|
|
|
| Improving hydrogen embrittlement resistance of a modified press hardening steel by introducing retained austenite as hydrogen trap |
| Wei Ding1,2, Kai Yang1,2, Yu Gong1,2, Li Wang3, Ji-yao Hong3, Wei Li1,2, Xue-jun Jin1,2 |
| 1 Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, China 2 Institute of Advanced Steels and Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China 3 State Key Laboratory of Development and Application Technology of Automotive Steels, BaoSteel Research Institute, Shanghai 201900, China |
|
|
|
|
Abstract The effect of retained austenite (RA) with higher mechanical stability on hydrogen embrittlement resistance of a modified 22MnB5 (C 0.22, Si 0.8, Mn 1.5, B 0.002, Fe balance, in wt.%) press hardening steel (PHS) has been studied. One-step quenching and partitioning (Q&P) treatment was applied to PHS, and around 6 vol.% ultra-fine RA was obtained. The ultra-fine RA was found to act as stronger hydrogen trap than dislocations and grain boundaries in martensitic matrix and can decrease the apparent diffusion coefficient of hydrogen from 5.97 9 10–7 to 3.83 9 10–7 cm2 s-1, which was verified by the combination of thermal desorption spectroscopy analysis and hydrogen permeation test. The higher mechanical stability of the ultrafine RA assures enough stability of the hydrogen trap, which results in better hydrogen embrittlement resistance in Q&P-treated PHS than the conventional directly quenched PHS.
|
|
|
|
|
|
| Cite this article: |
|
Wei Ding,Kai Yang,Yu Gong, et al. Improving hydrogen embrittlement resistance of a modified press hardening steel by introducing retained austenite as hydrogen trap[J]. Journal of Iron and Steel Research International, 2022, 29(11): 1864-1872.
|
|
|
|
| [1] |
Peng-fei Gao, Ju-hua Liang, Wei-jian Chen, Feng Li, Zheng-zhi Zhao. Prediction and evaluation of optimum quenching temperature and microstructure in a 1300 MPa ultra-high-strength Q&P steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(2): 307-315. |
| [2] |
Yi Luo, Wei Li, Peng-wei Zhou, Yuan-tao Xu, Hui-yong Pang, Ning Zhong, Hui-sheng Jiao, Xue-jun Jin. Effect of tempering on carbides and hydrogen embrittlement in E690 high strength marine structural steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(10): 1669-1682. |
| [3] |
Ming-ming Wang, Xiu-hua Gao, Li-ying Song, Cheng-lin Zhu, Lin-xiu Du, Raja Devesh Kumar Misra. Hydrogen trapping and electrochemical corrosion behavior of V–N microalloyed X80 pipeline steels consisting of acicular ferrite and polygonal ferrite[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(10): 1683-1693. |
| [4] |
Shuai Tian, Zhen-bao Liu, Ren-li Fu, Xiao-hui Wang, Jian-xiong Liang. Investigation of stress corrosion cracking behavior and mechanism analysis of a 1900 MPa-grade ultra-high-strength stainless steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(09): 1474-1484. |
| [5] |
Zhi-peng Shen, Wei Fu, Ling-rui Kong, Han-han Ma, Xiao-hua He, Xiao-chun Yu, Chang-yu Zhou. Effect of isothermal temper embrittlement and subsequent hydrogen embrittlement on tensile properties of 2.25Cr–1Mo–0.25V base metal and welded metal[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(11): 1426-1438. |
| [6] |
Jia-cheng Zhang, Tuo Zhang, Yi-tao Yang. Microstructure and properties evolution of Nb-bearing medium Cr wear-resistant cast steel during heat treatment[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(06): 739-751. |
|
|
|
|
2022, Vol. 29 
