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首页> 外文期刊>Metals and Materials International >Influence of Initial Textures on Microstructure and Mechanical Properties of Commercially Pure TA2 Titanium Sheet Pre-Strained by Cryorolling
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Influence of Initial Textures on Microstructure and Mechanical Properties of Commercially Pure TA2 Titanium Sheet Pre-Strained by Cryorolling

机译：初始纹理对通过低温预紧的商业纯TA2钛板微观结构和力学性能的影响

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摘要

Titanium alloys are one of the most important structural materials for the aerospace applications, which bring active study on microstructural and mechanical optimization of the alloys. In the present study, commercial TA2 titanium sheets with different initial textures were rolled to a strain of 4% at liquid nitrogen temperature. Microstructures of the rolled sheets were characterized using a scanning electron microscope equipped with an EBSD detector and their mechanical properties were tested through quasi-static uniaxial tension tests at room temperature. The influence of the initial texture on the microstructure and mechanical performance of the cryorolled sheet were discussed. Twinning is found to occur in the TA2 sheets after rolling even at a small strain. Initial texture is an important factor affecting both numbers and types of the twins. {11-22} contraction twinning is always the dominating type of twins for all three sheets having different initial textures. A lot of {11-22} and {11-24} twins can be found in the sheets with the initial texture of C-axes//ND, while the sheet with an initial texture of C-axes away from the ND contains few twins, with a high density of dislocations developed instead. Along with contraction twinning, many {10-12} and {11-21} twins are detected in the sheet with the initial texture of C-axes perpendicular to ND. The cryorolled sheet having the densest twins shows the best mechanical properties, indicating a beneficial effect of a small pre-strain.
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  • 来源
  • 作者

    Wang Changhao; Luo Yu; Luo Jinru; Song Xiao; Zhang Wei; Wang Pinghuai; Liu Zhenghao; Wang Maoyin; He Xinghui; Chai Linjiang;

  • 作者单位

    China Acad Engn Phys Inst Mat Mianyang 621908 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang 621908 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang 621908 Sichuan Peoples R China;

    Univ Sci &

    Technol Beijing State Key Lab Adv Met &

    Mat Beijing 100083 Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang 621908 Sichuan Peoples R China;

    Southwestern Inst Phys Fusion Reactor Technol Div Chengdu 610000 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang 621908 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang 621908 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang 621908 Sichuan Peoples R China;

    Chongqing Univ Technol Coll Mat Sci &

    Engn Chongqing 400054 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 金属材料;
  • 关键词

    Commercially pure titanium; Cryorolling; Pre-strain; Mechanical properties; Twinning;

    机译：商业上纯钛;低温;预防;机械性能;孪生;
  • 入库时间 2022-08-20 18:22:34

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