镍对ZL109合金中铁相的影响  

Effect of Nickel on the Iron-Rich Intermetallic in ZL109 Alloy

作　　者：武玉英[1] 宋建岗[1] 刘相法[1] 姜炳刚[2] 陈海霞 边秀房[1] 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室,山东济南250061 [2]山东大学材料科学与工程学院,山东济南250061 [3]山东滨州渤海活塞股份有限公司,山东滨州256602

出　　处：《铸造》2006年第11期1178-1180,共3页Foundry

基　　金：国家自然科学基金资助项目(50171037);山东省自然科学基金项目(Z2004F03)。

摘　　要：利用JXA-8800电子探针(EPMA)、NETZSCHDSC404型差示扫描热分析计(DSC)等手段对ZL109合金中镍对富铁相的影响的研究结果表明:镍的加入能使针片状的β铁相转变为鱼骨状α-Al8Ni2Fe相,鱼骨状α-Al8Ni2Fe相在共晶点以上的温度区形成,是一种准稳定相。Effect of nickel on the iron-rich inter-metallic in ZL109 alloy was studied using A JXA-8800 electron microprobe and NETZSCH DSC 404 in this paper. The experiment results revealed that the addition of nickel changed the morphology of the iron-rich inter-metallic, turning the needle-like phase to a fishbone-like α-Al8Ni2Fe phase. It is also found that the formation temperature of α-Al8Ni2Fe is higher than the eutectic reaction temperature, and the addition of nickel inhibited the peritectic reaction to form β phase, which made the α-Al8Ni2Fe becoming quasi-stable phase.

关 键 词：AL-SI合金 富铁相 微观组织 

分 类 号：TG113.1[金属学及工艺—物理冶金]