Influence of atomisation on solidification microstructures in the rapidly solidified powder of the Cr-Mo-V tool steel

被引：31

作者：

Behulova, M

Moravcik, R

Kusy, M

Caplovic, L

Grgac, P

Stancek, L

机构：

[1] Slovak Univ Technol Bratislava, Fac Mat Sci & Technol, Trnava 91724, Slovakia

[2] Slovak Univ Technol Bratislava, Fac Mech Engn, Bratislava 83102, Slovakia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 304卷

关键词：

rapid solidification; atomisation; undercooling; dendrite; remelting; dendrite fragmentation; tool steel;

D O I：

10.1016/S0921-5093(00)01511-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The paper deals with the analysis of microstructure formation in the tool Steel of ledeburite type under quasi-equilibrium and non-equilibrium conditions. The quasi-equilibrium solidification behaviour was investigated by differential thermal analysis. The rapidly solidified powder was produced bg the nitrogen gas atomisation. Three main types of solidification microstructures were observed in all granulometric fractions of rapidly solidified powder: dendritic, grain refined and compound (a mixture of dendritic and grain refined). Mechanism of microstructure transition from dendritic to non-dendritic was described. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：540 / 543

页数：4

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