热处理制度对<strong>Ti-6Al-4V</strong>合金显微组织和弹性模量的影响

doi:10.11901/1005.3093.2025.153

材料研究学报

2026, Vol. 40

Issue (3): 201-209 DOI: 10.11901/1005.3093.2025.153

研究论文

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热处理制度对Ti-6Al-4V合金显微组织和弹性模量的影响

曹云淇¹^,², 张志强¹^,²(

), 王冉², 贾清¹^,², 李雕峰², 柏春光¹^,², 杨锐¹^,²

^1.中国科学技术大学材料科学与工程学院沈阳 110016
^2.中国科学院金属研究所师昌绪先进材料创新中心沈阳 110016

Effect of Heat Treatment Procedures on Microstructure and Elastic Modulus of Ti-6Al-4V Alloy

CAO Yunqi¹^,², ZHANG Zhiqiang¹^,²(

), WANG Ran², JIA Qing¹^,², LI Diaofeng², BAI Chunguang¹^,², YANG Rui¹^,²

^1.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
^2.Shi -changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

曹云淇, 张志强, 王冉, 贾清, 李雕峰, 柏春光, 杨锐. 热处理制度对Ti-6Al-4V合金显微组织和弹性模量的影响[J]. 材料研究学报, 2026, 40(3): 201-209.
Yunqi CAO, Zhiqiang ZHANG, Ran WANG, Qing JIA, Diaofeng LI, Chunguang BAI, Rui YANG. Effect of Heat Treatment Procedures on Microstructure and Elastic Modulus of Ti-6Al-4V Alloy[J]. Chinese Journal of Materials Research, 2026, 40(3): 201-209.

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摘要:

在不同温度对Ti-6Al-4V合金退火以调控其微观组织，研究了退火温度对其组织演变和弹性模量的影响及其机制。结果表明，与退火前相比，在560~590 ℃退火后合金中的α相体积分数和强度提高；在590~830 ℃随着退火温度的提高，合金的组织发生回复、再结晶和晶粒长大，β相的体积分数提高、弹性模量和屈服强度降低；在830~920 ℃退火，随着退火温度的提高，β相的体积分数提高且析出次生α相，使合金的弹性模量和屈服强度提高。

关键词 ：金属材料, Ti-6Al-4V合金, 退火热处理, 显微组织, 弹性模量

Abstract：

Ti-6Al-4V alloy is an ideal material for manufacturing the ultrasonic scalpel rod because of its good acoustic matching performance, low damping, excellent corrosion resistance, outstanding fatigue performance and biocompatibility. The elastic modulus is an important factor affecting the service function of the ultrasonic cutter. Herein, the different annealing heat treatment procedures on the variation in microstructure and elastic modulus of the as-received drawn wire of Ti-6Al-4V alloy with 5.8 mm in diameter was studied aiming to understand the relevant influence mechanism and to acquire the optimal comprehensive performance for the alloy. The results show that for annealing within the temperature range of 560-590 ^oC, the volume fraction of the α phase increases compared with the as-received material, resulting in an increase in the strength of the alloy. Within the temperature range of 590-830 ^oC, with the increase of the annealing temperature, the microstructure gradually undergoes recovery, recrystallization and grain growth. The volume fraction of the β phase increases, the elastic modulus of the material decreases, and the yield strength also decreases. Within the temperature range of 830-920 ^oC, with the increase of the annealing temperature, the volume fraction of the β transformation structure increases, and the secondary α phase precipitates from the β phase. The elastic modulus of the material increases, and the yield strength increases.

Key words： metallic materials Ti-6Al-4V alloy annealing microstructure elastic modulus

收稿日期: 2025-04-23

ZTFLH:

TG146.2

基金资助:国家自然科学基金(52401178)

通讯作者: 张志强，副研究员，zqzhang@imr.ac.cn，研究方向为高性能钛合金研制

Corresponding author: ZHANG Zhiqiang, Tel: (024)83970071, E-mail: zqzhang@imr.ac.cn

作者简介: 曹云淇，男，1999年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2025.153 或 https://www.cjmr.org/CN/Y2026/V40/I3/201

图1 M6拉伸试样

图2 原始材料样品的SEM图、IPF面分布图和极图

图3 在不同退火温度样品的XRD谱

图4 在不同温度退火热处理试样的SEM图

图5 材料中β相(βT)的体积分数随退火温度的变化

图6 在不同温度退火热处理试样的IPF面分布图

图7 在不同温度退火热处理试样的GOS图

图8 退火温度对变形晶粒、回复晶粒和再结晶晶粒体积分数的影响

图9 在不同温度退火处理试样的极图

图10 材料的弹性模量随退火温度的变化

图11 材料的屈服强度和抗拉强度、断后延伸率和断面收缩率随退火温度的变化图

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