Article
Chemistry, Physical
Xinxin Zhang, You Lv, Xiaorong Zhou, Teruo Hashimoto, Yanlong Ma
Summary: In this study, corrosion behavior of 2A97-T8 Al-Cu-Li alloy extrusion in 3.5 wt% NaCl solution was investigated using corrosion testing and electron microscopy. It was found that the corrosion behavior of the alloy is influenced by plastic deformation during alloy fabrication and precipitation of T-1 phase during T8 treatment. Localized corrosion primarily occurs within non-recrystallized regions of partially recrystallized alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Shuwei Duan, Fuqiang Guo, Yongang Zhang, Kai Chong, Seungwon Lee, Kenji Matsuda, Yong Zou
Summary: The anisotropy of the mechanical properties of Al-Cu-Li alloys has been a limitation in their further application. Previous research mainly focused on the anisotropic tensile properties, but this study also found significant hardness anisotropy evolution during artificial aging. The distribution of T-1 variants and fiber texture along different directions affects the hardness loading resistance, and the characteristics of precipitates play a key role in the anisotropic hardness evolution. Pre-stretching can help facilitate isotropic hardness evolution by changing the characteristics of T-1 phase precipitates.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Xuan Guo, S. H. Wen, H. J. Jiao, S. J. Wu
Summary: The weld joint of 2195-T8 Al-Li alloy was prepared by tungsten inert gas welding and subjected to solution plus single and double aging treatments. The microstructure and properties were analyzed. The results showed that aging treatment had little effect on the average grain size. Different phases were distributed in the weld zone and heat affected zone after single and double aging treatments. The weld's tensile strength increased and elongation decreased after double aging treatment due to the variation of the precipitates.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Shuwei Duan, Zhongli Liu, Fuqiang Guo, Yuzhe Pan, Kenji Matsuda, Yong Zou
Summary: The aging precipitation behavior and its effects on the mechanical properties of a novel cast Al-Cu-Li alloy were investigated. It was found that during artificial aging, various phases precipitate sequentially, with the T1 phase and cubic phase showing excellent thermal stability. After aging, the alloy's tensile strength increases to 423 MPa, but the elongation decreases significantly.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Guohua Wu, Xiaolong Zhang, Liang Zhang, Yixiao Wang, Chunchang Shi, Peisen Li, Guangxiao Ren, Wenjiang Ding
Summary: This study investigated the microstructural evolution, coarsening kinetics of main precipitates, and related mechanical characteristics of a newly-developed cast Al-Li-Cu-Mg-X alloy during aging at different temperatures. The increasing aging temperature led to significantly enhanced coarsening rate of the delta' phase, resulting in a decrease in strength. The best combination of strength and ductility was achieved in the alloy aged at 175 degrees C for 32 hours.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
C. H. Wu, H. Li, T. J. Bian, C. Lei, L. W. Zhang
Summary: This study deepy explored the natural aging behaviors and underlying mechanism of the 2195 Al-Cu-Li alloy. Results indicate that the alloy exhibits a strong response in the early stage of natural aging, with the tensile strength rapidly increasing after 4 hours and reaching a plateau after 24 hours. The contribution of solute atoms, delta'/beta' precipitates, and GP zones to strength in the natural aging state is similar, at around 161 MPa, 80 MPa, and 141 MPa, respectively.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Mechanical
Yajun Chen, Fanqi Kong, Jinchuan Yang, Xianjie Song, Xianming Meng
