[1]李瑞,彭轩强,关蕾,等.固溶温度对TA31钛合金板材冲击韧性的影响规律及机理[J].中国材料进展,2025,44(06):523-529.[doi:10.7502/j.issn.1674-3962.202503002]
　LI Rui,PENG Xuan-qiang,Guan Lei,et al.Effect of Solution Temperature on Impact Toughness of TA31 Titanium Alloy Sheet and Underlying Mechanism[J].MATERIALS CHINA,2025,44(06):523-529.[doi:10.7502/j.issn.1674-3962.202503002]
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固溶温度对TA31钛合金板材冲击韧性的影响规律及机理()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
44
期数:
2025年06
页码:
523-529
栏目:
出版日期:
2025-06-30

文章信息/Info

Title:
Effect of Solution Temperature on Impact Toughness of TA31 Titanium Alloy Sheet and Underlying Mechanism
文章编号:
1674-3962(2025)06-0523-07
作者:
李瑞; 彭轩强; 关蕾; 李可尔; 庞莲; 王鼎春; 陈威
1.宝鸡钛业股份有限公司，陕西 宝鸡，721014； 2.西安交通大学材料科学与工程学院，陕西 西安 710049；
Author(s):
LI Rui; PENG Xuan-qiang; Guan Lei; LI Ke-er; PENG Lian;  WANG Ding-chun; CHEN Wei
1. Baoji Titanium Industry Co Ltd, Baoji 721014, China. 2. School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China；
关键词:
TA31钛合金; 冲击功; 固溶温度; 显微组织; 裂纹扩展
Keywords:
TA31 titanium alloy;  impact properties;  solution temperature;  microstructure;  crack propagation
分类号:
TG146.23
DOI:
10.7502/j.issn.1674-3962.202503002
文献标志码:
A
摘要:
随着人类对海洋探索的不断深入，海水对潜艇的冲刷与侵蚀问题愈发显著，这对长期服役于恶劣海洋环境中的钛合金材料的抗冲击性能提出了更为严苛的要求。研究了固溶温度对TA31钛合金板材的冲击韧性的影响。结果表明，当固溶温度（870 ℃）低于β转变温度时，合金的微观组织主要由椭圆状的初生α相和β转变组织组成。随着固溶温度逐渐升高（970 ℃），初生α相的数量逐渐减少，而β转变组织的比例则相应增多，并且在β转变组织中观察到少量片层状α相析出。当固溶温度(1020 ℃)进一步提升至高于β转变温度时，β基体上会形成大量的片层α相，这些片层α相交错排列，构成典型的网篮组织。经870 ℃固溶1 h处理后的冲击试样（V型口）冲击性能最好，冲击吸收功可达到108.81 J，其中以裂纹扩展功为主。具体地，裂纹萌生功为18.97 J，裂纹扩展功为89.84 J。固溶温度对TA31钛合金微观组织和冲击功产生着显著影响。具体而言，随着固溶温度的逐渐升高，TA31钛合金的冲击韧性呈现出明显的下降趋势。
Abstract:
With the deepening of human exploration of the ocean, the erosion and corrosion of submarines by seawater are becoming increasingly significant, which puts forward more stringent requirements for the impact resistance of titanium alloy materials long-tern serving in harsh marine environments. In this paper, the effect of solution temperature on the impact toughness of TA31 alloy sheet is studied. The results show that when the solution temperature (870 ℃) is lower than the β transition temperature, the microstructure of the alloy is mainly composed of ellipticity primary α phase and β-transition structure. With the increase of solution temperature (970 ℃), the number of primary α phase decreases gradually, while the proportion of β-transformed structure increases correspondingly, and a small amount of lamellar α phase is observed in the β-transformed structure. When the solution temperature (1020 ℃) is further increased to higher than the β transition temperature, a large number of lamellar α phases is formed on the β matrix. These lamellar α phases are interlaced and arranged, forming a typical basket-weave microstructure. After solution treatment at 870 ℃ for 1 h, the impact specimen (V-notch) has the best impact performance, and the impact absorption energy reaches 108.81 J, among which the crack propagation energy is the main part. Specifically, the work of crack initiation is 18.97 J, and the work of crack propagation is 89.84 J. The solution temperature has a significant effect on the microstructure and impact properties of TA31 alloy. Specifically, with the increase of solution temperature, the impact toughness of TA31 alloy shows a significant downward trend.

备注/Memo

备注/Memo:
收稿日期：2025-03-04修回日期：2025-06-12 基金项目：西安交通大学-陕西有色金属集团产业创新研究院专项资金资助项目（XY2023052） 第一作者：李瑞，男，1988年生，高级工程师， Email: lirui602@163.com
更新日期/Last Update: 2025-05-29