GRAIN-REFINEMENT IN RAPIDLY SOLIDIFIED ALLOYS

被引：51

作者：

GREER, AL

机构：

[1] University of Cambridge, Department of Materials Science and Metallurgy, Cambridge, CB2 3QZ, Pembroke Street

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)90006-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A significant reduction in grain size can be achieved in all types of rapid solidification processing, whether depending mainly on rapid external heat extraction or on bulk melt undercooling. The microstructural observations are reviewed for melt-spun ribbon and for highly undercooled melts. The origin of the refinement in these cases is analysed and is shown not to be due to copious homogeneous nucleation, which may, however, operate in refinement by devitrification.

引用

页码：16 / 21

页数：6

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