Effect of residual hydrogen content on the tensile properties and crack propagation behavior of a type 316 stainless steel |
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| Affiliation: | 1. CAS Key Laboratory of Nuclear Materials and Safety Assessment, IMR (NMSA), Shenyang, 110014, PR China;2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, PR China;1. Institute of Process Equipment, Zhejiang University, Hangzhou, 310027, PR China;2. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, PR China;1. AIST-Kyushu University Hydrogen Materials Laboratory (HydroMate), National Institute of Advanced Industrial Science and Technology (AIST), 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;2. Department of Mechanical Engineering, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan;1. Hydrogen Energy Test and Research Center (HyTReC), 915-1 Tomi, Itoshima-Shi, Fukuoka 819-1133, Japan;2. International Research Center for Hydrogen Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka-shi, Fukuoka 819-0395, Japan;3. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka-shi, Fukuoka 819-0395, Japan;4. Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka-shi, Fukuoka 819-0395, Japan;1. Institute of Material Forming and Control Engineering, Zhejiang University of Technology, Hangzhou 310014, China;2. Institute of Chemical Machinery Engineering, Zhejiang University, Hangzhou 310027, China;1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China;2. Department of Mechanical Manufacturing Engineering, Shanxi Engineering Vocational College, Taiyuan 030009, Shanxi, PR China;3. Instrumental Analysis Center, Taiyuan University of Technology, Taiyuan 030600, PR China;4. The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, PR China;5. Taiyuan Iron & Steel Co., Ltd., Taiyuan 030003, PR China;6. College of Materials Science and Engineering, North University of China, Taiyuan 030051, Shanxi, PR China |
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| Abstract: | The tensile properties and crack propagation rate in a type 316 austenitic stainless steel prepared by vacuum induction melting method with different residual hydrogen contents (1.1–11.5 × 10?6) were systematically investigated in this research work. The room temperature tensile properties were measured under both regular tensile (12 mm/min) and slow tensile (0.01 mm/min) conditions, and the fracture properties of the tensile fractures with both rates were analyzed. It shows that the hydrogen induced plasticity loss of stainless steel strongly depends on the tensile rate. Under regular tensile condition, there is no plastic loss even when the hydrogen content is up to 11.5 × 10?6 while in the slow tensile condition, the plastic loss can be clearly identified rising with the increasing H contents. The fatigue crack propagation rate was tested at room temperature, and the crack growth rate formula (Paris) of the 316 stainless steels with varied H contents were obtained. The fatigue crack propagation rate test shows that the crack growth rate of the 316 stainless steel with 8.0–11.5 × 10?6 hydrogen is significantly higher than that of benchmark steel. |
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| Keywords: | 316 austenitic stainless steel Hydrogen embrittlement Slow strain rate test (SSRT) Fatigue crack propagation rate Relative reduction of area (RRA) |
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