| 2205双相不锈钢氢致开裂行为的试验分析与模型预测 |
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| 引用本文： | 陶平,赵晨宇,巩建鸣.2205双相不锈钢氢致开裂行为的试验分析与模型预测[J].压力容器,2022(1):9-18. |
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| 作者姓名： | 陶平 赵晨宇 巩建鸣 |
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| 作者单位： | 1.南京工业大学机械与动力工程学院;2.江苏省极端承压装备设计与制造重点实验室 |
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| 基金项目： | 江苏省普通高校研究生科研创新计划项目(KYCX18_1093)。 |
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| 摘 要： | 开展了2205双相不锈钢(Duplex stainless steel,DSS)氢致开裂(Hydrogen assisted cracking,HAC)行为的研究,考察了组织形态对2205双相不锈钢中氢致裂纹萌生和扩展的影响.结果表明,横向组织中的氢致裂纹扩展的长度比纵向组织中的裂纹更明显,裂纹优先萌生的位置在铁素体相...
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| 关 键 词： | 双相不锈钢 氢扩散 氢致开裂 内聚力 |
Experimental analysis and model prediction of the hydrogen assisted cracking behavior of 2205 duplex stainless steel |
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| TAO Ping,ZHAO Chenyu,GONG Jianming.Experimental analysis and model prediction of the hydrogen assisted cracking behavior of 2205 duplex stainless steel[J].Pressure Vessel Technology,2022(1):9-18. |
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| Authors: | TAO Ping ZHAO Chenyu GONG Jianming |
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| Affiliation: | (School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China;Jiangsu Key Lab of Design and Manufacture of Extreme Pressure Equipment,Nanjing 211816,China) |
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| Abstract: | The hydrogen assisted cracking(HAC)behavior of 2205 duplex stainless steel(DSS)was studied,and the effects of microstructure morphologies on initiation and propagation of the hydrogen assisted cracks in 2205 DSS were investigated.Experimental results show that the hydrogen-assisted crack propagation in the transverse microstructure is more obvious than that in the longitudinal microstructure and the preferential location of crack initiation is in ferrite.In addition,based on the hydrogen concentration-dependent cohesive zone model,the hydrogen-assisted cracking phenomenon of DSS was predicted and analyzed,and the HAC finite element analysis model including dual-phase microstructure was established.The numerically predicted results were in good agreement with experimental results.Under the condition that the grain sizes in the series phase microstructure morphology and austenitic phase decrease,the concentration of hydrogen entering the material decreases,which suppressed the hydrogen assisted crack propagation to a certain degree. |
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| Keywords: | duplex stainless steel hydrogen diffusion hydrogen assisted cracking cohesion |
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