Evaluation of stress corrosion resistance properties of the modified 15CrMoR(H) in H2S environment - 文章详情页

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To　evaluate　the　hydrogen　resistant　properties　of　the　15CrMoR(H)　with　a　new　smelting　process,　according　to　NACE　and　National　Standards,　three　tests　including　NACE　standard　tensile　test,　NACE　standard　bent-beam　test　and　hydrogen　induced　cracking　test　were　executed　in　saturated　hydrogen　sulfide　(H2S)　environment.　Stress-life　mathematical　model　of　this　material　was　given　by　analyzing　and　fitting　the　results　of　tensile　test.　Test　results　show　that　the　threshold　σth　of　tensile　test　is　0.7ReL(252　MPa);　the　threshold　nominal　stress　SC　of　bent-beam　is　higher　than　4.5ReL　(1　620　MPa);　and　for　HIC　test,　the　crack　length　rate　(CLR)　is　4.40%,　the　crack　thickness　rate　(CTR)　is　0.87%　and　the　crack　sensitive　rate　(CSR)　is　0.04%.　Compared　with　the　EFC　standard,　the　safety　margin　of　HIC　test　is　3.4,　3.4　and　37.5　times,　respectively.　All　the　experimental　results　show　that　the　new　15CrMoR(H)　material　has　excellent　H2S　environmental　cracking　resistance　properties.　©,　2015,　Beijing　University　of　Technology.　All　right　reserved.

关键词：

15CrMoR(H) materials; H2S environment; Hydrogen induced cracking; Stress corrosion

作者机构：

[ 1 ] [Li, X.-Y.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Wu, M.-Y.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Wang, J.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Zhang, Y.-L.]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Li, S.-R.]Wuhan Iron and Steel (Group) Corp., Wuhan, 430083, China
[ 6 ] [Liu, W.-B.]Wuhan Iron and Steel (Group) Corp., Wuhan, 430083, China

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