A Study on the Structures and Properties of B-Bearing Cast Steel for Wear Resistance
Authors:
- 1 October 2010
- journal article
- Published by Trans Tech Publications, Ltd. in Applied Mechanics and Materials
- Vol. 34-35, 878-882
Abstract
The microstructures of B-bearing cast steel containing 0.8-1.2 wt.%B, 0.8-1.2 wt.%Cr, 1.0-1.5 wt.%Mn, 0.6-1.0 wt.%Si and 0.10-0.25 wt.%C have been characterized by means of optical OM, SEM, EPMA and XRD. The solidification structure of B-steel consists of pearlite, ferrite, martensite and boride (Fe2B), while the hardness is 1430-1480 HV. Borides distribute along the grain boundary in the form of eutectic. Fine lath martensite and eutectic Fe2B can be obtained by water quenching at 1223 K-1273 K. The hardness and impact toughness of the B-steel exceed 55 HRC and 150 kJ/m2, respectively. The abrasion resistance determined using a pin abrasion tester is obviously higher than that of the martensitic cast steel and nears to the high chromium white cast iron.Keywords
This publication has 14 references indexed in Scilit:
- The effect of boron on the wear behavior of iron-based hardfacing alloys for nuclear power plants valvesJournal of Nuclear Materials, 2006
- An investigation of the wear behaviours of white cast irons under different compositionsMaterials & Design (1980-2015), 2006
- A mechanical aspect of borides formed on the AISI 440C stainless-steelVacuum, 2004
- Modeling of spatial distribution of the eutectic M2B borides in Fe-Cr-B cast ironsJournal of Materials Science, 2004
- Grain level analysis of crack initiation and propagation in brittle materialsActa Materialia, 2001
- A step towards designing Fe–Cr–B–C cast alloysMaterials Science and Engineering: A, 2001
- Heat Treatment in High Cr White Cast Iron Nb AlloyJournal of Materials Engineering and Performance, 2001
- Fracture mechanism and toughness of the welding heat-affected zone in structural steel under static and dynamic loadingMetallurgical and Materials Transactions A, 2000
- Development of abrasion-resistant Ni-hard 4 cast ironsWear, 1993
- A Pin-on-Drum Abrasive Wear Test and Comparison with Other Pin TestsJournal of Testing and Evaluation, 1988