대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)
- 대한용접접합학회 2003년도 추계학술발표대회 개요집
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- Pages.253-255
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- 2003
마찰교반접합프로세스를 응용한 알루미늄합금의 결정립미세화
Application of Friction Stir Welding Process to Grain Refinement of Aluminum Alloys
- 권용재 ;
- ;
- Naobumi Saito (Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology(AIST))
- 발행 : 2003.11.01
초록
Commercially pure 1050 aluminum alloy with ultra-fine grain sizes was produced by a friction stir process. The maximum temperature in the friction stir processed zone decreased almost linearly with the tool rotation speed. In the friction stir processed zone, dislocation density was very low and fine equiaxed grains were observed. The grain size decreased with tool rotation speed. It is noteworthy that, for 560 rpm, a grain size decreased to even the submicron level with only the single pass of friction stir process. These fine grains resulted in improvement in hardness of the friction stir processed zone.
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