Ti、B对ZA27合金组织及力学性能的影响  

Effects of Ti-B on microstructure and mechanical properties of ZA27 alloy

作　　者：郭亚希[1] 谢敬佩[1] 闫淑卿[1] 王文焱[1] 王爱琴[1] 李继文[1] 侯锦岭[1] 李洛利[1] 

机构地区：[1]河南科技大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2008年第S1期269-270,共2页Special Casting & Nonferrous Alloys

基　　金：河南科技大学科研基金资助项目(2006ZY053)

摘　　要：采用铝钛中间合金和硼盐对ZA27合金进行变质处理,合金的初生相由通常条件下的粗大枝晶变为均匀分布的细小粒状晶体;铸造缺陷也明显减少,在硬度基本保持不变的情况下,合金的塑性明显提高,伸长率由4.0%增加到9.2%。It is discussed in this paper that the ZA27 alloy is modified by Al-Ti alloy together with B salt. the initial phase of ZA27 alloy turns from rough grains into uniformly distributed fine ones; the casting defects were obviously reduced. the modification makes ZA27 alloy plastically increase greatly, the percentage elongation improved from 4.0% to 9.2%,the hardness unchanged basically.

关 键 词：ZA27合金 塑性 TI P 

分 类 号：TG146.13[一般工业技术—材料科学与工程]