한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 2005년도 춘계학술대회 논문집
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- Pages.1398-1401
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- 2005
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- 2005-8446(pISSN)
나노/마이크로 인덴터와 AFM을 이용한 스퀴즈 캐스트 A356 합금의 시효경화특성 평가
Evaluation of Age-Hardening Characteristics of Squeeze-Cast A356 Alloy by Using Micro/Nano Indenter with AFM
초록
The nano/microstructure, the aging response (in T5 heat treatment), and the mechanical/tribological properties of the eutectic regions in squeeze-cast A356 alloy were investigated using nano/micro-indentation and mechanical scratching, combined wit optical microscopy and atomic force microscope(AFM). Most eutectic Si crystals in the A356 alloy showed a modified morphology as fine-fibers. The loading curve for the eutectic region was more irregular than that of the primary Al region due to the presence of various particles of varying strength. In addition, the eutectic region showed lower pile-up and higher elastic recovery than the primary Al region. The aging responses of the eutectic regions in the squeeze-cast A356 alloys aged at
키워드