期刊
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
卷 18, 期 2, 页码 108-113出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/1362171812Y.0000000098
关键词
Friction stir welding; Dissimilar metal joint; Transmission electron microscopy; Aluminium alloys; Steels
资金
- Japan Aluminium Association
- Suzuki Foundation
- Priority Assistance for the Formation of Worldwide Renowned Centers of Research
Microscale evaluation of the mechanical properties of a friction stir welded A6061/SUS 304 grooved lap joint was performed using a microtensile test and transmission electron microscopy. The microtensile test revealed that similar to 62% of the area along which the rotating tool passed the specimen was regarded as the bonded region and that the joint was fractured at the A6061 matrix owing to the formation of very thin interfacial reaction layers. Equiaxed aluminium grains were observed at the interface of the specimen after it was fractured, indicating that the interface deformed only slightly during the microtensile test. It should be noted that although the maximum tensile strength of the joint was approximately the same as that of the base alloy, the proof stress of the joint decreased with the dissolution of the beta '' phase in the A6061 aluminium alloy.
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