Summary: A self-designed in-situ corrosion-fatigue test platform was developed for evaluating the fatigue performance and failure mechanism of 2198-T8 Al-Li alloy under different conditions. The results showed that the length and width of the crack tip plastic zone decreased with the increase of concentration under CF-I conditions. A competing mechanism of corrosion and fatigue under in-situ corrosion fatigue was proposed.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Ju Kang, Mingyu Si, Jiajian Wang, Li Zhou, Xiangdong Jiao, Aiping Wu
Summary: The FSW repair technique was used to repair the cavity defects in the single-pass FSW of 2219-T8 aluminum alloy. The evolution of precipitates and its effect on the mechanical and corrosive properties of the repaired joint were studied. The repair welding successfully eliminated the void defects, but led to a larger precipitate-free zone and more severe intergranular corrosion.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Z. L. Wang, B. B. Wang, Z. Zhang, P. Xue, F. C. Liu, D. R. Ni, B. L. Xiao, Z. Y. Ma
Summary: This study aims to find an optimized welding parameter for friction stir welding (FSW) of 2195-T8 Al alloy plates with a thickness of 6 mm. The tensile strength of approximately 422 MPa was achieved at a relatively high welding speed of 400 mm/min with a tool rotational speed of 800 rpm, which was comparable to that of joints with low welding speeds. The combination of moderate tool rotational speed and moderate welding speed was found to be a feasible optimizing direction for FSW of Al-Li alloy with medium thickness.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2023)
Article
Materials Science, Multidisciplinary
Hao Feng, Yulin Chen, Hongshan Yang, Ping Yang, Jian Zhang, Baipo Shu
Summary: The effects of different aging treatments on an Al-Cu-Mg-Li alloy were investigated. Double aging treatment improved the strength, hardness, and corrosion resistance of the alloy but decreased its elongation. The corrosion morphology and fracture morphology changed with the aging process. Transmission electron microscopy results showed differences in the T1 phase between different aging states. The optimal process for the Al-Li alloy was determined to be pre-aging at 100°C for 4 hours and final aging at 160°C for 24 hours.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Hyongjoon Lee, Hobyung Chae, You Sub Kim, Min Ji Song, Sangyeob Lim, Kali Prasad, Hariharan Krishnaswamy, Jayant Jain, Ke An, Soo Yeol Lee
Summary: The study found that AA7075 alloy in different heat treatment states exhibits different behaviors during stress relaxation, with alloys in peak-aged condition showing the highest stress drop and plastic strain change. As stress relaxation cycles repeated, the decrease in activity of mobile dislocations led to a decrease in stress drop, and the relationship between grain orientation hardness and lattice strain affected the stress relaxation effect.
MECHANICS OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
C. H. Wu, H. Li, C. Lei, D. Zhang, T. J. Bian, L. W. Zhang
Summary: This study focuses on the effect of creep aging temperatures and stresses on the anisotropic creep aging behaviors of the 2195 Al-Cu-Li alloy. The findings show that increasing temperature and stress lead to a decrease in in planar anisotropy (IPA) value of creep deformation and strength. The study also reveals the important role of initial texture and precipitation in mitigating anisotropic creep aging behavior.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Ding-ding Lu, Jin-feng Li, Hong Ning, Peng-cheng Ma, Yong-lai Chen, Xu-hu Zhang, Kai Zhang, Jian-mei Li, Rui-feng Zhang
Summary: The microstructure evolution of 2050 Al-Li alloy thick plate significantly affects its tensile properties, with secondary phases, precipitates, and textures varying depending on thickness location. Precipitation strengthening has a stronger influence along the rolling direction than the transverse direction, while the M-value has limited changes at different thickness layers.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Chemistry, Physical
Yingkai Shao, Xiaoyan Li, Li Chen, Enguang He
