Dependence of microhardness on annealing time of amorphous Al-Mm-Ni-(Fe,Co) alloys

被引：0

作者：

Dimitrov, H ^{[1
]}

Latuch, J ^{[1
]}

Cieslak, G ^{[1
]}

Kulik, T ^{[1
]}

机构：

[1] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

来源：

REVIEWS ON ADVANCED MATERIALS SCIENCE | 2004年 / 8卷 / 02期

关键词：

Amorphous ribbons - Crystalline fractions - Isothermal annealing;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al-Mm-Ni-(Fe,Co) alloys of two slightly different compositions were melt spun to amorphous ribbons. DSC studies of the ribbons show that the first crystallization stage, responsible for the precipitation of fcc-Al, is well separated from the following. Mixed structures containing nanosized fcc-Al crystals, embedded in amorphous matrix were obtained by isothermal annealing of the initially amorphous ribbons for different times and thus, different crystalline fractions the fcc-Al crystals were obtained. The microhardness of the alloys increases with the increase of annealing time, reaching values of about 550 HV0.02 after 60 min of annealing. Replacing Fe by Co does not significantly influence the microhardness of these alloys. The slight changes of chemical composition do not seem to have a clear effect on microhardness.

引用

页码：134 / 137

页数：4