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激光修复TC4钛合金材料动态力学性能

王涛 乔伟林 李战 王盛 王宁 王浩

王涛, 乔伟林, 李战, 王盛, 王宁, 王浩. 激光修复TC4钛合金材料动态力学性能[J]. 机械科学与技术, 2019, 38(7): 1029-1034. doi: 10.13433/j.cnki.1003-8728.2019.20180268
引用本文: 王涛, 乔伟林, 李战, 王盛, 王宁, 王浩. 激光修复TC4钛合金材料动态力学性能[J]. 机械科学与技术, 2019, 38(7): 1029-1034. doi: 10.13433/j.cnki.1003-8728.2019.20180268
Wang Tao, Qiao Weilin, Li Zhan, Wang Sheng, Wang Ning, Wang Hao. Dynamic Mechanical Properties of Laser-repaired TC4 Titanium Alloy Material[J]. Mechanical Science and Technology for Aerospace Engineering, 2019, 38(7): 1029-1034. doi: 10.13433/j.cnki.1003-8728.2019.20180268
Citation: Wang Tao, Qiao Weilin, Li Zhan, Wang Sheng, Wang Ning, Wang Hao. Dynamic Mechanical Properties of Laser-repaired TC4 Titanium Alloy Material[J]. Mechanical Science and Technology for Aerospace Engineering, 2019, 38(7): 1029-1034. doi: 10.13433/j.cnki.1003-8728.2019.20180268

激光修复TC4钛合金材料动态力学性能

doi: 10.13433/j.cnki.1003-8728.2019.20180268
基金项目: 

国家自然科学基金民航联合研究基金项目 U1633104

天津市自然科学基金企业科技特派员项目 17JCTPJC51800

数字制造装备与技术国家重点实验室开放课题 DMETKF2017018

详细信息
    作者简介:

    王涛(1979-), 教授, 博士, 研究方向为数字化制造, 激光增材制造, wangtaotdme@163.com

    通讯作者:

    王浩, 讲师, hdwh@126.com

  • 中图分类号: TH142.2

Dynamic Mechanical Properties of Laser-repaired TC4 Titanium Alloy Material

  • 摘要: 本文针对激光修复TC4钛合金和商用TC4钛合金基材两种试验材料,利用分离式Hopkinson压杆(SHPB)装置,在室温下对两种材料进行动态压缩试验,得到了两种试样材料的真实应力-应变曲线。结果表明:SHPB试验后,两种试样都有明显的墩粗,并且部分试样破碎;两种试样材料都具有明显的应变率强化效应;另外,通过对比分析两种材料相同应变率下的应力-应变曲线,发现激光修复TC4钛合金的动态力学性能略优于商用TC4钛合金基材。
  • 图  1  LMD样块

    图  2  试样设计示意图

    图  3  SHPB测试装置示意图

    图  4  SHPB试验后两组试样断裂图

    图  5  激光修复TC4钛合金材料在高应变率下的真实应力-应变曲线

    图  6  TC4钛合金基材在高应变率下的真实应力-应变曲线

    图  7  激光修复TC4钛合金材料和商用TC4钛合金基材材料在相同应变率下的真实应力-应变曲线

    表  1  TC4粉末的化学成分(质量分数, %)

    Al V Fe O C N H Ti
    5.5 3.5 0.3 0.2 0.1 0.05 0.015 余量
    下载: 导出CSV

    表  2  SHPB试验A组数据

    编号 压力值/MPa 原始尺寸/mm 撞击后尺寸/mm
    A1 0.35 ∅6.50×5.98 ∅6.78×5.22
    A2 0.35 ∅6.52×6.02 ∅6.74×5.24
    A3 0.35 ∅6.44×6.00 ∅6.70×5.24
    A4 0.52 ∅6.54×6.02 ∅7.02×5.04
    A5 0.52 ∅6.48×5.98 破碎
    A6 0.52 ∅6.50×5.98 ∅7.00×5.02
    A7 0.64 ∅6.54×6.02 ∅7.02×4.88
    A8 0.64 ∅6.50×5.96 破碎
    A9 0.64 ∅6.52×6.04 ∅7.08×4.90
    A10 0.85 ∅6.50×5.98 破碎
    A11 0.85 ∅6.52×5.96 ∅7.26×4.58
    A12 0.85 ∅6.48×6.02 破碎
    下载: 导出CSV

    表  3  SHPB试验B组数据

    编号 压力值/MPa 原始尺寸/mm 撞击后尺寸/mm
    B1 0.35 ∅6.50×6.02 ∅6.78×5.20
    B2 0.35 ∅6.52×5.98 ∅6.82×5.16
    B3 0.35 ∅6.48×5.96 ∅6.76×5.12
    B4 0.52 ∅6.54×5.98 ∅7.06×5.02
    B5 0.52 ∅6.46×6.04 破碎
    B6 0.52 ∅6.52×5.98 ∅7.00×5.00
    B7 0.64 ∅6.50×6.00 破碎
    B8 0.64 ∅6.50×5.98 ∅7.18×4.82
    B9 0.64 ∅6.46×6.04 ∅7.06×4.84
    B10 0.85 ∅6.54×6.02 破碎
    B11 0.85 ∅6.46×5.96 破碎
    B12 0.85 ∅6.48×6.02 破碎
    下载: 导出CSV
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  • 收稿日期:  2018-07-04
  • 刊出日期:  2019-07-05

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