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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
- 2019.1
- 수록면
- 159 - 167 (9page)
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초록· 키워드
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In this study, the effects of plate-shaped precipitates on the mechanical properties and plastic anisotropy of Al–Cu alloysduring plane strain loading were investigated. The modified aging kinetics model of Shercliff and Ashby was used to obtainthe precipitate size and volume fraction after different schedules of aging treatment. An explicit term, named as weightingfunction was obtained based on the elastic inclusion model for the directional dependency of strengthening developed bynon-shearable plate shape precipitates during plane strain compression. This orientation dependent term was used along withthe precipitate features obtained from the kinetics model, and dislocation density varying during deformation, to calculatethe slip system strength. Also, a Kocks–Mecking type dislocation evolution model of single phase materials was modifiedto assess the anisotropic influence of non-shearable precipitates on the flow behavior of age hardenable alloy. The proposedmodel is validated by comparing the modeling results for precipitates size, precipitates volume fraction and stress–straincurves under different aging conditions, with that of experiments. It is found that the presence of non-shearable precipitatescan reduce crystallography anisotropy, in fact, the weak orientations are strengthened more by precipitates than hard orientations. The developed model can be applied to single crystals and also textured polycrystals.
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