材料科学
微观结构
焊接
压痕硬度
铁氧体(磁铁)
珠光体
冶金
接头(建筑物)
延展性(地球科学)
复合材料
极限抗拉强度
焊接接头
马氏体
奥氏体
蠕动
结构工程
工程类
作者
Tiejun Ma,Wenya Li,Quanzhou Xu,Yong Zhang,Jinglong Li,Siqian Yang,Hanlin Liao
标识
DOI:10.1002/adem.200700090
摘要
Linear friction welding (LFW) is an emerging solid-state joining process to extend the current applications of welding. The microstructure evolution and mechanical properties of LFW 45 steel joint were investigated. The microstructures from the weld center to the parent metal were the superfine ferrite+pearlite in the weld center, the deformed fine ferrite + pearlite in the thermomechanically affected zone, the tempered sorbite, troosite and martensite in the heat affected zone. The microhardness of the joint decreased gradually from the parent metal to the weld center. The tensile properties of the joint were significantly improved in both the strength and ductility. The microstructure evolution, microhardness variation and fracture position are attributed to the various thermal histories of different positions.
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