Linear friction welding of Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy with dissimilar microstructure

被引：45
|
作者：
Ji, Yingping [1 ]
Chai, Zhenzhen [1 ]
Zhao, Dalong [1 ]
Wu, Sujun [1 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2014年 / 214卷 / 04期
关键词：
Linear friction welding; Titanium alloys; Microstructure; Formation mechanism; Recrystallization; STAINLESS-STEEL; FATIGUE PROPERTIES; TITANIUM-ALLOY; TI-6AL-4V; ALUMINUM; MECHANISM; EVOLUTION; JOINTS;
D O I：
10.1016/j.jmatprotec.2013.11.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dissimilar linear friction welding of Ti-5Al-2Sn-2Zr-4Mo-4Cr with bimodal and lamellar microstructures was produced. The microstructure evolution of the joint was investigated via OM, SEM, XRD, TEM and microhardness analysis. The temperature field of joint was calculated by a numerical model. The typical microstructures of weld center were recrystallized p grains with some acicular alpha '' martensites. In the case of thermo-mechanically affected zone, some partial re-crystallization grains formed in severely deformed microstructures, where a mass of dislocations were observed. However, dislocations were rarely found in the recrystallized beta grains of weld center, the temperature field of weld joints calculated was consistent with the microstructural evolution. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：979 / 987
页数：9
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