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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 445 - 450 (6page)
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초록· 키워드
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High pressure torsion (HPT) is one of the most important techniques among various methods that createsevere plastic deformation in the production of bulk materials with nano/ultrafine grained microstructures. Since the driving force in deforming the workpiece in HPT is surface friction, understanding of the frictioneffect is critical for successful application of HPT. In this study, the friction effect in HPT was analyzed usingthe finite element method. The distribution of effective strain on the contact surface of the HPT samplesunder different friction conditions was investigated. The friction force influenced the effective strain morein the middle and edge regions than in the central region. The condition for the minimum friction factor thatcould achieve a sticking condition between the surfaces of the dies, and the samples in the middle and edgeregions, was investigated. There was a critical friction coefficient in which the effective strain varies sharplywith an increasing friction coefficient.
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