添加金属粉末对粉末冶金316L不锈钢性能的影响  

Effect of adding various metal powders respectively on properties of 316L stainless steel

作　　者：孟飞[1] 果世驹[1] 张恒[1] 杨霞[1] 郭林[1] 

机构地区：[1]北京科技大学粉末冶金研究所,北京100083

出　　处：《粉末冶金材料科学与工程》2006年第6期341-344,共4页Materials Science and Engineering of Powder Metallurgy

基　　金：国家863计划资助项目(2001AA337010)

摘　　要：研究了分别添加20%(质量分数)铜粉、锡粉、铝粉对粉末冶金316L不锈钢性能的影响。在烧结温度为1 100℃、烧结气氛为分解氨的条件下,对烧结材料的硬度、密度和显微组织进行了检测和分析。结果表明:添加20%铝粉可显著提高不锈钢粉末的压制性,但铝粉会与不锈钢基体发生强烈的化学反应,生成Fe3Al,恶化材料的性能;添加20%锡粉可显著提高材料的硬度;添加20%铜粉对材料的硬度影响不大。添加大量低熔点金属粉末的液相烧结不能显著提高材料的密度。Effect of various metal powders addition on the properties of 316L stainless steel was investigated. Spec imens containing 20 % （mass fraction） Sn, Cu, Al, respectively were sintered in a dissociated ammonia atmosphere at 1 100 ℃ temperature. Hardness, density and microstructure of the specimen were exmamined. The results revealed that： 1）aluminum additions could greatly increase the compressibility of powders but the reaction of aluminum with stainless steel deteriorated the material property; 2） Sn additions could enhance the hardness of 316L stainless from 75 HRB to 97. 2HRB; 3） copper additions led not to obvious hardness decrease. Large percentage liquid phase of 20% low melting point metal powders additons didn＇t enhance greatly the relative density of the materials.

关 键 词：粉末冶金 316L不锈钢 液相烧结 显微组织 

分 类 号：TF124[冶金工程—粉末冶金]