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
  • [1] The coherent growing of the γ-phase in Ti4Al3Nb alloy
    Guymont, M
    Sadi, FA
    Servant, C
    ELECTRON MICROSCOPY 1998, VOL 2: MATERIALS SCIENCE 1, 1998, : 159 - 160
  • [2] THE FORMATION OF ORDERED OMEGA-RELATED PHASES IN ALLOYS OF COMPOSITION TI4AL3NB
    BENDERSKY, LA
    BOETTINGER, WJ
    BURTON, BP
    BIANCANIELLO, FS
    SHOEMAKER, CB
    ACTA METALLURGICA ET MATERIALIA, 1990, 38 (06): : 931 - 943
  • [3] Transformations during continuous cooling of the alloy Ti4Al3Nb
    Sadi, FA
    Servant, C
    JOURNAL DE PHYSIQUE IV, 1996, 6 (C2): : 241 - 246
  • [4] High-resolution electron microscopy observation of the γ-phase in Ti4Al3Nb alloy
    Universite de Paris XI, Orsay, France
    Philos Mag Lett, 3 (167-171):
  • [5] Ti4Al3Nb alloy during high-temperature compression
    Liu, Xu
    Song, Lin
    Liu, Tong
    Stark, Andreas
    Pyczak, Florian
    He, Zhanbing
    Lin, Junpin
    Zhang, Tiebang
    JOURNAL OF ALLOYS AND COMPOUNDS, 2022, 918
  • [6] High-resolution electron microscopy observation of the gamma-phase in Ti4Al3Nb alloy
    Sadi, FA
    Guymont, M
    Servant, C
    PHILOSOPHICAL MAGAZINE LETTERS, 1997, 76 (03) : 167 - 171
  • [7] In- and ex-situ study of the deformation behavior of the βo(ωo) phase in a Ti4Al3Nb alloy during high-temperature compression
    Liu X.
    Song L.
    Liu T.
    Stark A.
    Pyczak F.
    He Z.
    Lin J.
    Zhang T.
    Journal of Alloys and Compounds, 2022, 918
  • [8] In-situ investigation on the β to α phase transformation in Ti-45Al-8.5Nb-(W, B, Y) alloy
    Yang, Guang
    Kou, Hongchao
    Yang, Jieren
    Li, Jinshan
    Fu, Hengzhi
    JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 663 : 594 - 600
  • [9] AN IN-SITU STUDY ON DISLOCATION BEHAVIOR OF CRACK-TIP IN Ti3Al-Nb ALLOY
    Wu Ying
    Transactions of Nonferrous Metals Society of China, 1997, (03) : 31 - 37
  • [10] An in-situ study on dislocation behavior of crack-tip in Ti3Al-Nb alloy
    Wu, Y
    Zhen, L
    Yang, DZ
    Liang, W
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 1997, 7 (03) : 30 - 36
12345