12Cr17Ni7不锈钢中大型夹杂物的分析  

Analysis of macro inclusions in 12Cr17Ni7 stainless steel

作　　者：张存信 张亮 冯晓庭 龚志刚 胡梅青 刘国孝[3] 米文宇[3] 

机构地区：[1]青山控股集团检测中心,浙江丽水323903 [2]浙江青山钢铁公司,浙江丽水323903 [3]中国兵器科学研究院宁波分院,浙江宁波315103

出　　处：《兵器材料科学与工程》2011年第2期48-51,共4页Ordnance Material Science and Engineering

摘　　要：对12Cr17Ni7(ASTM/301)不锈钢连铸坯中大型夹杂物的形貌和化学成分进行分析。结果表明:该夹杂物是由Fe、Cr、Ni、Mn等金属组成,且有一定的韧性。分析认为该夹杂物是在连铸过程中,在结晶器上较长时间凝结的钢液滴在表面受到氧化后被钢水冲入钢液,这种没有上浮的半凝固态的钢液滴,在连铸后进入铸坯中形成外来的金属夹杂物;对此提出具体的控制措施。The morphology and composition of macro inclusions in 12Cr17Ni7 stainless steel（ASTM/301） continuous casting billet were analyzed.The results show that the inclusions are intermetallics of Fe,Cr,Ni and Mn.Preliminary analysis shows that the inclusions stem from the oxided steel drips that congealed on the crystallizer.The drips enter liquid steel to form inclusions during continuous casting process.Some improvements are suggested on the basis of relative literature,too.

关 键 词：不锈钢 金属夹杂物 化学成分 显微组织 失效分析 

分 类 号：TF764.1[冶金工程—钢铁冶金]