时效工艺对新型铝基滑动轴承合金组织与性能的影响  

Effect of Aging Treatment on Microstructure and Properties of a New Aluminum Matrix Sliding Bearing Alloy

作　　者：张崇才[1] 王龙[2] 王守峰[1] 邓平璋[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039 [2]四川大学材料学院,四川成都610065

出　　处：《金属热处理》2005年第12期31-34,共4页Heat Treatment of Metals

基　　金：四川省科技厅应用基础研究项目(01GY051-20)

摘　　要：通过金相显微镜、扫描电镜观察、硬度和拉伸试验研究了自然时效和人工时效状态下新型铝基合金TZS88的组织与性能.结果表明,TZS88合金人工时效与自然时效后的组织均由α(Al)固溶体基体+Sn相+化合物组成,化合物主要有S(Al2CuMg)相、θ(CuAl2)相、NiAl3、FeNiAl9、TiAl3、AlB2和TiB2等,TZS88合金时效强化主要来自于化合物S相.与自然时效相比,TZS88合金人工时效后的抗拉强度增加约5%,硬度增加0.5～5.3HBS,而伸长率下降25%左右,因此建议不采用人工时效.The microstructures and tensile properties of artificial aging and natural aging a new aluminum matrix sliding hearing alloy TZS88 were investigated by SEM,metallograph analysis, hardness and tensile tests. The results show that the microstructures of both artificial aged and natural aged alloys are α（Al） matrix,Sn-phase and compounds such as S （ Al2CuMg） , 0 （ CuAl2 ）, NiAl3, FeNiAl9, TiAl3 , AlB2 and TiB2 etc. Age hardening of TZS88 alloy mostly comes from S （Al2CuMg） phase. Relative to natural aged of TZS88 alloy, tensile strength of artificial aged increases by about 5%, hardness increases by 0.5 ～5.3HBS, but elongation rate decreases by 25% or so, so artificial ageing process for the alloy can be omitted.

关 键 词：滑动轴承 铝合金 人工时效 

分 类 号：TG166.3[金属学及工艺—热处理]