Precipitation and Recrystallization in Al-(Zr)-(Pr)-(Cr) Alloys

被引：0
作者：
Fang Huachan [1 ]
Chao Hong [1 ]
Chen Kanghua [1 ]
机构：
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 03期
关键词：
aluminum; praseodymium; zirconium; precipitation; dispersoid; MECHANICAL-PROPERTIES; AL(SC; ZR); ALLOYS; ALUMINUM-ALLOYS; ZR ALLOYS; AL; EVOLUTION; BEHAVIOR; CR; ER; ADDITIONS;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Structure and thermal stability of nano-sized dispersoids in Al-(Zr)-(Pr)-(Cr) alloys have been revealed by conventional and high-resolution transmission electron microscopes. Results show that Al-0.16Zr-0.26Pr-0.18Cr alloy (wt%) exhibits significant precipitation strengthening, thermal stability and recrystallization-resistant ability by forming a relatively high density of well-dispersed Pr-containing (Al, Cr)(3)Zr dispersoid (15 similar to 20 nm) with L1(2) structure. The dispersoid is coherent even exposed at 500 degrees C for 400 h. Pr-containing (Al, Cr)(3)Zr dispersoid is finer and coarsening-resistant around 500 degrees C, as compared with L1(2)-structured Al3Zr and Pr-containing Al3Zr dispersoids.
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页码：599 / 605
页数：7
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