+高级检索
基于摩擦修正的TC6钛合金低应变速率变形本构模型建立
作者单位:

1.南昌航空大学;2.中航西安飞机工业集团股份有限公司

基金项目:

航空科学基金(2019ZE056009);江西省重点研发计划(20202BBEL53012)


Low strain rate deformation constitutive model of TC6 titanium alloy based on friction correction
Affiliation:

Ives

  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [12]
  • |
  • 相似文献 [20]
  • | | |
  • 文章评论
    摘要:

    采用Thermecmastor-Z100kn热模拟试验机对TC6钛合金进行了低应变速率大变形热压缩试验,获得了变形温度范围为900~945℃、应变速率范围为0.0001~0.1s-1、变形程度为70%时的真应力-真应变曲线。分别使用传统摩擦修正模型与改进摩擦修正模型对真应力-真应变曲线进行修正,并建立了基于摩擦修正的应变补偿型Arrhenius模型。结果表明:改进摩擦修正模型能更好地表征材料在大变形状态下的真应力-真应变动态响应。经摩擦模型修正的应变补偿型Arrhenius模型相线性相关度较高,平均绝对误差较小,预测值精度较高。

    Abstract:

    The thermal compression test of TC6 titanium alloy under low strain rate and large deformation was carried out by Thermecmastor Z100kn thermal simulation machine. The true stress-strain curves were obtained when the deformation temperature was 900 ~ 945℃, the strain rate was 0.0001 ~ 0.1s-1 and the deformation degree was 70%.The traditional friction correction model and the improved friction correction model were used to correct the true stress-strain curve, and the strain-compensated Arrhenius model based on the friction correction was established. The results show that the modified friction correction model can better characterize the true stress-strain dynamic response of materials under large deformation. The strain-compensated Arrhenius model modified by friction model has higher linear correlation, smaller mean absolute error and higher prediction accuracy.

    参考文献
    [1]刘炳南,胡耀君,夏广祥.BT3-1钛合金棒材锻造工艺研究[J].稀有金属材料与工程, 1983(5):7.
    [2]朱艳春,石晓辉,曾卫东,等.轻合金热变形本构模型研究[J].轻金属,2017(5):9.
    [3]徐俊阳,刘劲松,边丽虹.TC6钛合金高温变形本构方程的建立[J].沈阳理工大学学报,2014,33(2):4.
    [4]贾宝华,刘思勇,李革,等.基于J-C模型的TC18钛合金动态本构方程构建[J]. 钛工业进展, 2018, 35(5):5.
    [5]段园培,黄仲佳,余小鲁,等.基于摩擦修正的TB6合金流变应力行为研究及本构模型建立[J].稀有金属,2014,38(2):8.
    [6]尚丽梅,王春旭,韩顺,等.基于摩擦-温度双修正的Maraging250钢热变形行为及热加工图[J].金属热处理,2021,46(5):7.
    [7] Roebuck B , Lord J D , Brooks M , et al. Measuring flow stress in hot axisymmetric compression tests[J]. Materials at High Temperatures, 2002, 23(2):59-83.
    [8] 陈建维. TC4钛合金深筒形件的超塑成形及其精度控制[D]. 哈尔滨工业大学, 2007.
    [9] 袁汉昌, 张绪寿, 陈绍澧. 固体的摩擦与润滑(续篇)[J]. 机械工业出版社, 1986.
    [10]詹亮亮. AF1410钢热变形过程的晶粒演化模型与典型航空锻件数值模拟[D]. 燕山大学,2017.
    [11]Sellars C M , Mctegart W J . On the mechanism of hot deformation[J]. Acta Metallurgica, 1966, 14(9):1136-1138.
    [12]Zener C, Hollomon J H. Effect of strain rate upon plastic flow of steel[J]. Journal of Applied physics, 1944, 15(1): 22-32.
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

朱琳,徐勇,陈乐平,胡生双,辛周媛.基于摩擦修正的TC6钛合金低应变速率变形本构模型建立[J].稀有金属材料与工程,2023,52(5):1819~1825.[Zhu Lin, Xu Yong, Chen Leping, Hu Shengshuang, Xin Zhouyuan. Low strain rate deformation constitutive model of TC6 titanium alloy based on friction correction[J]. Rare Metal Materials and Engineering,2023,52(5):1819~1825.]
DOI:10.12442/j. issn.1002-185X.20220342

复制
文章指标
  • 点击次数:418
  • 下载次数: 1103
  • HTML阅读次数: 52
  • 引用次数: 0
历史
  • 收稿日期:2022-04-22
  • 最后修改日期:2022-06-14
  • 录用日期:2022-07-12
  • 在线发布日期: 2023-06-08
  • 出版日期: 2023-05-29