Effect of post-weld heat treatment on microstructure and property of linear friction welded TC17/TA15 titanium alloy joint

被引：8
|
作者：
Wang, Caimei [1 ]
Guo, Qilong [1 ]
Zhu, Xiaoteng [1 ]
He, Peng [2 ]
Zhang, Jianjun [1 ]
Han, Feng [1 ]
Hu, Zhenggen [3 ]
Liang, KaiMing [3 ]
Zhang, Hua [1 ]
机构：
[1] Beijing Inst Petrochem Technol, Sch Mech Engn, Beijing 102617, Peoples R China
[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[3] Beijing Inst Astronaut Syst & Engn, Beijing 100076, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2023年 / 199卷
关键词：
Linear friction welding; Titanium alloy; Post-weld heat treatment; Microstructure; Mechanical and corrosion properties; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; TI-6AL-4V ALLOY; BETA-PHASE; TEMPERATURE; EVOLUTION; TEXTURE; ZONE;
D O I：
10.1016/j.matchar.2023.112799
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
TC17 and TA15 titanium alloys were joined using linear friction welding (LFW) method. After welding, post-weld treatment of welds was carried out at 600 and 650 degrees C for 3 h followed by vacuum furnace cooling. The microstructure, mechanical and corrosion property of TC17/TA15 welded joint were investigated. Results indicate that the fraction of a phase in welding zone (WZ) gradually increased with increasing heat treatment temperature. The grain refinement occurs after heat treatment due to increasing recrystallization extent. The mechanical and corrosion properties of welded joints are remarkably improved after heat treatment. The fraction location of welds changes from WZ to TA15 base metal. After heat treatment at 650 degrees C, the corrosion rate of welds decreases from 1.33 x 10(-7) to 7.4 x 10(-8) g/mm(2)center dot h. The results could provide a guidance for simultaneously improving mechanical and corrosion property of dissimilar LFWed titanium alloy joint.
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页数：8
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