Effects of Ti element on the microstructural stability of 9Cr-WVTiN reduced activation martensitic steel under ion irradiation

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作者：

Key Laboratory of Artificial Micro- and Nano-Structures, Ministry of Education, Wuhan University, Wuhan 430072, China ^{[1
]}

不详 ^{[2
]}

不详 ^{[3
]}

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来源：

J Nucl Mater | / 1-3卷 / 37-40期

基金：

加拿大自然科学与工程研究理事会; 中国国家自然科学基金;

关键词：

Titanium compounds - Iron compounds - Martensitic stainless steel - Vanadium alloys - Carbides - Titanium alloys - Chromium compounds - High resolution transmission electron microscopy - Chemical activation - Chromium alloys;

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摘要：

Microstructure of 9Cr-WVTiN reduced-activation martensitic steels with two different Ti concentrations irradiated with Fe+, He+ and H+ at 300 °C was studied with transmission electron microscopy. Small dislocation loops were observed in the irradiated steels. The mean size and number density of dislocation loops decreased with the increase of Ti concentration. The segregation of Cr and Fe in carbides was observed in both irradiated steels, and the enrichment of Cr and depletion of Fe were more severe in the low Ti-concentration 9Cr-WVTiN steel. © 2014 Elsevier B.V. All rights reserved.

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