| 1300 MPa High Strength Steel for Bolt with Superior Delayed Fracture Resistance |
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| 引用本文： | HUI Wei jun 1,DONG Han 1,WENG Yu qing 2,CHEN Si lian 1,WANG Mao qiu 1 (1 Central Iron & Steel Research Institute,Beijing 100081,China, 2 Chinese Society for Metals,Beijing 100711,China). 1300 MPa High Strength Steel for Bolt with Superior Delayed Fracture Resistance[J]. 钢铁研究学报(英文版), 2002, 9(1): 40-45 |
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| 作者姓名： | HUI Wei jun 1 DONG Han 1 WENG Yu qing 2 CHEN Si lian 1 WANG Mao qiu 1 (1 Central Iron & Steel Research Institute Beijing 100081 China 2 Chinese Society for Metals Beijing 100711 China) |
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| 作者单位： | 1 Central Iron & Steel Research Institute，Beijing 100081，China; 2 Chinese Society for Metals，Beijing 100711，China |
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| 基金项目： | NationalKeyFundamentalResearchProject (G1 9980 61 50 3) |
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| 摘 要： | Ｗｉｔｈｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｍｏｄｅｒｎｉｎｄｕｓｔｒｙ ,ｔｈｅｒｅｉｓａｉｎｃｒｅａｓｉｎｇｄｅｍａｎｄｆｏｒｈｉｇｈｓｔｒｅｎｇｔｈｓｔｅｅｌｓｗｉｔｈａｔｅｎｓｉｌｅｓｔｒｅｎｇｔｈｅｘｃｅｅｄｉｎｇ 12 0 0ＭＰａｔｏｂｅｕｓｅｄｆｏｒｈｉｇｈｅｒｓｔｒｅｎｇｔｈｂｏｌｔｓｉｎｔｈｅｃｏｎｓｔｒｕｃｔｉｏｎｉｎ ｄｕｓｔｒｙ ,ａｕｔｏｍｏｂｉｌｅ ｐａｒｔｓ ,ｌｏｎｇ ｓｐａｎｓｕｓｐｅｎｓｉｏｎｂｒｉｄｇｅｓ,ａｎｄｓｏｏｎ[1] .Ｈｏｗｅｖｅｒ ,ｆｏｒｑｕｅｎｃｈｅｄａｎｄｔｅｍｐ…
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1300 MPa High Strength Steel for Bolt with Superior Delayed Fracture Resistance |
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| HUI Wei-jun,DONG Han,WENG Yu-qing,CHEN Si-lian,WANG Mao-qiu. 1300 MPa High Strength Steel for Bolt with Superior Delayed Fracture Resistance[J]. Journal of Iron and Steel Research, 2002, 9(1): 40-45 |
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| Authors: | HUI Wei-jun DONG Han WENG Yu-qing CHEN Si-lian WANG Mao-qiu |
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| Affiliation: | 1. Central Iron & Steel Research Institute, Beijing 100081, China
2. Chinese Society for Metals, Beijing 100711, China |
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| Abstract: | By the increase in Mo content, the addition of microalloying elements V and Nb and by reducing the contents of Mn, P and S based on the composition of steel 42CrMo, we have developed a 1?300 MPa grade high strength steel (ADF1) for bolts. The sustained load bending test, sustained load tensile test and stress corrosion cracking test have been carried out to evaluate the delayed fracture resistance of steel ADF1 and commercial steel 42CrMo. The results showed that steel ADF1 has superior delayed fracture resistance to that of 42CrMo steel. It's concluded that the superior delayed fracture resistance of ADF1 is mainly due to the increase of tempering temperature, fine homogeneously distributed MC carbide and fine prior austenite grain size. |
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| Keywords: | high strength steel bolt steel delayed fracture hydrogen embrittlement stress corrosion |
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