Effect of Chromium and Vanadium Contents on Continuous Cooling Transformation Behavior of Multi-Component White Cast Iron

Yuzo Yokomizo; Kaoru Yamamoto; Nobuya Sasaguri; Yasuhiro Matsubara

doi:10.4028/www.scientific.net/KEM.457.237

Paper Titles

Effect of Rare Earth-Al Additions on the Structural Variations of Medium Carbon Fe-B Cast Alloy
p.213

Influence of Boron Concentration on the Corrosion Resistance of High Boron White Cast Iron to Liquid Zinc Bath
p.219

Effects of Forging and Heat Treatment on Microstructure and Properties of High Boron White Cast Iron
p.225

Structural Refinement of 15%Cr-2%Mo White Irons
p.231

Effect of Chromium and Vanadium Contents on Continuous Cooling Transformation Behavior of Multi-Component White Cast Iron
p.237

Abrasion Behavior of High Cr-V-Nb Cast Iron
p.243

Wear Characteristics of Spheroidal Carbides Cast Irons in Uniaxial Rotary Glass Shredder
p.249

High Temperature Erosion Behaviors of High V-Cr-Ni Spheroidal Carbides Cast Iron
p.255

Study of Feeding Parameters for the Production of Sound High-Alloyed Ductile Iron Castings with Aluminum
p.261

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Effect of Chromium and Vanadium Contents on Continuous Cooling Transformation Behavior of Multi-Component White Cast Iron

Abstract:

In this study, the multi-component white cast irons with 5wt% of Mo, W, 2 wt% of C, Co each and varying Cr content from 1 to 9 wt% and V content from 3 to 9 wt% independently were employed and effect of Cr and V contents on the behavior of continuous cooling transformation (CCT) was investigated. When the Cr content increases to 5wt%, the critical cooling rate of pearlite transformation (VC-P) does not change much, but the VC-P decreases gradually as the Cr content is increased over 5 wt%. The critical cooling rate of bainite transformation (VC-B) increases with an increase in the Cr content. In the case of V effect, on the other hand, the VC-P decreases as the V content increases. However, the VC-B decreases with an increase in the V content up to 4mass%, but over 4wt%V, it increases, and at 9wt%V, the precipitation of ferrite phase occurred. Ms temperature decreases continuously as the Cr content increases to 5wt%, and then increases. As the V content increases, Ms temperature rises gradually. In the case that Mf point appears, the Mf temperature goes up with an increase in the Cr and V contents.