Coupled texture and non-Schmid effects on yield surfaces of body-centered cubic polycrystals predicted by a crystal plasticity finite element approach

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• 作者：Daniel J. Savage^a ; Irene J. Beyerlein^b ; Marko Knezevic^a ; ^{marko.knezevic@unh.edu}
• 关键词：Crystal plasticity ; Texture ; Tantalum ; Molybdenum ; Tungsten ; Non-Schmid effects
• 刊名：International Journal of Solids and Structures
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：109
• 期：Complete
• 页码：22-32
• 全文大小：2415 K
• 卷排序：109

文摘

A crystal plasticity finite element model incorporating non-Schmid effects is developed. A finite element cell procedure is developed for calculating polycrystalline yield surfaces. The role of non-Schmid terms on the shape of the polycrystalline yield surface is revealed. Non-Schmid effects can enhance or suppress the effects of texture on plastic anisotropy.