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

被引：77

作者：

Liu, Zhiyi ^{[1
,2
]}

Bai, Song ^{[1
,2
]}

Zhou, Xuanwei ^{[1
,2
]}

Gu, Yanxia ^{[1
,2
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[2] Cent S Univ, Minist Educ, Key Lab Nonferrous Met Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 06期

关键词：

Dissolution; Second phase; Aluminium alloy; ECAP; SEVERE PLASTIC-DEFORMATION; CEMENTITE DECOMPOSITION; PEARLITIC STEEL; PRECIPITATION; MICROSTRUCTURE; STRENGTH; ENERGY;

D O I：

10.1016/j.msea.2010.12.060

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The deformable theta' particle in Al-Cu binary alloy was found to dissolve more rapidly than the indeformable theta particle due to an additional increasing strain energy accumulated in the deformed theta' plate as well as an increasing interface energy led by the formation of sub-boundary in the theta' 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 theta' and theta particles were calculated. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：2217 / 2222

页数：6

共 28 条

[1] COMPARISON OF RELATIVE INTERFACIAL ENERGIES OF DISORDERED INTERPHASE (ALPHA-THETA) AND GRAIN (ALPHA-ALPHA) BOUNDARIES AT GRAIN BOUNDARY PRECIPITATES IN AL-4 PERCENT CU DURING GROWTH AND AT EQUILIBRIUM [J].