Tensile Properties and Fracture Characteristics of ECAP-Processed Al and Al-Cu Alloys

被引：23
|
作者：
El Aal, Mohamed Ibrahim Abd [1 ,2 ]
El Mahallawy, Nahed [3 ]
Shehata, Farouk A. [2 ]
El Hameed, Mohamed Abd [2 ]
Yoon, Eun Yoo [1 ]
Lee, Jung Hwan [4 ]
Kim, Hyoung Seop [1 ]
机构：
[1] POSTECH Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang Si 790784, Gyeongbuk, South Korea
[2] Zagazig Univ, Fac Engn, Mech Design & Prod Dept, Zagazig, Egypt
[3] German Univ, Fac Engn & Mat Sci, Cairo, Egypt
[4] KIMS, Changwon Si 641831, Gyeongnam, South Korea
来源：
METALS AND MATERIALS INTERNATIONAL | 2010年 / 16卷 / 05期
关键词：
equal channel angular pressing; severe plastic deformation; Al; Al-Cu alloy; fracture mode; DYNAMIC DEFORMATION-BEHAVIOR; MECHANICAL-PROPERTIES; NANOSTRUCTURED MATERIALS; STRAIN-RATE; MICROSTRUCTURE; EVOLUTION; COPPER;
D O I：
10.1007/s12540-010-1003-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present paper, billets of pure Al, and cast-homogenized Al-2 wt.%, 3 wt.%, and 5 wt.% Cu alloys were successfully processed by equal channel angular pressing (ECAP) up to 10 passes without fracture at room temperature using a die with a channel angle of 110 degrees. Giant strains imposed on workpieces lead to extreme dislocation densities, microstructural refinement, and finally ultrafine grained materials. Tensile tests were employed to examine the fracture modes and fracture surface morphologies of the ECAP-processed Al and Al-Cu alloy samples. In particular, the effects of the number of ECAP passes and the Cu content were investigated.
引用
收藏
页码：709 / 716
页数：8
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