Radiation-induced segregation at grain boundaries in AL-6XN stainless steels irradiated by hydrogen ions

被引：1

作者：

Long, Yunxiang ^{[1
,2
]}

Zheng, Zhongcheng ^{[1
,2
,3
]}

Guo, Liping ^{[1
,2
]}

Zhang, Weiping ^{[1
,2
]}

Shen, Zhenyu ^{[1
,2
]}

Tang, Rui ^{[4
]}

机构：

[1] Wuhan Univ, Hubei Nucl Solid Phys Key Lab, Key Lab Artificial Micro & Nanostruct, Minist Educ, Wuhan 430072, Hubei, Peoples R China

[2] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China

[3] Res Inst Nucl Power Operat, Wuhan 430000, Hubei, Peoples R China

[4] Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610041, Sichuan, Peoples R China

来源：

RADIATION PHYSICS AND CHEMISTRY | 2018年 / 145卷

基金：

对外科技合作项目（国际科技项目）; 中国国家自然科学基金;

关键词：

Austenitic stainless steel; Radiation-induced segregation; Hydrogen; Grain boundary; STRESS-CORROSION CRACKING; CR DEPLETION PROFILES; ELECTRON-IRRADIATION; HEAT-TREATMENTS; NI ALLOYS; PRECIPITATION; TEMPERATURE; RETENTION; EVOLUTION; HELIUM;

D O I：

10.1016/j.radphyschem.2017.10.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of high concentration of hydrogen on the segregation of radiation-induced segregation (RIS) in AL-6XN stainless steels has been investigated by transmission electron microscopy (TEM) with energy-dispersive X-ray spectroscopy. Specimens were irradiated with 100 keV H-2(+) ions from 1 dpa to 5 dpa at 380 degrees C to investigated the dose dependence of grain boundary RIS. A specimen was irradiated to 5 dpa at 290 degrees C to study the effect of irradiation temperature. The trends of Cr depletion and Ni enrichment with irradiation dose is similar to that of other austenitic steels reported in the literatures, but the higher concentration of hydrogen made the RIS profile wider. An abnormal phenomenon that the degree of RIS increased with decreasing irradiation temperature was found, indicating that with the retention of hydrogen in the steels, temperature dependence of RIS is dominated by the quantity of retained hydrogen, rather than by thermal segregation processes.

引用

页码：116 / 121

页数：6

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