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Title: Correlation between Fatigue Crack Growth Behavior and Fracture Surface Roughness on Cold-Rolled Austenitic Stainless Steels in Gaseous Hydrogen
Authors: Tai-Cheng Chen
Sheng-Tsan Chen
Leu-Wen Tsay
Ren-Kae Shiue
Contributors: 國立臺灣海洋大學:材料工程研究所
Keywords: austenitic stainless steel
cold rolling
strain-induced martensite
fatigue crack growth
hydrogen embrittlement
fracture surface roughness
Date: 2018-03
Issue Date: 2018-10-22T08:00:48Z
Publisher: Metals
Abstract: Abstract: 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.
Relation: 8(4)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50741
Appears in Collections:[材料工程研究所] 期刊論文

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