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- Title
Solidification microstructures and mechanical properties of vertical centrifugal cast high speed steel.
- Authors
Kim, S. W.; Lee, U. J.; Woo, K. D.; Kim, D. K.
- Abstract
This study was undertaken to investigate the influence of Nb and V alloying elements and manufacturing conditions on the microstructural behaviour and mechanical characteristics of HSS (high speed steel) roll manufactured by a VCC (vertical centrifugal casting) process. In the Fe - 2C - 6Cr-1.5W - 3Mo - 4V alloy, the amount of MC carbide was increased and the the amount of M[sub 7]C[sub 3] carbide decreased with an increase in V and Nb content. In steel containing 3%Nb, primary NbC carbide was formed within the cell in the matrix. The hardness of steel containing 6.5%V but no Nb was increased a little but when 9%V was added, the hardness decreased in the specimen owing to the soft ferritic matrix. The hardness of the matrix in steel containing 1.5%Nb increased, but decreased for 3%Nb addition. In wear tests, wear loss decreased with increasing rotational wear speed.
- Subjects
SOLIDIFICATION; MICROSTRUCTURE; CENTRIFUGAL force; MECHANICAL properties of metals; TOOL-steel
- Publication
Materials Science & Technology, 2003, Vol 19, Issue 12, p1727
- ISSN
0267-0836
- Publication type
Article
- DOI
10.1179/026708303225008356