热处理对烧结410不锈钢组织和性能的影响  

Influence of heat treatment on microstructure and properties of sintered 410 stainless steel

作　　者：张言[1] 秦明礼[1] 曲选辉[1] 鲁惠峰[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料热处理学报》2013年第S1期46-49,共4页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金资助项目(50634010)

摘　　要：通过热处理方法消除了410不锈钢粉末注射成形烧结试样在高温烧结过程中产生的晶界偏析,同时控制δ铁素体含量与形态,改善了试样的硬度、抗弯强度、抗拉强度和伸长率。利用Thermo-calc软件计算得到410不锈钢相图,结合试验结果分析了不同淬火温度对试样中δ铁素体含量的影响,以及淬火温度和δ铁素体对试样力学性能的影响,本实验得到的最佳淬火温度为1080℃。Grain boundary segregation of MIM(Metal injection molding)-sintered 410 stainless steel was eliminated by heattreatment.With controlling δ ferrite content,hardness,flexural strength,tensile strength and elongation rate of the sample were improved.Combined with test result,use phase diagram of 410 stainless steel which is calculated with Thermo-calc to analyse how quenching temperature affects sample's δ ferrite content,and how quenching temperature and δ ferrite affect sample's mechanical properties,then conclude that the best quenching temperature is 1080 ℃.

关 键 词：410不锈钢 烧结 热处理 Δ铁素体 力学性能 

分 类 号：TG161[金属学及工艺—热处理]