A study on the microstructure and mechanical property of proton irradiated A508-3 steel

Transmission electron microscopy and the nanoindentation technique were employed to study the dislocation loops and hardening induced in proton irradiated A508-3 steel. The A508-3 steel specimens were irradiated to the dose of 0.054, 0.163, 0.271dpa at room temperature (RT), 0.163 pa at 250°C and 0....

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2015-05, Vol.350, p.14-19
Main Authors: Li, Xiao-hong, Lei, Jing, Shu, Guo-gang, Wan, Qiang-mao
Format: Article
Language:English
Subjects:
A508-3 steel
Density
Dislocation loops
Hardening
High strength steels
Irradiation
Irradiation hardening
Mechanical properties
Microstructure
Nanoindentation
Nickel chromium molybdenum steels
Proton irradiation
Steels
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Summary:Transmission electron microscopy and the nanoindentation technique were employed to study the dislocation loops and hardening induced in proton irradiated A508-3 steel. The A508-3 steel specimens were irradiated to the dose of 0.054, 0.163, 0.271dpa at room temperature (RT), 0.163 pa at 250°C and 0.163, 0.271dpa at 290°C. The effect of dose and temperature on the dislocation loops and irradiation hardening was investigated. The results indicated that the dislocation loops were formed in proton irradiated A508-3 steel. The size and number density generally increased with increasing dose at RT. When the irradiation temperature changed from RT to 290°C, the loop size increased and the loop number density decreased. The irradiation hardening increased with dose. The effect of temperature on the irradiation induced hardening was discussed.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2015.03.037