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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51260

Title: Effect of Low-Temperature Sensitization on Hydrogen Embrittlement of 301 Stainless Steel
Authors: Chieh Yu
Ren-Kae Shiue
Chun Chen
Leu-Wen Tsay
Contributors: 國立臺灣海洋大學:光電與材料科技學士學位學程(學系)
Keywords: stainless steel
hydrogen embrittlement
hydrogen charging
G and σ phases
α 0 martensite
Date: 2017-02
Issue Date: 2018-11-20T03:29:31Z
Publisher: Metals
Abstract: Abstract: The effect of metastable austenite on the hydrogen embrittlement (HE) of cold-rolled
(30% reduction in thickness) 301 stainless steel (SS) was investigated. Cold-rolled (CR) specimens
were hydrogen-charged in an autoclave at 300 or 450 ◦C under a pressure of 10 MPa for 160 h
before tensile tests. Both ordinary and notched tensile tests were performed in air to measure the
tensile properties of the non-charged and charged specimens. The results indicated that cold rolling
caused the transformation of austenite into α
0 and ε-martensite in the 301 SS. Aging at 450 ◦C
enhanced the precipitation of M23C6 carbides, G, and σ phases in the cold-rolled specimen. In
addition, the formation of α
0 martensite and M23C6 carbides along the grain boundaries increased
the HE susceptibility and low-temperature sensitization of the 450 ◦C-aged 301 SS. In contrast,
the grain boundary α
0
-martensite and M23C6 carbides were not observed in the as-rolled and
300 ◦C-aged specimens.
Relation: 7(2) pp.58
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51260
Appears in Collections:[光電科學研究所] 期刊論文

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