THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF FRICTION STIR WELDED TI6AL4V TITANIUM ALLOY UNDER beta TRANSUS TEMPERATURE

被引：0

作者：

Ji, S. D. ^{[1
]}

Zhuo, B. ^{[1
]}

Gao, S. S. ^{[1
]}

Huang, Y. X. ^{[2
]}

Zhang, L. G. ^{[1
]}

Li, J. Z. ^{[3
]}

Ma, Y. N. ^{[1
]}

机构：

[1] Shenyang Aerosp Univ, Fac Aerosp Engn, 37 Daoyi South Ave, Shenyang 110136, Peoples R China

[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 100024, Peoples R China

[3] Beijing Aeronaut Mfg Technol Res Inst, Beijing 100024, Peoples R China

来源：

ENGINEERING REVIEW | 2015年 / 35卷 / 01期

关键词：

Friction stir welding; Ti6Al4V titanium alloy; Microstructure; Tensile strength;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ti6Al4V titanium alloy is friction stir welded using a W-Re rotational tool. The effects of welding speed on the microstructure, tensile strength and fracture properties of weld are investigated. At the rotational velocity of 250 r/min, the peak temperature is lower than beta transus temperature, and the weld nugget is made up of fine a phase and transformed beta phase. The grain size of shoulder affected zone is bigger than that of weld nugget because of low thermal conductivity of Ti6Al4V titanium alloy. By increasing the welding speed, the grain size of weld nugget, the tensile strength and the ductility of weld all are decreased.

引用

页码：27 / 31

页数：5

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