Experimental Investigation on Joining Dissimilar Aluminum Alloy 6061 to TRIP 780/800 Steel Through Friction Stir Welding

被引：9

作者：

Liu, Xu ^{[1
]}

Lan, Shuhuai ^{[1
]}

Ni, Jun ^{[1
]}

机构：

[1] Univ Michigan, Dept Mech Engn, SM Wu Mfg Res Ctr, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME | 2015年 / 137卷 / 04期

基金：

美国国家科学基金会;

关键词：

friction stir welding; dissimilar Al 6061/TRIP steel; welding force; joint strength; Al-Fe interface; MECHANICAL-PROPERTIES; PARAMETERS; TOOL; MICROSTRUCTURE; STRENGTH; JOINTS; ZONE;

D O I：

10.1115/1.4030480

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Friction stir welding (FSW) technique has been successfully applied to butt joining of aluminum alloy 6061-T6 to one type of advanced high strength steel (AHSS), transformation induced plasticity (TRIP) 780/800 with the highest weld strength reaching 85% of the base aluminum alloy. Mechanical welding forces and temperature were measured under various sets of process parameters and their relationships were investigated, which also helped explain the observed macrostructure of the weld cross section. Compared with FSW of similar aluminum alloys, only one peak of axial force occurred during the plunge stage. Three failure modes were identified during tensile tests of weld specimens, which were further analyzed based on the microstructure of joint cross sections. Intermetallic compound (IMC) layer with appropriate thickness and morphology was shown to be beneficial for enhancing the strength of Al-Fe interface.

引用

页数：11

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