Article
Chemistry, Physical
Chen Li, Qingshan Zhou, Mengnan Han, Shaohui Sha, Yuntian Luo, Xiaojing Xu
Summary: This study investigated the microstructure and mechanical properties of an Al-11Zn-3.1Mg-1.2Cu-0.2Zr-0.16Ti alloy with different Er contents. The inclusion of Er increased the density and volume fraction of L12-Al3(Er, Zr), which reduced re-crystallization tendency and improved grain refinement. However, excessive Er led to the formation of coarse intermetallic compounds and deterioration of mechanical properties. The alloy with 0.15 wt.% Er showed optimal mechanical properties, with a yield strength of 771.7 MPa, ultimate tensile strength of 785.9 MPa, and elongation of 9.5%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Rui Zhao, Qiangqiang Ma, Longlong Zhang, Jiaxin Zhang, Chunxiang Xu, Yuan Wu, Jinshan Zhang
Summary: A novel high ductility Zn-1Mg alloy was fabricated by Zr micro-alloying and hot extrusion, showing improved strength and ductility compared to the traditional Zn-1Mg alloy. The strengthening-toughening mechanisms were systematically analyzed in this study.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
You Zhou, Tianxing Chang, Xuewei Fang, Ruikai Chen, Yefei Li, Ke Huang
Summary: A novel Sc/Zr/Ti/Er-modified 2219 aluminum alloy was designed and fabricated into wall-shaped components using wire-arc directed energy deposition (DED). The alloy exhibited a highly equiaxed fine grain structure due to heterogeneous nucleation promoted by primary Al3X dispersoids. Heat treatment was conducted to tailor the strength and thermal stability of the alloy. The additional homogenization step before the T6 heat treatment helped to alleviate the anisotropy of ductility and improve the thermal stability.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Liangyu Li, Jiawei Tang, Zhengqin Liu, Yiren Wang, Yong Jiang, Gang Sha
Summary: The micro-alloying effects of Ni on the microstructure evolution and mechanical properties of an Al-Zn-Mg-Cu-Sc-Zr alloy were thoroughly investigated using electron/atom microscopic characterization and first-principles calculations. A trace addition of 0.2 wt% Ni can induce a new primary phase of Al3(Ni, Cu) and refine the grain size to 23 μm. It was found that Ni promotes the precipitation of the eta phase, improves its thermal stability, and enhances the GB binding by segregating to Al GBs. The Ni micro-alloyed Al-Zn-Mg-Cu-Sc-Zr alloys exhibit high strength and thermal stability with acceptable plasticity, even with a low Cu/Mg atomic ratio (approximately 0.22), compared to most 7055 Al alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Chaomin Zhang, Yong Jiang, Yanjun Zhou, Xiuhua Guo, Kexing Song
Summary: Interface structure modeling and first-principles calculations were performed to investigate the segregation behaviors of Zr micro-alloying element at nano-Cr particle interfaces and low-Sigma Cu grain boundaries in CueCreZr alloys. The results showed that Zr can substitute Cu atoms at nano-Cr interfaces with the Nishiyama-Wassermann orientation relation, but not at interfaces with the Kurdjumove-Sachs orientation relation. Zr segregation at low-Sigma grain boundaries greatly improved the binding strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Teng-teng Sun, Ji-wei Geng, Ze-yu Bian, Yi Wu, Ming-liang Wang, Dong Chen, Nai-heng Ma, Hao-wei Wang
Summary: The high temperature stability and mechanical properties of Al-5%Cu (AC) and Al-5%Cu-0.2%Mn-0.2Zr% (ACMZ) alloys were studied. The results showed that the addition of Zr and Mn elements significantly stabilized the main strengthening precipitates at high temperatures. The HT tensile test demonstrated that the ACMZ alloy had much higher strength than the AC alloy after thermal exposure at 573K. The mechanisms of strength and ductility enhancement of the ACMZ alloy at high temperatures were discussed in detail.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Zhengjiang Gao, Teng Ma, Hui Li, Huan Yang, Wu Wei, Hui Huang, Zuoren Nie
Summary: Er-Zr-Sc modified Al-Mg alloy, manufactured by selective laser melting, offers excellent mechanical properties due to the formation of a desirable microstructure and the synergistic effects of multiple strengthening mechanisms.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Hasan Vafaeenezhad, Hamid Reza Shahverdi
