Joining of CP-Ti to 304 stainless steel using friction stir welding technique

被引：108
作者：
Fazel-Najafabadi, M. [1 ]
Kashani-Bozorg, S. F. [1 ]
Zarei-Hanzaki, A. [1 ]
机构：
[1] Univ Tehran, Univ Coll Engn, Sch Met & Mat Engn, Tehran, Iran
来源：
MATERIALS & DESIGN | 2010年 / 31卷 / 10期
关键词：
Welding; Mechanical; Microstructure; PURE TITANIUM; MECHANICAL-PROPERTIES; STAINLESS-STEEL; ALUMINUM; MICROSTRUCTURE; ALLOYS; JOINTS; ZONE;
D O I：
10.1016/j.matdes.2010.05.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Friction stir welding parameters were adjusted in order to achieve defect-free dissimilar lap joint of CP-Ti to 304 stainless steel. Titanium as a softer material was selected to be on the lap top side. The joint stir zone was found to be consisted of two main regions; the dominant fine dynamically re-crystallized titanium grains at the upper region and a minor composite-type microstructure of fragments of 304 stainless steel in a matrix of fine dynamically re-crystallized titanium grains in the lower region. The stir zone was separated from the 304 stainless steel side by an interface layer of TiFe-based crystal structure. Joint shear strength was measured; a maximum failure load of similar to 73% of that of CP-Ti was achieved. This was associated with the occurrence of fracture at the joint intermetallic-based interface. The failure load value of the fabricated joints is related to the thickness of the intermetallic interface. (C) 2010 Elsevier Ltd. All rights reserved.
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收藏
页码：4800 / 4807
页数：8
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