In-situ synchrotron HEXRD study on the phase transformation mechanisms of the ω-related phases in a Ti4Al3Nb alloy

被引：2
|
作者：
Guo, Xiang [1 ,2 ]
Song, Lin [1 ,2 ,4 ]
Liu, Xu [1 ,2 ]
Stark, Andreas [3 ]
Pyczak, Florian [3 ]
Zhang, Tiebang [2 ,4 ]
机构：
[1] NPU Shanghai, Collaborat Innovat Ctr, Shanghai 201108, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[3] Helmholtz Zentrum Hereon, Inst Mat Phys, Max Planck Str 1, D-21502 Geesthacht, Germany
[4] Northwestern Polytech Univ, Chongqing Innovat Ctr, Chongqing 401135, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2023年 / 200卷
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
TiAl alloys; Ordered omega phase; In-situ synchrotron X-ray diffraction; Phase transformation; TIAL ALLOYS; BETA-PHASE; HIGH-NB; MICROSTRUCTURE; DECOMPOSITION; EVOLUTION; EXAMPLE;
D O I：
10.1016/j.matchar.2023.112901
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The omega-related phases in TiAl alloys have various structures and usually precipitate from the beta(o) phase. In the present study, the dissolution and precipitation of the omega ''/omega(o) phases in a Ti4Al3Nb alloy was investigated by means of in-situ synchrotron high energy X-ray diffraction. The results show that the." phase dissolves prior to the omega(o) phase during heating. During cooling, the omega(o) phase precipitates from beta(o) phase directly. Furthermore, the cooling rates significantly affect the precipitation temperatures of the omega-related phases. The morphology of the two phases was characterized by transmission electron microscopy. The distribution and size of the two phases vary with cooling rates. The nucleation mechanisms of the omega-related phases were also discussed.
引用
收藏
页数：6
相关论文
共 50 条
  • [21] DEFORMATION MECHANISMS IN Ti3Al-Nb ALLOY AT ELEVATED TEMPERATURES
    Tadic, Srdjan
    Prokic-Cvetkovic, Radica
    Balac, Igor
    Heinemann-Jancic, Radmila
    Bojic, Katarina
    Sedmak, Aleksandar
    MATERIALI IN TEHNOLOGIJE, 2010, 44 (06): : 357 - 361
  • [22] Phase field modeling of the Ti-6Al-4V solid-state transformation using synchrotron in-situ heat treatment calibration and validation
    Whitney, Bonnie C.
    Spangenberger, Anthony G.
    Lados, Diana A.
    JOURNAL OF MATERIALS SCIENCE, 2025, 60 (09) : 4343 - 4366
  • [23] Phase transformation and microstructural evolution in Ti-44Al-4Nb-4Zr alloy during heat treatment
    Yang, H. W.
    Lin, C.
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (11): : 3191 - 3196
  • [24] Phase transformation and microstructural evolution in Ti-44Al-4Nb-4Zr alloy during heat treatment
    H. W. Yang
    C. Lin
    Metallurgical and Materials Transactions A, 2006, 37 : 3191 - 3196
  • [25] Ti3Al matrix alloy refined and reinforced by in-situ synthesized SiCw/Nb4C3 core-shell structure
    Cui, Sen
    Cui, Chunxiang
    Kang, Licong
    Liu, Shuangjin
    Journal of Alloys and Compounds, 2021, 860
  • [26] Ti3Al matrix alloy refined and reinforced by in-situ synthesized SiCw/Nb4C3 core-shell structure
    Cui, Sen
    Cui, Chunxiang
    Kang, Licong
    Liu, Shuangjin
    JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 860
  • [27] In-situ multi-layer formation in the oxidation of Ti3Al-Nb
    Ramana G. Reddy
    JOM, 2002, 54 : 65 - 67
  • [28] In-situ multi-layer formation in the oxidation of Ti3Al-Nb
    Reddy, RG
    JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 2002, 54 (02): : 65 - 67
  • [29] Ti-46Al-4Nb alloy refined and reinforced by in-situ TiC nanoparticles and TiB2 whiskers
    Yang, Shichao
    Cui, Chunxiang
    Cui, Sen
    Liu, Shuangjin
    JOURNAL OF ALLOYS AND COMPOUNDS, 2022, 892
  • [30] Analyses of Phase Transformation Mechanism Based on In-situ Observation during Ti-10Nb-5Sn Alloy Heating Cycles
    Li, Yan
    Qi, Jie
    Zhai, Chuanxin
    Qiu, Ranfeng
    CHEMICAL ENGINEERING AND MATERIAL PROPERTIES II, 2012, 549 : 535 - +
12345