Sc、Ti、Zr复合微合金化对纯铝组织和力学性能的影响  

Effect of Sc,Ti and Zr Composite Micro-alloying on Micrstructure and Mechanical Properties of Pure Aluminum

作　　者：方三明 杨成刚[1] 余爱武 万亿平 李貌[1] 李其胜[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：《热加工工艺》2015年第10期87-89,共3页Hot Working Technology

基　　金：国家自然科学基金项目(51165038;51201087);省教育厅科技计划项目(GJJ13496;GJJ12453);航空科学基金项目(2011ZE56005);南昌航空大学研究生创新基金项目(YC2013005)

摘　　要：通过向工业纯铝中添加微量Sc、Zr、Ti元素,研究Sc、Zr、Ti微合金化对纯铝微观组织和力学性能的影响。结果表明:0.2%Sc和0.2%Ti复合添加时合金的组织完全转变成了细小等轴晶,合金强度和塑性同时得到提高。复合添加0.2%Sc、0.2%Zr和0.2%Ti时的细化效果最为显著,合金平均晶粒尺寸下降到62μm,力学性能比0.2%Sc和0.2%Ti复合添加时提高更多。The effects of Sc,Zr,Ti micro-alloying on the microstructure and mechanical properties of pure aluminum were investigated.The results show that the addition of 0.2%Sc and 0.2%Ti composite addition can make the microstructure of the alloy completely transform into equiaxed grains,and the tensile strength and ductility of the alloy increase effectively.While,the composite addition of 0.2%Sc,0.2%Zr and 0.2%Ti possesses more excellent refinement effect,the average grain size of the alloy is dropped to only 62 μm,and the increase of mechanical properties are more remarkable than that of 0.2%Sc and 0.2%Ti composite adding.

关 键 词：微合金化 等轴晶 晶粒尺寸 微观组织 力学性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]