http://scholars.ntou.edu.tw/handle/123456789/4650
標題: | Correlation between Fatigue Crack Growth Behavior and Fracture Surface Roughness on Cold-Rolled Austenitic Stainless Steels in Gaseous Hydrogen | 作者: | Tai-Cheng Chen Sheng-Tsan Chen Leu-Wen Tsay Ren-Kae Shiue |
關鍵字: | austenitic stainless steel;cold rolling;strain-induced martensite;fatigue crack growth;hydrogen embrittlement;fracture surface roughness | 公開日期: | 四月-2018 | 卷: | 8 | 期: | 4 | 起(迄)頁: | 221 | 來源出版物: | Metals | 摘要: | Austenitic stainless steels are often considered candidate materials for use in hydrogen-containing environments because of their low hydrogen embrittlement susceptibility. In this study, the fatigue crack growth behavior of the solution-annealed and cold-rolled 301, 304L, and 310S austenitic stainless steels was characterized in 0.2 MPa gaseous hydrogen to evaluate the hydrogen-assisted fatigue crack growth and correlate the fatigue crack growth rates with the fracture feature or fracture surface roughness. Regardless of the testing conditions, higher fracture surface roughness could be obtained in a higher stress intensity factor (∆K) range and for the counterpart cold-rolled specimen in hydrogen. The accelerated fatigue crack growth of 301 and 304L in hydrogen was accompanied by high fracture surface roughness and was associated with strain-induced martensitic transformation in the plastic zone ahead of the fatigue crack tip. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/4650 | ISSN: | 2075-4701 | DOI: | 10.3390/met8040221 |
顯示於: | 光電與材料科技學系 |
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