TY - JOUR
T1 - Effect of stress on radiation-induced hardening of A533B and Fe-Mn model alloys
AU - Watanabe, H.
AU - Hiragane, A.
AU - Shin, S.
AU - Yoshida, N.
AU - Kamada, Y.
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - In this study, a small tensile test machine was inserted in the beam line of a tandem-type accelerator. After 2.4 MeV Fe2+ ion irradiation, the microstructure and hardness changes of the specimens with and without applied stress were studied. Without stress, the formation of small interstitial-type dislocation loops was prominent in the matrix and also in the vicinity of dislocations in the Fe-1.4 wt.%Mn alloy. At room temperature, radiation-induced hardening was more prominent in samples with stress than in samples without stress. However, at 563 K, the effect of stress on hardness changes was minor. TEM observations showed that the applied stress reduced loop nucleation and enhanced loop growth to a degree corresponding to the microstructure at higher-temperature irradiation. This study revealed that the formation of interstitial-type dislocation loops enhanced by Mn addition was essential for irradiation hardening of these samples both with and without applied stress at higher dose levels.
AB - In this study, a small tensile test machine was inserted in the beam line of a tandem-type accelerator. After 2.4 MeV Fe2+ ion irradiation, the microstructure and hardness changes of the specimens with and without applied stress were studied. Without stress, the formation of small interstitial-type dislocation loops was prominent in the matrix and also in the vicinity of dislocations in the Fe-1.4 wt.%Mn alloy. At room temperature, radiation-induced hardening was more prominent in samples with stress than in samples without stress. However, at 563 K, the effect of stress on hardness changes was minor. TEM observations showed that the applied stress reduced loop nucleation and enhanced loop growth to a degree corresponding to the microstructure at higher-temperature irradiation. This study revealed that the formation of interstitial-type dislocation loops enhanced by Mn addition was essential for irradiation hardening of these samples both with and without applied stress at higher dose levels.
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U2 - 10.1016/j.jnucmat.2013.04.029
DO - 10.1016/j.jnucmat.2013.04.029
M3 - Article
AN - SCOPUS:84884909955
VL - 442
SP - S776-S781
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3 SUPPL.1
ER -