Variant selection of orthorhombic phase precipitation and its effect on colony side plates formation in Ti-22Al-25Nb alloy

被引：3
作者：
Zhang, Fan [1 ,2 ]
Zeng, Weidong [1 ,2 ]
Ma, Haoyuan [1 ,2 ]
Zhang, Penghui [1 ,2 ]
Liang, Xiaobo [3 ]
机构：
[1] Northwestern Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Def Technol Innovat Ctr Precis Forging & Ring Roll, Sch Mat Sci & Engn, Xian 710072, Peoples R China
[3] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2023年 / 25卷
基金：
中国国家自然科学基金;
关键词：
Orthorhombic phase precipitates; Variant selection; Allotriomorphic lamellar structure; Colony side plates; Ti-22Al-25Nb alloy; BOUNDARY-CHARACTER-DISTRIBUTION; BETA GRAIN-BOUNDARIES; ALPHA-PHASE; MICROSTRUCTURE EVOLUTION; MECHANICAL-PROPERTIES; TRANSFORMATIONS; WIDMANSTATTEN; MORPHOLOGY;
D O I：
10.1016/j.jmrt.2023.06.254
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Heat treatments with controlled cooling rates have been used to investigate orthorhombic (O) phase precipitation and its variant selection (VS) in Ti-22Al-25Nb alloy, a latest Ti2AlNb-based intermetallic alloy with excellent comprehensive properties. This study uncovers the misorientation types of different O variants mainly belong to two types with a sharing angle of 90(degrees) and distinct rotated axis of <012> or <100>. A notable lamellar structure, colony side plates (CSPs), frequently develop on both sides of adjoining B2 grains, which always have a detrimental effect on the final properties. This structure significantly influenced by VS, variants having (001) planes that are paralleled to the common {110} plane of adjacent B2 grains are selected in colony plates on both sides. If the <111> axis of the two B2 grains coincidentally close as well, the colony plates may appear to penetrate the GB. Moreover, the CSPs structure could form on condition of much slow cooling rate after holding in rather high temperature. These findings could provide insights on how to control processing conditions and tailor the lamellar structure to obtain the desired properties.
引用
收藏
页码：4686 / 4699
页数：14
相关论文
共 53 条
  • [1] Phase transformations during cooling in α+β titanium alloys
    Ahmed, T
    Rack, HJ
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 243 (1-2): : 206 - 211
  • [2] Prediction of Crack Propagation of Nano-Crystalline Coating Material Prepared from (SAM2X5): Experimentally and Numerically
    Al-Abboodi, Hamid
    Fan, Huiqing
    Al-Bahrani, Mohammed
    [J]. CRYSTALS, 2023, 13 (02)
  • [3] The dry sliding wear rate of a Fe-based amorphous coating prepared on mild steel by HVOF thermal spraying
    Al-Abboodi, Hamid
    Fan, Huiqing
    Mhmood, Ibtihal A.
    Al-Bahrani, Mohammed
    [J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2022, 18 : 1682 - 1691
  • [4] Experimental Investigation and Numerical Simulation for Corrosion Rate of Amorphous/Nano-Crystalline Coating Influenced by Temperatures
    Al-Abboodi, Hamid
    Fan, Huiqing
    Mahmood, Ibtihal A.
    Al-Bahrani, Mohammed
    [J]. NANOMATERIALS, 2021, 11 (12)
  • [5] PHASE-TRANSFORMATIONS IN THE (TI,AL)3NB SECTION OF THE TI-AL-NB SYSTEM .1. MICROSTRUCTURAL PREDICTIONS BASED ON A SUBGROUP RELATION BETWEEN PHASES
    BENDERSKY, LA
    ROYTBURD, A
    BOETTINGER, WJ
    [J]. ACTA METALLURGICA ET MATERIALIA, 1994, 42 (07): : 2323 - 2335
  • [6] COHERENT PRECIPITATES IN THE BCC ORTHORHOMBIC 2-PHASE FIELD OF THE TI-AL-NB SYSTEM
    BENDERSKY, LA
    BOETTINGER, WJ
    ROYTBURD, A
    [J]. ACTA METALLURGICA ET MATERIALIA, 1991, 39 (08): : 1959 - 1969
  • [7] Crystallographic and morphological relationships between β phase and the Widmanstatten and allotriomorphic α phase at special β grain boundaries in an α/β titanium alloy
    Bhattacharyya, D.
    Viswanathan, G. B.
    Fraser, Hamish L.
    [J]. ACTA MATERIALIA, 2007, 55 (20) : 6765 - 6778
  • [8] Deformation mechanism of various Sn-xBi alloys under tensile tests
    Cai, Shanshan
    Luo, Xiaobin
    Peng, Jubo
    Yu, Zhiqi
    Zhou, Huiling
    Liu, Ning
    Wang, Xiaojing
    [J]. ADVANCED COMPOSITES AND HYBRID MATERIALS, 2021, 4 (02) : 379 - 391
  • [9] Microstructure evolution and mechanical properties of a Ti-45Al-8.5Nb-(W, B, Y) alloy obtained by controlled cooling from a single β region
    Cao, Bei
    Yang, Jieren
    Wang, Xuyang
    Wu, Yulun
    Hu, Rui
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 740 : 1140 - 1148
  • [10] Revealing Microstructural, Textural, and Hardness Evolution of Ti-6Al-4V Sheet Cooled From Sub β-Transus Temperature at Different Rates
    Chai, Linjiang
    Xia, Jiying
    Murty, Korukonda L.
    Gu, Xinfu
    Fan, Jiangkun
    Yao, Zhongwen
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2022, 53 (08): : 3179 - 3193
123456