http://scholars.ntou.edu.tw/handle/123456789/4708
標題: | Effect of Low-Temperature Sensitization on Hydrogen Embrittlement of 301 Stainless Steel | 作者: | Chieh Yu Ren-Kae Shiue Chun Chen Leu-Wen Tsay |
關鍵字: | stainless steel;hydrogen embrittlement;hydrogen charging;G and σ phases;α′ martensite | 公開日期: | 二月-2017 | 卷: | 7 | 期: | 2 | 起(迄)頁: | 58 | 來源出版物: | Metals | 摘要: | 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′ 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′ 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′-martensite and M23C6 carbides were not observed in the as-rolled and 300 °C-aged specimens. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/4708 | ISSN: | 2075-4701 | DOI: | 10.3390/met7020058 |
顯示於: | 光電與材料科技學系 |
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