文章编号院1000谣7466(2023)05谣0029谣04收稿日期院2023-03-30作者简介院廖娇(1988-)，男，江西新余人，工程师，硕士，从事特种设备检验检测相关工作。表面状态对N06625镍基合金去应力热处理后腐蚀性能的影响廖娇1,2渊1.上海市特种设备监督检验技术研究院袁上海200062曰2.上海压力管道智能检测工程技术研究中心袁上海200062冤摘要院按照ASTMG28要2002渊Reapproved2015冤叶StandardTestMethodforDe鄄tectingSusceptibilitytoIntergranularCorrosioninWrought,Nickel-rich,Chromium-bearingAlloys曳中方法A对供货态和表面处理后SB-444N06625镍基合金材料进行腐蚀试验袁对腐蚀试验后的材料进行取样和金相检测及对比分析遥研究结果表明袁供货状态材料表面的保护油脂会在热处理时燃烧并分解为碳及碳化物袁造成试样渗碳现象袁C元素含量的增多直接导致Cr元素与C元素在镍基合金材料近表面生成Cr23C6并析出袁最终造成合金材料耐腐蚀性的下降遥而对合金表面先进行脱脂处理袁然后进行同样的热处理袁试样的腐蚀性能只有轻微下降袁可以满足使用要求遥关键词院镍基合金曰热处理曰表面状态曰腐蚀性能曰影响中图分类号院TQ050.4曰TG156文献标志码院Adoi:10.3969/j.issn.1000-7466.2023.05.005EffectofSurfaceStateonCorrosionResistanceofN06625Nickel-basedAlloyafterStressReliefHeatTreatmentLIAOJiao1,2渊1.SSEI袁Shanghai200062袁China曰2.ShanghaiEngineeringResearchCenterofPressurePipelineIntelligentInspection袁Shanghai200062袁China冤Abstract:TheeffectofcorrosionresistanceforSB-444N06625withdifferentalloysurfacestatesafterstress-reliefheat-treatmentwasstudiedbymethodAofASTMG28要2002渊Reapproved2015冤野StandardTestMethodforDetectingSusceptibilitytoIntergranularCorrosioninWrought,Nickel-rich,Chromium-bearingAlloys冶.Bycomparingtothecorrosionresistanceinthesupplystatesandotherdifferentsurfacestates,thesurfacetreatmentstatesofmaterialsbeforestressreliefheattreatmentcanberecommended.Theresultswasshownthatthegreaseinthesurface(withoutsurfacetreatment)wasburnedtoresolvetothecarbideandcarburizedinthesurfaceduringthestressreliefheattreatment,theCrelementinthealloywascombinedwiththeincreasedCelementtoproducetheprecipitatesofCr23C6inthealloygrainboundary,sothatthecorrosionresistanceofalloy...
