国内外95CrMo中空钢成品洁净度及组织性能分析  

Analysis on cleaniness,microstructure and properties of the finished hollow steel 95CrMo product from domestic and abroad

作　　者：王林珠[1] 李京社[1] 熊家泽[2] 夏辉华[2] 杨树峰[1] 吴拓[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]首钢贵阳特殊钢有限责任公司,贵州贵阳550005

出　　处：《中国冶金》2014年第12期5-11,共7页China Metallurgy

基　　金："十二五"国家科技支撑计划资金资助项目(2012BAE03B01);国家自然科学基金资助项目(51374021)

摘　　要：对国内外95CrMo中空钢成品进行了对比研究,结果表明:国内中空钢中S含量低,虽然脱氧元素Al、Ca含量也高,剩余wT[O]相比不低,但wAls/wAlt比值明显低于国外,废钢带入Ti和残余元素高于国外中空钢;国内中空钢中夹杂物数量较多,尺寸较大,CaS包裹的球型复合夹杂物多于国外中空钢,国外中空钢中含有Al2O3的夹杂物相对较多,但尺寸小,几乎没有钛类夹杂;国内外中空钢组织和硬度差别不大,夹杂物的数量、尺寸和类型可能是影响中空钢疲劳寿命的主要原因。The comparative study on the hollow steel 95CrMo from domestic and abroad was undertaken.The result shows that the sulphur content from domestic hollow steel was low.Although the deoxidizing element contents of a-luminum and calcium from domestic hollow steel were higher,the remaining total oxygen was not lower,and the ra-tio of wAls/wAlt was significantly lower than that from abroad.The content of titanium and residual elements from the scrap were higher from domestic hollow steel.Quantities and sizes of inclusions from domestic hollow steel were large and there were more spherical inclusions which were encapsulated with CaS.While in foreign samples,more Al2 O3 inclusions were detected which were small,and there were few titanium inclusions.The difference in micro-structures and hardness for the samples from home and abroad was not significant.It can be inferred that the num-ber,size and type of inclusions may be the main factors in effecting the hollow steel fatigue life.

关 键 词：中空钢 夹杂物 显微组织 显微硬度 

分 类 号：TF76[冶金工程—钢铁冶金] TG142.1[一般工业技术—材料科学与工程]