Sc,Zr和Ti对纯铝组织和力学性能的影响  

Effect of Sc,Ti,Zr on Microstructures and Mechanical Properties of Pure Aluminum

作　　者：余爱武 杨成刚[1] 刘奋成[1] 廖云飞[1] 陈和[1] 何宇[1] 

机构地区：[1]南昌航空大学轻合金加工科学与技术国防重点学科实验室,江西南昌330063

出　　处：《铸造技术》2014年第8期1631-1633,共3页Foundry Technology

基　　金：国家自然科学基金资助项目(51165038;51201087);航空科学基金资助项目(2011ZE56005);江西省教育厅科技计划资助项目(GJJ13496;GJJ12453;GJJ13493);江西自然科学基金资助项目(0132BAB216013);南昌航空大学研究生创新基金资助项目(YC2013005)

摘　　要：通过向工业纯铝中分别添加等量的Sc,Zr和Ti元素,研究和对比了3种晶粒细化剂对纯铝组织和力学性能的影响。结果表明,0.2%Sc对纯铝的细化效果较弱,但合金的强度和硬度得到很大的提高,且塑性下降不多;添加0.2%Ti时所产生的细化作用优于0.2%Zr,使合金的平均晶粒尺寸减小到160μm左右,同时使合金的强度、硬度及塑性达到了合理的配合。The equal amount of grain refiners Sc, Zr and Ti were added into commercial-purity aluminium, and the effect of the grain refiners on the microstructures and mechanical properties of the aluminium was investigated. The results show that the grain refinement is weak when 0.2% Sc is added, but the hardness and strength of the alloys increases, and the plastic has little reduction. The refmement effect of 0.2%Ti is greater than that of 0.2%Zr, the average grain size of the alloy drops to about 160 μm, and the tensile strength, hardness and plasticity achieve a reasonable match.

关 键 词：晶粒细化剂 组织 力学性能 晶粒尺寸 形核质点 

分 类 号：TG146.21[一般工业技术—材料科学与工程]