| 顾超华， 姚彦辰， 赵益明， 马凯， 匡继勇， 张睿明， 刘亚宇， 花争立， 彭文珠.4130X在50 MPa氢环境下的断裂力学性能试验研究[J].轻工机械,2021,39(5):8-13 |
| 4130X在50 MPa氢环境下的断裂力学性能试验研究 |
| Experimental Study on Fracture Mechanical Properties of 4130X in 50 MPa Hydrogen Environment |
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| DOI：10.3969/j.issn.1005 2895.2021.05.002 |
| 中文关键词: 4130X 高压氢脆 疲劳裂纹扩展速率 断裂韧度 |
| 英文关键词:4130X high pressure hydrogen embrittlement fatigue crack growth rate fracture toughness |
| 基金项目:国家重点研发计划（2019 YFB150530）；浙江省重点研发计划项目（2019C01154）；先进能源科学与技术广东省实验室佛山分中心（佛山仙湖实验室）开放基金(XHD2020 004)。 |
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| 中文摘要: |
| 广泛用于大容积无缝高压储氢容器制造的铬钼钢4130X，在高压氢环境下面临着因高压氢脆引起的力学性能劣化现象，对4130X储氢容器的安全运行产生极大威胁。课题组利用研发的高压氢环境材料耐久性试验装置，对4130X在50 MPa氢环境下的疲劳裂纹扩展速率和断裂韧度开展试验研究。结果表明：相比于空气下，4130X在50 MPa氢环境下的疲劳裂纹扩展速率加快了约10~16倍，断裂韧度降低了约71.1%。4130X储氢容器的疲劳设计应考虑高压氢脆对材料断裂力学性能的劣化作用。 |
| 英文摘要: |
| Chromium molybdenum steel 4130X is widely used in the manufacture of large volume seamless high pressure hydrogen storage vessels, however, 4130X may face the deterioration of mechanical properties caused by high pressure hydrogen embrittlement in high pressure hydrogen environment, which is a great threat to the safe operation of 4130X hydrogen storage vessels. The fatigue crack growth rate and fracture toughness of 4130X in 50 MPa hydrogen environment were studied by using the designed high pressure hydrogen environment material durability test device. The results show that the fatigue crack growth rate of 4130X in 50 MPa hydrogen environment is 10-16 times faster than that in air, and the fracture toughness is reduced by 71.1%. The fatigue design of 4130X hydrogen storage vessel should consider the deterioration of high pressure hydrogen embrittlement on the fracture mechanical properties of materials. |
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