DENDRITE GROWTH VELOCITIES IN HIGHLY UNDERCOOLED, DILUTE NI-C MELTS

被引：19

作者：

ECKLER, K ^{[1
]}

HERLACH, DM ^{[1
]}

HAMERTON, RG ^{[1
]}

GREER, AL ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,DEPT MAT SCI & MET,CAMBRIDGE CB2 3QZ,ENGLAND

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)90173-K

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dendrite growth velocities have been measured in droplets of dilute Ni-C alloys undercooled by up to 300 K using an electromagnetic levitation technique. For alloys containing 1.7 at.%C and 3 at.%C, the observed behaviour is in good agreement with the predictions of current models. Velocities in pure nickel and a 0.6 at.%C alloy at low undercooling (< 80 K) are in excess of those expected for the pure material and suggest effects due to the presence of an impurity.

引用

页码：730 / 733

页数：4

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