Summary: In this study, the concept of fine equiaxed band (FEQB) was proposed for the first time, and the distribution range of the fine equiaxed zone (FEQZ) was redefined. By analyzing microstructures, orientations, micro-segregations, and precipitates, the study identified the detailed morphology and component distribution within the grain of the FEQZ.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Metallurgy & Metallurgical Engineering
Yi He, Hai-hui Xi, Wen-quan Ming, Qin-qin Shao, Ruo-han Shen, Yu-xiang Lai, Cui-lan Wu, Jiang-hua Chen
Summary: The research showed that Er has an impact on the thermal stability and precipitation behavior of the Al-Si-Mg alloy, resulting in smaller average size of precipitates. When natural aging is combined with artificial aging, similar mechanical properties are observed in the alloy.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Multidisciplinary
Jia-lei Huang, Jin-feng Li, Dan-yang Liu, Rui-feng Zhang, Yong-lai Chen, Xu-hu Zhang, Peng-cheng Ma, Rajeev Kumar Gupta, Nick. Birbilis
Article
Materials Science, Multidisciplinary
Jin-Feng Li, Dan-Yang Liu, Hong Ning, Cheng Liu, Peng-Cheng Ma, Yong-Lai Chen, Xu-Hu Zhang
MATERIALS CHARACTERIZATION
(2018)
Article
Materials Science, Multidisciplinary
D. Y. Liu, J. F. Li, Y. L. Ma, R. K. Gupta, N. Birbilis, R. Zhang
Article
Materials Science, Multidisciplinary
Dan-yang Liu, Feng-jian Sang, Jin-feng Li, Nick Birbilis, Zhi-xiu Wang, Yun-long Ma, Rui-feng Zhang
MATERIALS CHARACTERIZATION
(2019)
Article
Materials Science, Multidisciplinary
Dan-yang Liu, Yun-long Ma, Jin-feng Li, Cheng Huang, Yang Wang, Zhi-xiu Wang, Rui-feng Zhang
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Materials Science, Multidisciplinary
Y. C. Lin, Qiao Wu, Dao-Guang He, Xu-Hao Zhu, Dan-yang Liu, Xin-He Li
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Metallurgy & Metallurgical Engineering
Dan-Yang Liu, Jin-Feng Li, Yong-Cheng Lin, Peng-Cheng Ma, Yong-Lai Chen, Xu-Hu Zhang, Rui-Feng Zhang
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2020)
Article
Materials Science, Multidisciplinary
Tian-Le Liu, Jin-Feng Li, Dan-Yang Liu, Yun-Long Ma
Article
Multidisciplinary Sciences
Danyang Liu, Li Yang, Zanyu Chen, Guoqiang Zou, Hongshuai Hou, Jiugang Hu, Xiaobo Ji
Article
Materials Science, Multidisciplinary
Dan-yang Liu, Yun-long Ma, Jin-feng Li, Rui-feng Zhang, Hideaki Iwaoka, Shoichi Hirosawa
MATERIALS CHARACTERIZATION
(2020)
Article
Materials Science, Multidisciplinary
Dan-yang Liu, Jie-xia Wang, Jin-feng Li, Yun-long Ma, Kai Zhang, Rui-feng Zhang
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Materials Science, Multidisciplinary
Dan-yang Liu, Jin-feng Li, Tian-le Liu, Yun-long Ma, Hideaki Iwaoka, Shoichi Hirosawa, Kai Zhang, Rui-feng Zhang
MATERIALS CHARACTERIZATION
(2020)
Article
Materials Science, Multidisciplinary
Zhen-zhen Liu, Jin-feng Li, Dan-yang Liu, Yun-long Ma, Yue Du, Yong-lai Chen, Xu-hu Zhang, Rajeev Kumar Gupta, Xiaobo Chen, Rui-feng Zhang
Summary: The study investigated the influence of different Mg concentrations on the mechanical properties and microstructure of an Al-Li alloy, showing that high Mg content can retard the precipitation of the T-1 phase.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Review
Chemistry, Physical
Chang Gao, Xin Liu, Dong Zhao, Yiming Guo, Shaohua Chen, Fantao Gao, Tianle Liu, Zhenyang Cai, Danyang Liu, Jinfeng Li
Summary: This paper provides a detailed review of the progress in test methods and characterization approaches for aluminum alloy hardenability. The test methods include traditional end-quenching and modified methods, while the characterization approaches consist of various curves and theoretical derivation methods. Equipment for hardenability testing of different samples with varying properties and sizes is introduced, along with proposed improvements for the traditional testing process. Additionally, the influence of composition design on the hardenability of aluminum alloys is summarized, with the combined addition of micro-alloying elements being considered effective.
