铸造Al-Pb轴承合金的组织和性能  

Microstructure and Properties of Cast Al-Pb Bearing Alloy

作　　者：孙大仁[1] 安建[1] 刘勇兵[1] 赵旭成 曹希武 张继百 

机构地区：[1]吉林工业大学 [2]辽源市钢背复合材料轴承厂

出　　处：《特种铸造及有色合金》2000年第3期23-25,共3页Special Casting & Nonferrous Alloys

基　　金：博士学科点基金!资助项目 (19990 185 13)

摘　　要：利用一种新的搅拌铸造技术生产系列铸造铝铅合金 ,含铅量的变化范围为w(Pb) =0～ 2 5 % 。试验中 ,研究了铸态铝铅合金的显微组织和力学性能。结果表明 ,在研究的含铅量范围内 ,铸态合金的硬度、抗拉强度和伸长率都随铅的质量分数的增加而下降。断口分析表明 :随质量分数的增加断口特征逐渐由塑性向脆性转变。而摩擦磨损性能随铅的质量分数的增加有一最佳值 ,即铅的质量分数为 15%～ 2 0 %时 ,其磨损量和摩擦系数最小。A series of cast Al-Pb alloy with lead content from 0 to 25% has been produced using a new stirring foundry technology. The microstructure and mechanical properties of cast Al-Pb alloy has been studied. The results showed that the hardness, tensile strength and elongation of as-cast alloy decrease with lead content increasing in the given lead content range. Analysis for fracture indicated that fracture feature varies from ductile to brittle gradually with an increase of lead content. Friction and wear performance are minimized for an optimum lead content 15% - 20%, namely wear and friction coefficients are minimum.

关 键 词：铸造铝铅合金 显微组织 力学性能 轴承合金 

分 类 号：TH142.2[一般工业技术—材料科学与工程]