Volume no :16, Issue no: 1, July (2017)

MICRO AND MACRO HARDNESS CORRELATION FOR HIGH SPEED STEEL HSS WITH MC AND CARBIDE PRECIPITATION, USED TO PRODUCE LAMINATION ROLLS

Author's: R. Servin-Castañeda, I. Calderon-Ramos, F. Equihua-Guillen, R. D. Morales, R. D. Mercado Solís and Vega-Lebrun Carlos Arturo
Pages: [17] - [37]
Received Date: March 30, 2017
Submitted by:
DOI: http://dx.doi.org/10.18642/jmseat_7100121812

Abstract

In the present study, the effect of the percentage of carbides MC and is analyzed on the hardness of HSS steel used to manufacture lamination rolls; heat treatment was given to one piece of the material, with high Cr, Mo and V contents. This was subsequently cut and prepared, according to ASTM the standards to measure microhardness from the carbides, the percentages of each one of them and the macrohardness of the material. Applying different techniques of characterization the evolution of the hardness in the microstructure became evidenced; what we found was that the highest hardnesses is obtained when the amount of carbides is approximately of the amount of MC carbides (ratio of about MC per It is also possible to verify that there is a hardness drop of of the surface with respect to the center, this is due to a reduction in the and which means that there is a hardness drop of approximately with respect to the reduction of carbides in

Keywords

carbides, high speed steel (HSS), hardness, lamination, rolls.