Mechanical and Microstructural Characterization of Al-5083/St-12 lap joints made by friction stir welding

被引：47

作者：

Movahedi, M. ^{[1
]}

Kokabi, A. H. ^{[1
]}

Reihani, S. M. Seyed ^{[1
]}

Najafi, H. ^{[2
]}

机构：

[1] Sharif Univ Technol, Dept Mat Sci & Engn, POB 11365-9466, Tehran, Iran

[2] Ecole Polytech Fed Lausanne, ICMP, CH-1015 Lausanne, Switzerland

来源：

11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11) | 2011年 / 10卷

关键词：

Friction stir welding; Lap joint; Al-5083; St-12; Joint strength; AISI-1018; STEEL; ALUMINUM-ALLOY; SHEET;

D O I：

10.1016/j.proeng.2011.04.544

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Al-5083 and St-12 alloys sheets were friction stir lap welded at various travel and rotation speeds of the welding tool. Microscopic examinations indicate that the joint strength is due to the macroscopic and microscopic mechanical lockings and also atomic diffusion. The reaction zone of the welded joints consists of mixed layers of ultra-fine grains and the intermetallic compounds. The microhardness and nano indentation results prove that the intermetallic phase layer is more brittle in comparison to base metals and ultra-fine grain region. The fracture surfaces are a combination of brittle and ductile fractures. The fracture loads show that the joint strength improves significantly by decreasing the travel speed of the tool. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of ICM11

引用

页码：3297 / 3303

页数：7

共 9 条

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