Crystal plasticity modelling and HR-DIC measurement of slip activation and strain localization in single and oligo-crystal Ni alloys under fatigue

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Crystal plasticity modelling and HR-DIC measurement of slip activation and strain localization in single and oligo-crystal Ni alloys under fatigue

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作者：Yongjun Guan^a ; Bo Chen^b ; Jinwen Zou^a ; T. Ben Britton^b ; Jun Jiang^b ; ^c ; Fionn P.E. Dunne^b ; ^c ; ^{fionn.dunne@imperial.ac.uk" class="auth_mail" title="E-mail the corresponding author}
关键词：Nickel alloys ; Single crystals ; Polycrystals ; Crystal plasticity ; Slip localization ; Fatigue
刊名：International Journal of Plasticity
出版年：2017
出版时间：January 2017
年：2017
卷：88
期：Complete
页码：70-88
全文大小：6236 K

文摘

•: Single and multiple slip activation and heterogeneity in single and oligocrystal Ni fatigue identified.
•: HR-DIC measurements quantify slip heterogeneity and localization in single and oligocrystal Ni fatigue.
•: Crystal plasticity models replicate single and oligocrystals in bend fatigue loading.
•: Unconstrained (single crystal) and constrained (grain boundary) effects quantified.
•: Grain boundaries and crystallographic orientation combinations provide constraint leading to preferential fatigue hotspots.

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