铈对202不锈钢夹杂物形态和力学性能的影响  

Effect of cerium on Inclusion Morphology and Mechanical Properties of 202 Stainless Steel

作　　者：董方[1] 蔡国君 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]抚顺特殊钢股份有限公司,辽宁抚顺113001

出　　处：《中国稀土学报》2010年第3期372-378,共7页Journal of the Chinese Society of Rare Earths

摘　　要：通过金相、扫描电镜观察、能谱分析和力学性能检测,研究了加入Ce后202不锈钢的强度、塑性、冲击韧性变化。在相同的热处理工艺条件下,分别加入不同含量的Ce,与不添加Ce的202不锈钢的力学性能进行比较。结果表明:钢中加入Ce可改变夹杂物形态,并且在适当的范围内可显著提高202不锈钢的强度、塑性、横向冲击韧性。当Ce的质量分数为0.016%时,202不锈钢可获得最佳的综合力学性能。The changes in the strength,ductility and impact toughness of 202 stainless steel with different contents of Ce element were investigated through the mechanical performance testing,metallographic,SEM and EDS.The mechanical properties of 202 stainless steel with different contents of Ce were compared with those of the 202 stainless steel without Ce addition under the same heat treatment process.The results showed that the inclusion morphology was changed by adding Ce in the 202 stainless steel.And the strength,ductility and impact toughness of 202 stainless steel were obviously improved when added a proper content of Ce.The 202 stainless steel with of 0.016% Ce in mass fraction had the best mechanical properties.

关 键 词：202不锈钢 强度 塑性 横向冲击韧性 稀土 

分 类 号：TG142.13[一般工业技术—材料科学与工程]