国外焊管第46卷第3期2023年3月Vol.46No.3Mar.2023HANGUAN焊管WELDEDPIPEANDTUBE低碳结构钢的氢脆行为研究闫光龙1，罗刚1，2，黄蔚莉1，2，符利兵1，2，郭克星1编译（1.宝鸡石油钢管有限责任公司，陕西宝鸡721008；2.中油国家石油天然气管材工程技术研究中心有限公司，西安710018）摘要：采用宏观、微观、纳米等手段，开展低碳钢在酸性环境中氢诱导作用对其力学性能影响进行研究。从研究结果可以看出，氢浓度和腐蚀扩展速率存在一定关系，低碳钢暴露于富氢酸性环境28天后，体积弹性模量显著降低。通过微观结构分析，发现氢渗透引起的大晶粒的变形、裂纹和氢鼓包是性能下降的主要原因。此外，通过在不同时间对试样的不同区域进行纳米压痕，确定了氢对晶粒纳米弹性和纳米硬度性能的影响。在宏观、微观和纳米层面上对受到氢损伤钢的力学性能的进一步研究，将对低碳结构钢的维护和使用寿命预测提供一种新途径。关键词：低碳结构钢；氢脆；弹性模量；纳米力学性能中图分类号：TG174.2文献标识码：ADOI:10.19291/j.cnki.1001-3938.2023.03.010StudyonHydrogenEmbrittlementBehaviorofLowCarbonStructuralSteelTranslatedbyYANGuanglong1,LUOGang1,2,HUANGWeili1,2,FULibing1,2,GUOKexing1(1.BaojiPetroleumSteelPipeCo.,Ltd.,Baoji721008,Shaanxi,China;2.ChineseNationalEngineeringResearchCenterforPetroleumandNaturalGasTubularGoodsCo.,Ltd.,Xi'an710018,China)Abstract:Theinfluencefactorsofthemechanicalpropertiesoflowcarbonsteelinducedbyhydrogenintheacidenvironmentrichinhydrogenbythemacro,microandnanomeanswerestudied.Itcanbeseenfromtheresearchresultsthatthereisacertainrelationshipbetweenhydrogenconcentrationandcorrosionpropagation.After28daysofexposuretohydrogenrichacidicenvironment,bulkelasticmodulusoflowcarbonsteeldecreasedsignificantly.Throughmicrostructureanalysis,itisfoundthatthedeformation,crackandhydrogenbulgeoflargegrainscausedbyhydrogenpermeationarethemainreasonsfortheperformancedegradation.Inaddition,theeffectofhydrogenonthenanoelasticityandnanohardnessofthegrainwasdeterminedbynanoindentationondifferentregionsofthesampleatdifferenttimes.Furtherresearchonthemechanicalpropertiesofsteelssubjectedtohydrogendamageatmacro,microandnanolevelswillprovideanewwaytopredict...