Summary: This study investigates the impact of incorporating different amounts of V into an Al-0.06Sc-0.06Zr-0.18Si at% alloy on the behavior of nanoprecipitates and the creep resistance of the alloy. The findings show that the amount of V added affects the structure, kinetics, coarsening resistance, and creep resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yanwu Guo, Wu Wei, Wei Shi, Xiaorong Zhou, Shengping Wena, Xiaolan Wua, Kunyuan Gao, Dongyun Zhang, Peng Qi, Hui Huang, Zuoren Nie
Summary: This paper focuses on a high-strength Al-Mg-Mn-Er-Zr alloy suitable for additive manufacturing, which was developed by adding the cheap rare earth element Er. The microstructure and mechanical properties of the alloy have been characterized, showing high yield strength, tensile strength, and good elongation.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Laidong Yang, Quanan Li, Xiaoya Chen, Lipeng Yan
Summary: This study investigated the effect of the microalloying element Ce on the microstructure and tensile mechanical properties of a Mg-10Gd-0.5Zr alloy. The results showed that adding Ce refined the grain size and formed a eutectic phase. Additionally, Ce promoted age-hardening response and improved the characteristics of the strengthening phase. The addition of Ce significantly increased the yield strength and ultimate tensile strength of the alloy.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Shipeng Shu, Anthony De Luca, David C. Dunand, David N. Seidman
Summary: The addition of a small amount of slow-diffusing W to the alloy accelerates one type of precipitation but hinders another, leading to an increase in peak-microhardness during aging without improving coarsening and creep resistance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Michal Leibner, Martin Vlach, Veronika Kodetova, Hana Kudrnova, Jozef Vesely, Sebastien Zikmund, Jakub Cizek, Oksana Melikhova, Frantisek Lukac
Summary: The effect of cold-rolling and high-temperature aging on precipitation processes in an Al-Er-Zr alloy was investigated. Based on the results, the decomposition sequence of the supersaturated solid solution was proposed. Cold-rolling enhances the precipitation of Al3Er particles and accelerates the formation of the Zr-rich shell around the Er-rich core. The coherency strain-field around the precipitates is retained even after 4 hours of aging at 600℃.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Bin Lei, Zhihua Dong, Yan Yang, Bin Jiang, Ming Yuan, Huabao Yang, Qinghang Wang, Guangsheng Huang, Jiangfeng Song, Dingfei Zhang, Fusheng Pan
Summary: The microstructure and mechanical properties of designed Mg-4Gd-0.5Zr-xZn (x = 0, 0.2, 0.5, 1.0 and 1.5 wt%) alloys were investigated, with a focus on the effect of Zn. The results showed that the alloys exhibited exceptional ductility, with Mg-4Gd-0.5Zr-1.0Zn and Mg-4Gd-0.5Zr-1.5Zn alloys having the highest elongation to fracture. The good strength-ductility balance in the alloys was attributed to grain refinement, texture softening, and the precipitation of Zn-containing second phases.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Environmental
Lixiao Shen, Yan Li, Lin Zhang, Shunguan Zhu, Zhenxin Yi, Chenguang Zhu
Summary: Experiments were conducted on Al-Si alloy-thermites with different Si content (12 wt% and 20 wt%) to regulate the energy release process. The introduction of silicon significantly stabilized the combustion process and enhanced the heat release and ignition performance of Al-Si/CuO composites.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Optics
Laihege Jiang, Lin Shi, Yang Lu, Yunzhong Xiang, Chen Zhang, Ming Gao
Summary: Suppressing pores is a significant challenge in narrow gap laser welding of aluminum alloys. Through oscillating laser welding, the pores changed from being dense and linear at the weld center to being scattered and segregated on one side, eventually disappearing at higher oscillation frequencies. The stirring effect induced by laser oscillation needed to be stronger to capture the bubbles. The growth of columnar grains plays a crucial role in bubble interception effect.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
J. X. Fang, S. Y. Dong, Y. J. Wang, B. S. Xu, Z. H. Zhang, D. Xia, W. B. Ren, P. He
JOURNAL OF MANUFACTURING PROCESSES
(2017)
Article
Nanoscience & Nanotechnology
J. X. Fang, S. Y. Dong, S. B. Li, Y. J. Wang, B. S. Xu, J. Li, B. Li, Y. L. Jiang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Materials Science, Characterization & Testing
Bin Liu, Xiaoming Xue, Jiming Li, Ruifeng Li, Shiyun Dong, Jinxiang Fang
NONDESTRUCTIVE TESTING AND EVALUATION
(2019)
Article
Chemistry, Physical
J. X. Fang, S. B. Li, S. Y. Dong, Y. J. Wang, H. S. Huang, Y. L. Jiang, B. Liu
