in these fields due to their excellent mechanical performance and good castability. In this study, the dynamic compressive properties and microstructural characteristics of Al1.19Co2CrFeNi1.81 EHEA were investigated at room temperature and liquid nitrogen temperature. The EHEA exhibited high strength and plasticity, particularly at liquid nitrogen temperature and high strain rate.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Zibing An, Shengcheng Mao, Yinong Liu, Hao Zhou, Yadi Zhai, Zhiyong Tian, Cuixiu Liu, Ze Zhang, Xiaodong Han
Summary: This study investigated a multi-mechanism approach to enhancing the mechanical properties of a CoCrFeMnNi high-entropy alloy through non-equiatomic alloy design and processing. The alloy exhibited improved yield strength, tensile strength, and uniform elongation, as well as significantly increased toughness after rotationally accelerated shot peening treatment. The enhancement in strength was attributed to various strengthening mechanisms associated with the heterogeneous microstructure of the alloy. The occurrence of multiple deformation mechanisms contributed to achieving suitable strain hardening and ensuring steady plastic deformation for high toughness.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
T. Nakata, C. Xu, H. Yamato, L. Geng, S. Kamado
Summary: The addition of Al and Ca microelements can improve the mechanical properties of magnesium alloys, but Al addition can deteriorate corrosion resistance, while the single addition of Ca can help increase both tensile and compressive yield strengths and improve yield anisotropy. This property improvement was achieved without compromising corrosion resistance. A ViscoPlastic Self-Consistent simulation showed that the single Ca addition effectively enhanced the hardening of basal and prismatic slips, resulting in improved yield strength in both tension and compression.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Feng Zhao, Jinhong Xie, Yikun Zhu, Qiancheng Liu, Tian Ye, Lianyang Chen, Tao Suo, Kaixuan Wang, Tao Wang, Qingyuan Wang
Summary: Dynamic extrusion is a promising method to improve both strength and ductility in magnesium alloys by introducing high-density extension twins and dislocation structures. Annealing after dynamic extrusion enhances strain hardening and strength, with high-density twins promoting more dislocation nucleation and offering additional slip systems for improved ductility. This study suggests that increasing twin density through dynamic extrusion can enhance the mechanical properties of magnesium alloys efficiently.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Chenkun Xu, Shoukang Gao, Le Zhou, Zhi Wang, Feng Wang, Weihan Zhang, Ziqi Wei, Pingli Mao
Summary: A novel Mg-6Zn-1Cu-2Y-0.6Zr magnesium alloy was prepared using a hot extrusion shearing process, and its mechanical properties, microstructural evolution, and deformation mechanisms under dynamic compression were studied. The experimental results showed that factors such as grain refinement and grain boundary migration had significant effects on the alloy's performance.
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)