کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5145991 1497344 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of temperature on hydrogen embrittlement susceptibility of alloy 718 in Light Water Reactor environment
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effect of temperature on hydrogen embrittlement susceptibility of alloy 718 in Light Water Reactor environment
چکیده انگلیسی
A 718 superalloy, presenting a standard microstructure, was mechanically tested under uniaxial tensile loading at 80 °C and 300 °C in Light Water Reactor environment after an exposure at 300 °C for 200 h. Hydrogen embrittlement mechanism was clearly observed. In order to identify the most influent metallurgical parameters on hydrogen embrittlement, three “model” microstructures were synthesized to test the efficiency of carbides, δ, γ′ and γ” precipitates to trap hydrogen at different temperatures. Results showed that γ′ and γ” played the major role on the hydrogen embrittlement susceptibility of the alloy even though carbides and δ precipitates could also act as hydrogen traps and influence the final rupture mechanism. Results also characterized the influence of temperature on the fracture modes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 33, 17 August 2017, Pages 21371-21378
نویسندگان
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