GRAIN-REFINEMENT IN DROP-TUBE-PROCESSED NICKEL-BASED ALLOYS

被引：28

作者：

COCHRANE, RF ^{[1
]}

HERLACH, DM ^{[1
]}

FEUERBACHER, B ^{[1
]}

机构：

[1] DLR,INST RAUMSIMULAT,W-5000 COLOGNE 90,GERMANY

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1991年 / 133卷

关键词：

D O I：

10.1016/0921-5093(91)90167-L

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Drop-tube processing in inert gas is used to study grain refinement in highly undercooled melts. The high cooling rate in fine droplets can give rise to grain-refined but directional microstructures. The general recrystallization associated with "spherical" solidification morphologies may be prevented by a sufficiently high post-solidification cooling rate. The diameter of the spherical elements can be related to calculated local solidification times.

引用

页码：706 / 710

页数：5

共 13 条

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