Improvement of hydrogen embrittlement resistance of 2205 duplex stainless steel by laser peening |
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| Affiliation: | 1. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China;2. Key Laboratory of CNC Equipment Reliability, Ministry of Education, Jilin University, Changchun 130015, China;3. Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China;4. Department of Mechanical Engineering, Koforidua Technical University, Koforidua KF-981, Ghana;1. Institute of Refrigeration and Cryogenic Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. China Special Equipment Inspection and Research Institute, Beijing, 100029, China;3. College of Petroleum and Chemical, Lanzhou University of Technology, Lanzhou, 730050, China;1. FGBOU VO “South Russian State Polytechnic University (NPI) Named After M.I. Platov”, 346428, Rostov Region, Novocherkassk, Str. Enlightenment, 132, Russia;2. Don Technologies LLC, 164A, St. Mikhailovskaya, Novocherkassk, 346400, Russia;3. DonEnergoMash Innovation and Technology Center LLC, 344000, Rostov-on-Don, Suvorov St., 38a, Office 13, Russia;4. FGBUN “Federal Research Center Southern Scientific Center of the Russian Academy of Sciences” (UNC RAS), 344006, Rostov-on-Don, Pr. Chekhova, 41, Russia;1. Department of Chemical Engineering, College of Engineering, Integrated Engineering Major, Kyung Hee University, Yongin 17104, Republic of Korea;2. Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea;1. Department of Smart Manufacturing Engineering, Graduate School of Engineering, Changwon National University, 20 Changwondaehak-ro, Uichang-gu, Changwon 51140, Republic of Korea;2. Defense Development Team, Hyundai Wia Corp., 154 Jeongdong-ro, Seongsan-gu, Changwon 51537, Republic of Korea;3. Department of Mechanical Engineering, College of Mechatronics, Changwon National University, 20 Changwondaehak-ro, Uichang-gu, Changwon 51140, Republic of Korea;1. Xi''an Key Laboratory of Sustainable Energy Materials Chemistry, Department of Applied Chemistry, School of Chemistry, Xi''an Jiaotong University, Xi''an 710049, China;2. State Key Laboratory of Multiphase Flow in Power Engineering, Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi''an Jiaotong University, Xi''an 710049, China;3. College of Eco-environmental Engineering, Qinghai University, Xi''ning 810016, China |
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| Abstract: | The hydrogen embrittlement (HE) resistance of 2205 duplex stainless steel (DSS) treated with laser peening (LP) with different laser power densities was studied. The results show that LP changes the morphologies and distribution of ferrite phase and austenitic phase, thus changes the path of hydrogen transportation and diffusing. LP-induced grain refinement provides more tortuous grain boundaries that increases the difficulty of hydrogen atoms to penetrate them. The beneficial LP-induced microstructures interacts (e.g. dislocation entanglements, dislocation walls, mechanical twins) and helps to trap the hydrogen atoms, reducing their mobility ability. The hydrogen determination test provides direct evidence that LP reduced the amount of hydrogen penetration into the material. In addition, the tensile fracture exhibits that the average depth of the brittle region was inversely proportional to the laser power density, suggesting that an increase in laser power density can reduce the HE sensitivity of 2205 DSS. |
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| Keywords: | Laser peening Hydrogen embrittlement Duplex stainless steel Microstructure Hydrogen diffusing |
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