Effects of stress on radiation hardening and microstructural evolution in A533B steel

被引：19
作者：
Fujii, K. [1 ]
Fukuya, K. [1 ]
Kasada, R. [2 ]
Kimura, A. [2 ]
Ohkubo, T. [3 ]
机构：
[1] Inst Nucl Safety Syst Inc, Mihama, Fukui 9191205, Japan
[2] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan
[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
JOURNAL OF NUCLEAR MATERIALS | 2010年 / 407卷 / 03期
关键词：
TYPE-316; STAINLESS-STEEL; IRRADIATION CREEP; ELECTRON-IRRADIATION; REACTOR;
D O I：
10.1016/j.jnucmat.2010.09.055
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Bent specimens of A533B steel (0.16 wt% Cu) were irradiated at 290 degrees C to 1 dpa with 6.4 MeV Fe(3+) ions. Calculated tensile stresses at the irradiated surface were set to 0, 250, 500 and 750 MPa. The specimens were subjected to hardness measurements, transmission electron microscopy (TEM) observations and three-dimensional atom probe (3DAP) analysis. The radiation-induced hardening decreased with increasing stress to 500 MPa which was near the yield strength. TEM and 3DAP results showed that well-defined dislocation loops and solute clusters were formed. The diameter of dislocation loops increased and the number density decreased when the stress was applied, whereas the diameter and number density of solute clusters decreased. The hardening was mainly attributed to solute cluster formation. Application of tensile stress would control hardening by suppressing the solute cluster nucleation and growth. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：151 / 156
页数：6
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