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Nanoscience & Nanotechnology
Y. L. Jiang, J. X. Fang, G. Z. Ma, H. L. Tian, D. B. Zhang, Y. Cao
Summary: Different post-treatment plans were conducted to study the microstructures and properties of a carbide-free bainite steel fabricated via laser powder deposition, with the aim of enhancing mechanical properties through improving microstructure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Manufacturing
J. X. Fang, G. Z. Ma, H. L. Tian, S. B. Li, H. S. Huang, Y. Liu, Y. L. Jiang, B. Liu
Summary: Bulk crack-free Fe-Cr-Ni-Mo-Si-B alloy with high hardness was fabricated using laser metal deposition. The study showed that PT strain could counteract thermal contraction strain, achieving crack-free formation of high-hardness materials.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Nanoscience & Nanotechnology
J. X. Fang, H. T. He, Y. J. Wang, J. X. Wang, D. B. Zhang, Y. Cao
Summary: This study investigated the defect evolution and fracture mechanism of a laser powder deposited Fe-30Mn-10Cr-10Co-3Ni alloy during uniaxial tensile tests using in-situ high-resolution computed microtomography (CT) and electron back-scattered diffraction (EBSD). It was found that pores were not the source of crack initiation, and cracks originated from long and straight grain boundaries with significant differences in Taylor factors. Surface wrinkling caused severe plastic damage and led to the propagation of surface and near-surface cracks. The understanding of these mechanisms provides a theoretical basis for enhancing the mechanical properties of similar alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
J. X. Fang, J. X. Wang, Y. J. Wang, H. T. He, D. B. Zhang, Y. Cao
Summary: A high-entropy alloy with inhomogeneous chemical composition was prepared using laser powder deposition, and its microstructure and properties were compared with a compositionally homogeneous alloy prepared via electric arc melting + hot forging. The results showed that the laser-deposited alloy had higher yield strength, tensile strength, and elongation, as well as better plasticity under high strain.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Mechanical
Bin Liu, Peng Fu, Jiayang Gu, Peng He, Jinxiang Fang, Lihong Dong
Summary: This paper discusses the effect of ultrasonic impact treatment (UIT) on stress of laser cladding coating and proposes a stress control method. Experimental observation and theoretical analysis reveal that the repetition rate of UIT and tensile load have an impact on stress distribution, and the change in magnetic domain orientation is the main reason.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Chemistry, Physical
Haotian He, Jiaxuan Wang, Yang Cao, Xiuye Yang, Geng Zhao, Wuhong Yang, Jinxiang Fang
Summary: This study investigates the effect of Re, C, and Re + C on the microstructure and mechanical properties of the NbTaW0.4 alloy. The addition of 4% Re has no significant effect on the alloy's microstructure and room temperature mechanical properties, but increases the yield strength by about 69% at 1450°C. The addition of 9.4% C or both 3.6% Re and 9.1% C refines the microstructure of the alloy and significantly improves its mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jiaxuan Wang, Jinxiang Fang, Haotian He, Jianguang Lu, Dabin Zhang, Yang Cao, Jianjun Lin, Yujiang Wang
Summary: A metastable titanium alloy of Ti-27 Nb-5Zr-2Cr (wt%) was fabricated and investigated in terms of its microstructures and mechanical properties. The alloy showed high strength but low plasticity due to the presence of the isothermal phase. Hot forging transformed the isothermal phase to beta phase and improved the plasticity significantly. Surface shot blasting further enhanced the strength and plasticity of the alloy by introducing gradient nanostructures and suppressing surface wrinkling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Ren Weibin, Zhou Jinyu, Chen Jufang, Chen Guoyan, Fang Jinxiang
RARE METAL MATERIALS AND ENGINEERING
(2018)
Article
Materials Science, Multidisciplinary
Ren Weibin, Dong Shiyun, Xu Binshi, Wang Yujiang, Fang Jinxiang, Gang Xiao
RARE METAL MATERIALS AND ENGINEERING
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Feng Xiangyi, Dong Shiyun, Fang Jinxiang, Yan Shixing, Xu Binshi, Pan Fusheng
AOPC 2017: LASER COMPONENTS, SYSTEMS, AND APPLICATIONS
(2017)
Article
Metallurgy & Metallurgical Engineering
Xu Binshi, Fang Jinxiang, Dong Shiyun, Liu Xiaoting, Yan Shixing, Song Chaoqun, Xa Dan
ACTA METALLURGICA SINICA
(2016)
