HEAT TREATMENT STRENGTHENING EFFECTS OF RARE EARTHS ON Mg-9Al ALLOY

查看全文 作　　者：Y.S.Wang;J.Z.Yu;Q.D.Wang;W.J.Ding 出　　处：《Acta Metallurgica Sinica(English Letters)》索引2003年第16卷第1期,共7页 摘　　要：Mg-9Al-xRE magnesium alloys were studied, where x is 0, 0.4, 0.8, 1.2 and 1.6% (inweight percent, wt%), respectively. Influence of rare earths (RE) on microstructureand strength in both T4 (solute heat treatment) and T6 (solute heat treatment andartificial ageing treatment) were investigated. Strength of specimen was tested at am-bient temperature. The microstructure was analyzed by optical microscopy, scanningelectron microscopy (SEM) and X-ray diffraction analysis. RE additions improvedT4 tensile strength of the treated alloys. Small addition (0.4wt%) of RE greatly im-proved the strength of ageing treated (T6) Mg-9Al alloy, but further additions caused decreasing. 关 键 词：镁铝合金 机械性质 强度 热处理 稀土