Stability of the metastable β'-Cu4Ti phase in Cu-Ti alloys: Role of the Ti content

被引：8
|
作者：
Liao, Yumin [1 ]
Guo, Chengjun [1 ]
Zhou, Chenyang [1 ]
Xie, Weibin [1 ]
Yang, Bin [1 ]
Wang, Hang [1 ]
机构：
[1] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Jiangxi, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2023年 / 203卷
关键词：
Cu-Ti alloy; First principles; Metastable phase; Electrical conductivity; 1ST-PRINCIPLES CALCULATIONS; MECHANICAL-PROPERTIES; BE-CO; PRECIPITATION; MICROSTRUCTURES; BEHAVIOR;
D O I：
10.1016/j.matchar.2023.113164
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The stability of the metastable & beta;'-Cu4Ti phase is a crucial factor for the electrical conductivity of Cu-Ti alloys. Determining the factors that influence the stability of the & beta;'-Cu4Ti phase and the relationship between the & beta;'-Cu4Ti phase and the electrical conductivity of Cu-Ti alloys is a prerequisite to improve their electrical con-ductivity. In this study, the stabilities of the & beta;'-Cu4Ti and & beta;-Cu4Ti phases were investigated by first-principles calculations combined with experimental characterization. When the Ti content of the & beta;'-Cu4Ti phase is greater than or equal to 19 at.%, its stability is lower than that of the & beta;-Cu4Ti phase, resulting in instability of the & beta;'-Cu4Ti phase and dissolution of Ti atoms back into the Cu matrix. This is the main reason why it is difficult to improve the electrical conductivity of Cu-Ti alloys when the & beta;'-Cu4Ti phase is the main strengthening precipitate.
引用
收藏
页数：8
相关论文
共 50 条
  • [41] Influence of Ti and Zr on the bond strength between carbon rod and Cu-Ti and/or Cu-Zr alloys
    Sebo, P
    Kavecky, S
    Stefánik, P
    Korb, G
    JOURNAL OF MATERIALS SCIENCE, 2000, 35 (02) : 503 - 507
  • [42] Displacements from Cu4Ti in a Cu-Ti single crystal using small-angle and diffuse X-ray scattering:: a synchrotron radiation study
    Lyon, O
    Servant, C
    Simon, JP
    JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2000, 33 (02): : 928 - 937
  • [43] Thermodynamics of Ti in Cu-Ti alloy investigated by the EMF method
    Wei, Pan
    Jie, Lian
    Materials Science and Engineering A, 1999, 269 (01): : 104 - 110
  • [44] A HREM STUDY OF THE CRYSTAL-STRUCTURE OF CU4TI
    ZHANG, JP
    YE, HQ
    KUO, KH
    AMELINCKX, S
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1985, 88 (02): : 475 - 482
  • [45] Assessment of the Atomic Mobilities in fcc Cu-Fe and Cu-Ti Alloys
    Wang, J.
    Leinenbach, C.
    Liu, L. B.
    Liu, H. S.
    Jin, Z. P.
    JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION, 2011, 32 (01) : 30 - 38
  • [46] Assessment of the Atomic Mobilities in fcc Cu-Fe and Cu-Ti Alloys
    J. Wang
    C. Leinenbach
    L. B. Liu
    H. S. Liu
    Z. P. Jin
    Journal of Phase Equilibria and Diffusion, 2011, 32 : 30 - 38
  • [47] Hardening induced by energetic electron beam for Cu-Ti alloys
    Ueyama, Daichi
    Semboshi, Satoshi
    Saitoh, Yuichi
    Ishikawa, Norito
    Nishida, Kenji
    Soneda, Naoki
    Hori, Fuminobu
    Iwase, Akihiro
    JAPANESE JOURNAL OF APPLIED PHYSICS, 2014, 53 (05)
  • [48] Suppression of discontinuous precipitation by Fe addition in Cu-Ti alloys
    Wang, Xu
    Xiao, Zhu
    Chen, Yu
    Li, Zhou
    RARE METALS, 2024,
  • [49] LOW-TEMPERATURE ANOMALIES IN THE PLASTICITY OF CU-TI ALLOYS
    MORIYA, T
    MURATA, Y
    MURASE, S
    YOSHIMURA, O
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1991, 60 (12) : 4154 - 4159
  • [50] HYDROGEN IN CU-TI AND NI-TI METALLIC GLASSES
    SPASSOV, T
    TZOLOVA, G
    CRYSTAL RESEARCH AND TECHNOLOGY, 1994, 29 (01) : 99 - 107
12345