ICOSAHEDRAL AND DECAGONAL PHASE FORMATION IN AL-MN ALLOYS

被引：88

作者：

SCHAEFER, RJ

BENDERSKY, LA

SHECHTMAN, D

BOETTINGER, WJ

BIANCANIELLO, FS

机构：

[1] JOHNS HOPKINS UNIV HOSP,CTR MAT SCI,BALTIMORE,MD 21218

[2] TECHNION ISRAEL INST TECHNOL,DEPT MAT ENGN,HAIFA,ISRAEL

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1986年 / 17卷 / 12期

关键词：

ALUMINUM METALLOGRAPHY - Microstructures - CRYSTALLOGRAPHY - CRYSTALS - Symmetry;

D O I：

10.1007/BF02645910

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The solidification conditions leading to formation of the icosahedral phase have been investigated using samples prepared by melt spinning and electron beam surface melting. The icosahedral phase grows in competition with another metastable phase which is decagonal. Both phases can displace the equilibrium intermetallic phases by nucleating ahead of them when the solidification velocity is greater than a few centimeters per second. The relative abundance of the icosahedral and decagonal phases varies with composition and solidification rate.

引用

页码：2117 / 2125

页数：9

共 19 条

[1] MODEL FOR SOLUTE REDISTRIBUTION DURING RAPID SOLIDIFICATION [J].