Age-hardening behavior of a single-crystal Cu-ti alloy

被引：25
作者：
Semboshi, S. [1 ,2 ]
Hinamoto, E. [2 ]
Iwase, A. [2 ]
机构：
[1] Tohoku Univ, Kansai Ctr, Inst Mat Res, Naka Ku, Sakai, Osaka 5998531, Japan
[2] Osaka Prefecture Univ, Dept Mat Sci, Naka Ku, Sakai, Osaka 5998531, Japan
来源：
MATERIALS LETTERS | 2014年 / 131卷
基金：
日本学术振兴会;
关键词：
Copper-titanium alloy; Single-crystal; Age-hardening; Microstructure; Precipitation; COPPER-TITANIUM ALLOYS; PRECIPITATION;
D O I：
10.1016/j.matlet.2014.05.128
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and hardness of a single-crystal Cu-4 mol% Ti alloy aged at 723 K are studied, and compared with those for conventional poly-crystal specimens. Only the metastable beta'-Cu4Ti precipitates are dispersed finely and grown continuously in grains without discontinuous transformation into the stable beta-Cu4Ti laminates as found in poly-crystal specimens, because of lack of grain boundaries. Hardness increases with aging and reaches a maximum at approximately 12 h, which is attributed to the fine dispersion of beta'-Cu4Ti. On further aging, hardness decreases more gradually in single-crystal specimens than in poly-crystal specimens. The gradual decrease in hardness for single-crystal specimens is due to the gradual growth of beta'-Cu4Ti. Conversely, the rapid decrease in the hardness of poly-crystal specimens is due to the discontinuous formation of coarse beta-Cu4Ti , that accompanies the consumption of fine beta'-Cu4Ti precipitates. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：90 / 93
页数：4
相关论文
共 50 条
  • [1] Effect of Dislocations on Spinodal Decomposition, Precipitation, and Age-hardening of Cu-Ti Alloy
    Sato, Shigeo
    Hasegawa, Akifumi
    Semboshi, Satoshi
    Wagatsuma, Kazuaki
    HIGH TEMPERATURE MATERIALS AND PROCESSES, 2015, 34 (02) : 123 - 130
  • [2] Effects of Natural Aging on Age-Hardening Behavior of Cu-Be-Co and Cu-Ti Alloys Severely Deformed by High-Pressure Torsion
    Hibino, M.
    Watanabe, C.
    Tsuji, Y.
    Monzen, R.
    Todaka, Y.
    Sato, W.
    MATERIALS TRANSACTIONS, 2017, 58 (10) : 1346 - 1350
  • [3] Effects of Natural Aging on Age-Hardening Behavior of Cu-Be-Co and Cu-Ti Alloys Processed by High-Pressure Torsion
    Watanabe, Chihiro
    Hibino, Masakazu
    Monzen, Ryoichi
    Ii, Seiichiro
    Tsuchiya, Koichi
    MATERIALS TRANSACTIONS, 2016, 57 (09) : 1471 - 1475
  • [4] The effect of phosphorus addition on the age-hardening of Cu-Ni-Ti alloy
    Zhang, Lina
    Zhao, Xiangqin
    Lai, Jiaqing
    Tian, Yihong
    Zhang, Jianbo
    MATERIALS RESEARCH EXPRESS, 2025, 12 (01)
  • [5] Influence of grain size and quenching rate on the age-hardening behavior of Cu-2%Be alloy
    Miki, M
    Tenma, A
    Ishikawa, S
    Ogino, Y
    MATERIALS TRANSACTIONS JIM, 1998, 39 (04): : 455 - 462
  • [6] The effects of Ti on the precipitation evolution and age-hardening behavior of Al-7Si-Mg alloy
    Wang, Yifan
    Lu, Yanli
    Xu, Jinhan
    Zhang, Shiyao
    Wu, Wei
    Chen, Zheng
    INTERMETALLICS, 2022, 148
  • [7] Surface hardening of age-hardenable Cu-Ti alloy by plasma carburization
    Semboshi, S.
    Iwase, Akihiro
    Takasugi, T.
    SURFACE & COATINGS TECHNOLOGY, 2015, 283 : 262 - 267
  • [8] Effect of Sc addition on the microstructures and age-hardening behavior of an Al-Cu-Mg-Ag alloy
    Bai, Song
    Yi, Xinlei
    Liu, Guanhua
    Liu, Zhiyi
    Wang, Jian
    Zhao, Juangang
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 756 : 258 - 267
  • [9] Age-hardening behavior of cast Al-Si base alloy
    Li, RX
    Li, RD
    Zhao, YH
    He, LZ
    Li, CX
    Guan, HR
    Hu, ZQ
    MATERIALS LETTERS, 2004, 58 (15) : 2096 - 2101
  • [10] Age-hardening behavior of a SiCw/A1-Li-Cu-Mg-Zr composite
    Dong, SL
    Mao, JF
    Yang, DZ
    Cui, Y
    Jiang, LT
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 327 (02): : 213 - 223
12345