Article
Nanoscience & Nanotechnology
J. P. Qu, S. P. Yue, W. S. Zhang, B. W. Dong, Y. J. Wang, J. C. Jie, T. M. Wang, T. J. Li
Summary: The study investigated the impact of Si content on the microstructure evolution and properties of CuCr0.8Zr0.12Six alloys through thermodynamic analysis and first-principles calculation, revealing a direct relationship between the Si content, mechanical properties, and the formation of Cr3Si. Experimentally, it was found that CuCr0.8Zr0.12Si0.05 exhibited the highest comprehensive properties with increased tensile strength, elongation, electrical conductivity, and hardness compared to other Si content levels within the range of 0 to 0.2 wt%.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Fan Zhang, Dongjin Shi, Ziyu He, Xiao Wang, Lu Li, Zhaolin Zhan, Zhentao Yuan
Summary: This study investigated the effect of heat treatment on the mechanical properties and microstructure of cast Al4.4Cu0.6Mn alloy. The results showed that the aging treatment time had an impact on the alloy's mechanical properties and microstructure. With increasing aging time, the tensile strength of the alloy increased gradually, and the size of precipitates also increased. The fracture mode was quasi-cleavage fracture.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nuclear Science & Technology
M. Hatakeyama, T. Yamamoto, K. Yasuda, S. Matsumura, K. Yasunaga, K. Sato
Summary: The sink strengths of precipitate/matrix interfaces in Cu alloys, especially Cr-rich precipitates, were investigated using high-voltage electron microscopy. The results showed that these interfaces serve as strong sinks for point defects.
NUCLEAR MATERIALS AND ENERGY
(2022)
Article
Chemistry, Physical
Jinshui Chen, Xiangpeng Xiao, Chengjun Guo, Dawei Yuan, Hao Huang, Bin Yang
Summary: Different thermo-mechanical treatment processes were studied on Cu-0.8Cr-0.1Zr alloy, and the optimal comprehensive performance was achieved through a three-stage drawing and thermal treatment. The morphology and distribution of the main phase can be regulated by solution treatment, thereby improving the strength of the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yuxia Ma, Huiqin Chen, Hui Li, Shue Dang
Summary: This study investigates the structure and properties of Cu-1.0% Cr-0.1% Zr alloy in a solid solution state through ageing treatments at different temperatures and holding times. The results show that the percentage and size of the precipitated Cr phase increase while the dislocation density decreases with increasing ageing temperature and holding time. Tensile strength and electrical conductivity exhibit a trend of increasing first and then decreasing.
Article
Materials Science, Multidisciplinary
Chengzhi Huang, Yanbin Jiang, Zixiao Wu, Meng Wang, Zhou Li, Zhu Xiao, Yanlin Jia, Huiwen Guo, Liye Niu
Summary: In this study, a Cu-1.0Cr-0.4Zn-0.1Zr-0.05Si alloy was designed and the effects of Zn and Si elements on its microstructure and high-temperature mechanical properties were investigated. The results showed that the addition of Zn and Si elements improved the high-temperature strength and resistance to softening of the alloy.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Bowen Ma, Bailing An, Xue Zhao, Yunchao Li, Jingwen Du, Engang Wang
Summary: Doping Sc can enhance the mechanical properties of Cu-Cr-Zr alloy while maintaining its electrical conductivity. The addition of Sc leads to the formation of a new intermetallic compound with Zr, which segregates at the grain boundary. The solution + rolling + aging process results in improved properties, including the formation of nanoscale precipitates and subgrains. The addition of Sc increases the ultimate tensile strength and hardness of the alloy without significant reduction in electrical conductivity, expanding its application range.
Article
Materials Science, Multidisciplinary
Zihao Cheng, Yongsheng Li, Shiyan Pan, Zhengwei Yan, Xiaoyuan Zhang, Huiyu Wang
Summary: Nanoscale Cu clusters and alpha ' phase affect the hardness and brittleness of Fe-Cr-based stainless steel. The separation of Cr-enriched nanoscale alpha ' phase with Cu shell in Fe-Cr-Al-Cu alloys was revealed by three-dimensional phase-field simulation. The influences of Cu content and temperature on the evolution kinetics and element distribution were clarified.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Liyuan Shan, Xueliang Wang, Yanli Chang, Yaping Wang
Summary: The limitations of the strengthening effects of Cr on Cu-Cr alloys due to low solid solubility of Cr in Cu phase have been addressed by enhancing the dispersion strengthening effect of the second phase Cr, using the levitation melting method. This novel strengthening mechanism has resulted in significant improvements in hardness and tribological properties of Cu-Cr alloys, demonstrating the potential to enhance mechanical performance.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Yihai Yang, Qian Lei, Huan Liu, Jianda Hong, Zhen Han, Qi An, Jimin Shan, Xi Chen, Haoran Xu, Zhu Xiao, Shen Gong
Summary: This study characterized the second phase particles in Cu-Cr-Nb alloys and uncovered their crystal structure, precipitation, phase transformation behavior, and orientation relationship. The findings are significant for developing high-performance Cu-Cr-Nb alloys.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Junqing Han, Yuying Wu, Kai Zhao, Sida Liu, Tong Gao, Xiangfa Liu
Summary: The effect of trace B on the properties and microstructure of Cu-Cr-Zr alloy was investigated in this work. It was found that B can accelerate the precipitation rate of Cr and promote the formation of coherent G.P zones in the alloy. In addition, the addition of trace B improves the hardness and electrical conductivity of the alloy, with 0.03wt% B showing the peak performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Chenying Shi, Muzhi Ma, Biaobiao Yang, Yuling Liu, Yushen Huang, Yong Du
Summary: In this study, the effect of Ti content on the microstructure, mechanical, and electrical properties of Cu-Cr-Zr alloys was investigated. The electrical conductivity decreased with increasing Ti content due to electron scattering. The higher hardness/strength was attributed to higher dislocation density and finer FCC-Cr precipitates. Thermodynamic and kinetic calculations showed that increasing Ti content facilitated the nucleation of FCC-Cr but hindered its growth process.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Shuwei Duan, Yumin Wang, Zhongli Liu, Fuqiang Guo, Kenji Matsuda, Yong Zou
Summary: This study focused on investigating the characteristics of grain boundary T1 precipitate in a rolled Al-Cu-Li alloy. It was found that the T1 phase with a multilayer structure will precipitate at the grain boundary after artificial aging, and it is nearly continuously distributed along grain boundaries in the pre-rolled samples. The habit plane of the intergranular T1 normally parallels a (111) plane of the matrix on one side of the grain boundary.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Kaushal Jha, Suman Neogy, Santosh Kumar, R. N. Singh, G. K. Dey
Summary: The study focused on ageing behavior of Cu-Cr-Zr alloy to determine peak ageing conditions and identify precipitates based on morphology, sizes, and distribution. The temperature dependent flow behavior was evaluated and the role of precipitates in strengthening and work hardening behavior of the alloy was examined through electron microscopy analysis.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yichang Wang, Lingfei Cao, Xiaodong Wu, Xiaomin Lin, Tianyu Yao, Liming Peng
Summary: In this study, the effects of minor Ti, Mn, Cr, Zr, and Er additions on cast Al-Zn-Mg-Cu alloys were investigated. The addition of Ti significantly refines the ingot grains, while Mn and Cr additions reduce impurities and form specific phases. The joint addition of Ti, Mn, Cr, Zr, and Er creates a bulk composite phase. The alloy with the joint addition of these elements exhibits the highest hardness due to collaborative strengthening effects.
MATERIALS CHARACTERIZATION
(2023)
