莫莱石短纤维增强ZL107合金复合材料的时效特性  

Ageing Behavior of Short Mullite Fiber Reinforced ZL107 Alloy Composites

作　　者：王珊玲[1] 沈保罗[1] 高升吉[1] 涂铭旌[1] 

机构地区：[1]四川大学(西区)金属材料系,成都610065

出　　处：《金属热处理》2000年第12期6-8,共3页Heat Treatment of Metals

基　　金：自然科学基金!(59631080)

摘　　要：采用宏观硬度测定及差热分析法 (DSC)研究了莫莱石短纤维增强ZL10 7合金复合材料的时效特性。结果表明 ,复合材料中GP区的形成因增强相的加入在一定程度上被抑制 ,在 140℃时效初期基体合金表现出较快的硬度增加趋势 ;在 2 0 5℃时效 ,复合材料表现时效加速现象。随纤维加入量的增加 。The ageing behavior in ZL107 aluminum alloy matrix reinforced with 0～16% short mullite fiber was studied using macrohardness(HB) measurements and differential scanning calorimetry (DSC).The fibers had a considerable effect on the ageing response of the matrix alloy in composites.Mullite fibers caused suppression of GP zone formation in composites to some degree.Aged at 140℃,the matrix alloy showed a higher hardness rate at the beginning of ageing,on the contrary,composites aged at 205℃ showed a accelerated precipitation hardening.With the increase of fiber amount,silicon precipitated more quickly.

关 键 词：铝基复合材料 莫莱石短纤维 ZL107合金 时效特性 

分 类 号：TB333[一般工业技术—材料科学与工程] TG156.92[金属学及工艺—热处理]