DOI:10.11973/fsyfh-202302007电渣重熔和合金元素对车轮钢组织和性能的影响杨艳1,赵锦龙2(1.包头铁道职业技术学院铁道机车车辆系,包头014060;2.内蒙古工业大学材料科学与工程学院,呼和浩特010051)摘要:对比分析了锻态和调质态车轮钢的显微组织,研究了电渣重熔、合金元素Mn和Si对调质态车轮钢组织、力学性能和耐腐蚀性能的影响。结果表明:电渣重熔有助于锻态车轮钢中贝氏体组织的细化,但晶粒度会从非电渣重熔时的6级增大至电渣重熔时的3级,调质态A钢(电渣重熔)和B钢(非电渣重熔)的组织都为回火索氏体,晶粒度分别为6级和7级;调质态B钢的强度和布氏硬度高于调质态A钢,-40℃冲击吸收能和断后伸长率略低于调质态A钢;Mn质量分数从0.63%增加至1.06%或者Si质量分数从0.31%增加至0.69%,调质态车轮钢的强度和布氏硬度会增大、断后伸长率和-40℃冲击吸收能会有所减小,耐腐蚀性能增强。关键词:车轮钢;电渣重熔;合金元素;组织;性能中图分类号:TG161文献标志码:A文章编号:1005-748X(2023)02-0040-05EffectsofElectroslagRemeltingandAlloyingElementsonMicrostructureandPropertiesofWheelSteelYANGYan1,ZHAOJinglong2(1.DepartmentofLocomotiveandRollingStock,BaotouRailwayVocational&TechnicalCollege,Baotou014060,China;2.SchoolofMaterialsScienceandEngineering,InnerMongoliaUniversityofTechnology,Huhehot010051,China)Abstract:Themicrostructureofforgedandquenched-temperedwheelsteelswascomparedandanalyzed.Theeffectsofelectroslagremelting,alloyingelementsMnandSionthemicrostructure,mechanicalpropertiesandcorrosionresistanceofthequenched-temperedwheelsteelswerestudied.Theresultsshowedthatelectroslagremelting(ESR)washelpfultorefinebainitestructureintheforgedwheelsteel,butthegrainsizeincreasedfromgrade6inESRtograde3innonESR.Themicrostructureofquenched-temperedsteelA(ESR)andsteelB(nonESR)wastemperedsorbite.Thegrainsizesofthequenched-temperedsteelAandsteelBweregrade6andgrade7respectively.Comparedwiththequenched-temperedsteelA,thequenched-temperedsteelBhadhigherstrengthandBrinellhardness,andslightlylowerimpactabsorbedenergyat-40℃andelongation.WhenthemassfractionofMnincreasedfrom0.63%to1.06%orthemassfractionofSiincreasedfrom0.31%to0.69%,thestrength,Brinellhardnessandcorrosionre...
