Work hardening characteristics of gamma-ray irradiated Al-5356 alloy

被引：8
作者：
Saad, G. [1 ]
Fayek, S. A. [2 ]
Fawzy, A. [1 ]
Soliman, H. N. [1 ]
Nassr, E. [1 ]
机构：
[1] Ain Shams Univ, Fac Educ, Dept Phys, Cairo, Egypt
[2] Natl Ctr Radiat Res & Technol, Dept Phys, Cairo, Egypt
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 607卷
关键词：
Stress-strain; Strengthening parameters; Irradiation-induced defects; AL-MG ALLOY; STRAIN-RATE; DUCTILE FRACTURE; SERRATED FLOW; GRAIN-SIZE; DEFORMATION; TEMPERATURE; BEHAVIOR; ZR;
D O I：
10.1016/j.msea.2014.03.137
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Effects of gamma-irradiation and deformation temperatures on the hardening behavior of Al-5356 alloy have been investigated by means of stress-strain measurements. Wire samples irradiated with different doses (ranging from 500 to 2000 kGy) were strained at different deformation temperatures T-w (ranging from 303 to 523 K) and a constant strain rate of 1.5 x 10(-3)S(-1). The effect of gamma-irradiation on the work-hardening parameters (WHP): yield stress sigma(y), fracture stress sigma(f), total strain epsilon(T) and work-hardening coefficient chi(P) of the given alloy was studied at the applied deformation temperature range. The obtained results showed that gamma-irradiation exhibited an increase in the WHP of the given alloy while the increase in its deformation temperature showed a reverse effect. The mean activation energy of the deformation process was calculated using an Arrhenius-type relation, and was found to be similar to 80 kJ/mole, which is close to that of grain boundary diffusion in aluminum alloys. (C) 2014 Elsevier B.V. All rights reserved.
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页码：132 / 137
页数：6
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