TC4棒材热张力矫直数值模拟及工艺参数优化

王保琳; 黄文斌; 王富强; 柏春光; 穆生龙; 王冉; 张志强

doi:10.7513/j.issn.1004-7638.2025.01.010

TC4棒材热张力矫直数值模拟及工艺参数优化

doi: 10.7513/j.issn.1004-7638.2025.01.010

1.
沈阳化工大学材料科学与工程学院, 辽宁沈阳110142
2.
空军装备部驻沈阳地区第一军事代表室, 辽宁沈阳 110850
3.
沈阳飞机工业(集团) 有限公司, 辽宁沈阳 110850
4.
中国科学院金属研究所，辽宁沈阳 110016

基金项目: 国家自然科学基金委，青年基金项目（编号：52202271）；辽宁省科技厅，省博士启动基金项目（编号：2023-BS-144）；辽宁省教育厅青年项目，（编号：JYTQN2023375）。

详细信息

作者简介:
王保琳，1998年出生，女，河南驻马店人，硕士研究生，主要研究方向为钛合金热处理，E-mail：1213708276@qq.com

通讯作者:
柏春光，1978年出生，男，山东聊城人，研究员，博士，主要研究方向为医用工程合金材料，E-mail：cgbai@imr.ac.cn

中图分类号: TF823
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- PDF下载量: 9
- 被引次数: 0
出版历程
- 收稿日期: 2024-03-27
- 刊出日期: 2025-02-27

Numerical simulation of thermal tension straightening and optimization of process parameters on TC4 bar

1.
School of Material Science and Engineering，Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China
2.
The First Military Representative Office of the Air Force Armament Department in Shenyang, Shenyang 110850, Liaoning, China
3.
Shenyang Aircraft Industry (Group) Co., Ltd., Shenyang 110850, Liaoning, China
4.
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China

摘要

摘要: 钛合金棒材在生产加工过程中通常伴随着形状弯曲，热张力矫直是一种有效的矫直方式。运用有限元模拟软件ABAQUS建立了TC4棒材的热张力矫直模型，系统研究了矫直温度、保温时间和拉伸伸长量等矫直工艺参数对棒材直线度和残余应力的影响，并结合矫直物理试验对矫直工艺参数进行优化。结果表明，矫直的温度越高、保温时间越长，热拉伸量越大，TC4钛合金棒材的直线度越小，残余应力也越小；结合实际生产工况，确定750 ℃的矫直温度，2%的热拉伸量和10 s的保温时间为TC4钛合金棒材矫直的最佳工艺参数。
- TC4棒材 /
- 热张力矫直 /
- 有限元模拟 /
- 工艺参数优化
Abstract: Shape bending often occurs during the production process of titanium alloy bars, and thermal tension straightening is an effective straightening method. In this study, the thermal tension straightening model of TC4 bar was established by using the finite element simulation software ABAQUS. The influence of straightening process parameters such as straightening temperature, holding time and tensile elongation on the straightness and residual stress of TC4 bar was studied systematically. And the optimized straightening process parameters were obtained combined with the physical experiment of straightening. The results show that the higher the straightening temperature, the longer the holding time and the greater the thermal tensile amount, the smaller the straightness and the smaller the residual stress of TC4 bar. In view of the actual production conditions, the optimal process parameters for the straightening of TC4 titanium alloy bar are determined with a straightening temperature of 750 ℃, a thermal tensile amount of 2% and a holding time of 10 s.
- TC4 bar /
- thermal tension straightening /
- finite element simulation /
- optimization of process parameters

HTML全文

图 1 TC4在不同拉伸温度下的应力-应变曲线^[7]

Figure 1. Stress-strain curves of TC4 at different tensile temperatures^[7]

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图 2 TC4在不同拉伸温度下的应力松弛曲线^[7]

Figure 2. Stress relaxation curves of TC4 at different temperatures^[7]

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图 3 棒材初始形状的几何模型

Figure 3. Geometric model of the initial shape of the bar

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图 4 待矫直棒材的网格模型

Figure 4. Meshed model of the bar to be straightened

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图 5 回弹预测模型

Figure 5. Springback prediction model

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图 6 矫直过程仿真

(a)拉直；(b)加热；(c)热拉伸；(d)保温；(e)冷却；(f)反弹

Figure 6. Simulation diagrams of the straightening procedure

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图 7 不同温度下矫直效果

(a)直线度；(b)轴向残余应力分布

Figure 7. Straightening effect at different temperatures

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图 8 不同保温时间下矫直效果

(a)直线度；(b)轴向残余应力

Figure 8. Straightening effect at different holding time

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图 9 不同伸长量下矫直效果

(a) 直线度；(b)轴向残余应力

Figure 9. Straightening effect at different elongation

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图 10 热拉伸前棒材弯曲内外侧受力示意

Figure 10. Schematic diagram of the force on the inside and outside of the bar bending before hot drawing

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图 11 模拟与试验结果对比

(a)温度；(b)保温时间

Figure 11. Comparison of simulation and experimental results

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表 1 TC4钛合金的化学成分

Table 1. Chemical compositions of TC4 titanium alloy %

Ti V Al Fe C N H O 其他

基体 4.5 6.8 0.30 0.10 0.05 0.015 0.20 0.02

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表 2 模拟试验方案

Table 2. Simulation experiment scheme

试验方案温度/℃ 保温时间/s 伸长量/%

1 600 30 2
2 650 30 2
3 700 30 2
4 750 30 2
5 800 30 2
6 700 1 2
7 700 10 2
8 700 60 2
9 700 120 2
10 700 30 1
11 700 30 3

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