On strain-induced dissolution of θ′ and θ particles in Al–Cu binary alloy during equal channel angular pressing

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• 作者：Zhiyi Liu^a ; ^b ; ^{liuzhiyi335@163.com} ; ^{liuzhiyi@mail.csu.edu.cn} ; Song Bai^a ; ^b ; Xuanwei Zhou^a ; ^b ; Yanxia Gu^a ; ^b
• 关键词：Dissolution ; Second phase ; Aluminium alloy ; ECAP
• 刊名：Materials Science and Engineering: A
• 出版年：2011
• 出版时间：15 March 2011
• 年：2011
• 卷：528
• 期：6
• 页码：2217-2222
• 全文大小：1214 K

文摘

The deformable θ′ particle in Al–Cu binary alloy was found to dissolve more rapidly than the indeformable θ particle due to an additional increasing strain energy accumulated in the deformed θ′ plate as well as an increasing interface energy led by the formation of sub-boundary in the θ′ plate and fragmentation of the particle during equal channel angular pressing (ECAP). The critical radius and the free energy barrier for the strain-induced dissolution of both θ′ and θ particles were calculated.