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TA18钛合金热变形行为及热加工图研究

彭力 江健 罗小峰 申学良 王莹 邢远

彭力, 江健, 罗小峰, 申学良, 王莹, 邢远. TA18钛合金热变形行为及热加工图研究[J]. 钢铁钒钛, 2022, 43(6): 45-50. doi: 10.7513/j.issn.1004-7638.2022.06.007
引用本文: 彭力, 江健, 罗小峰, 申学良, 王莹, 邢远. TA18钛合金热变形行为及热加工图研究[J]. 钢铁钒钛, 2022, 43(6): 45-50. doi: 10.7513/j.issn.1004-7638.2022.06.007
Peng Li, Jiang Jian, Luo Xiaofeng, Shen Xueliang, Wang Ying, Xing Yuan. Hot deformation behavior and processing maps of TA18 titanium alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 45-50. doi: 10.7513/j.issn.1004-7638.2022.06.007
Citation: Peng Li, Jiang Jian, Luo Xiaofeng, Shen Xueliang, Wang Ying, Xing Yuan. Hot deformation behavior and processing maps of TA18 titanium alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 45-50. doi: 10.7513/j.issn.1004-7638.2022.06.007

TA18钛合金热变形行为及热加工图研究

doi: 10.7513/j.issn.1004-7638.2022.06.007
详细信息
    作者简介:

    彭力,1990年出生,男,四川大英人,工程师,研究方向:钛合金加工,E-mail:listen0812@163.com

  • 中图分类号: TF823

Hot deformation behavior and processing maps of TA18 titanium alloy

  • 摘要: 采用Gleeble 3500热模拟试验机研究了TA18钛合金在750~1050 ℃和0.001~10 s−1条件下的热变形行为,建立了Zener-Hollomon参数(Z参数)的本构方程及热加工图。结果表明,TA18钛合金β单相区的变形激活能为310.71 kJ/mol,α+β双相区的应变激活能为578.78 kJ/mol。经过拟合得到了TA18钛合金在单相区和双相区变形的流变应力本构方程。通过对热加工图的分析,确定了TA18钛合金合理的热加工参数范围为:变形温度825~900 ℃,应变速率0.01~0.05 s−1。试验结果可为TA18钛合金热加工工艺参数的选择提供理论依据。
  • 图  1  TA18钛合金初始金相组织

    Figure  1.  Original microstructure of TA18 alloy

    图  2  不同应变速率条件下变形的真应力-真应变曲线

    Figure  2.  True stress-true strain curves of TA18 alloy at different strain rates

    图  3  应变速率与峰值应力的形变关系

    Figure  3.  Relationship between strain rates and peak stress

    图  4  应力和温度的变化关系

    Figure  4.  Relationship between stress and temperature

    图  5  lnZ与应力的关系

    Figure  5.  Relationship between lnZ and stress

    图  6  TA18钛合金不同应变下的热加工图

    Figure  6.  Processing maps of TA18 alloy at different strains

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出版历程
  • 收稿日期:  2022-04-18
  • 刊出日期:  2023-01-13

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