Influence of machining parameters on surface roughness and susceptibility to hydrogen embrittlement of austenitic stainless steels |
| |
| Affiliation: | 1. Pontifical Catholic University of Minas Gerais, Department of Mechanical Engineering, Av. Dom José Gaspar 500, 30535-901, Belo Horizonte, (MG), Brazil;2. Federal Center for Technological Education of Minas Gerais, Av. Amazonas 5253, 30421-169, Belo Horizonte, (MG), Brazil;1. Institute of Process Equipment, Zhejiang University, Hangzhou 310027, PR China;2. School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, PR China;1. Department of Materials Science and Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan;2. Department of Materials Science and Engineering, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;1. College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 211816, China;2. College of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou 221116, 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;1. Institute of Nuclear Energy Research (INER), Taoyuan 325, Taiwan;2. Institute of Materials Engineering, National Taiwan Ocean University, Keelung 202, Taiwan;3. Department of Material Science and Engineering, National Taiwan University, Taipei 106, Taiwan |
| |
| Abstract: | In the present work, an investigation on the susceptibility to hydrogen embrittlement of AISI 304 and 310 austenitic stainless steels was performed. The hydrogen embrittlement process leads to degradation of mechanical properties and can be accelerated by the presence of surface defects combined with elevated surface hardness. Tensile test specimens of the selected materials were machined by turning with different cutting parameters in order to create variations in surface finish conditions. The samples thus prepared were submitted to tensile tests before and after hydrogen permeation by cathodic charging. Regarding the AISI 304 steel, it was possible to notice that the presence of strain-induced martensite on the material surface led to severe hydrogen embrittlement. In the case of the AISI 310 steel, due to its higher nickel amount, no martensite formation could be detected, and this steel was found to be less susceptible to embrittlement in the tested conditions. |
| |
| Keywords: | Hydrogen embrittlement Strainless steels Mechanical properties Surface roughness Turning |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
