Development of abrasion-resistant Ni-hard 4 cast irons

Liu, Jinzhu; Man, Yongfa

doi:10.1016/0043-1648(93)90084-y

Cited by 8 publications

(5 citation statements)

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“…Ni hard cast irons have excellent abrasion resistance. 1,2 Due to the high chromium content, the carbides in high Cr white cast irons change from (Fe,Cr) 3 C to (Cr,Fe) 7 C 3 , and they are evenly distributed over the metallic matrix. The microhardness of (Cr,Fe) 7 C 3 is 1300-1500 HV.…”

Section: Introductionmentioning

confidence: 99%

Investigations on microstructures and properties of B containing cast steel for wear resistance applications

Fu¹,

Lei²,

Xing³

et al. 2008

Ironmaking & Steelmaking

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The microstructures of B bearing cast steel (B 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 characterised by means of optical microscopy, scanning electron microscopy, electron probe microanalyser and X-ray diffraction. The solidification structure of B steel consists of pearlite, ferrite, martensite and boride (Fe 2 B), while the hardness is 1430-1480 HV. Borides distribute along the grain boundary in the form of eutectic. Fine lath martensite and eutectic Fe 2 B can be obtained by water quenching at 1223-1273 K. The hardness and impact toughness of the B steel exceed 55 HRC and 150 kJ m 22 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.

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Section: Introductionmentioning

confidence: 99%

Investigations on microstructures and properties of B containing cast steel for wear resistance applications

Fu¹,

Lei²,

Xing³

et al. 2008

Ironmaking & Steelmaking

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“…As is well known, to improve wear resistance, the wear-resistant materials have undergone a process of evolution from white cast iron, high manganese steel, alloyed white cast iron such as nickel-hard cast iron, and high chromium cast iron (HCCI) to high speed steel (HSS) [6][7][8][9][10]. Furthermore, correspondingly, their reinforcing phases have experienced the development from Fe 3 C and M 7 C 3 to MC and M 2 C (M represents alloying elements such as Cr, Mo, V, Ni, and W) since, generally speaking, the wear resistance of materials is proportional to the hardness of the materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mo Concentration on the Microstructure Evolution and Properties of High Boron Cast Steel

et al. 2020

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The microstructure evolution, mechanical properties, and tribological properties of high boron cast steel (HBCS) with various Mo concentrations are investigated. The results indicate that Mo addition can significantly modify the microstructure and enhance the comprehensive properties. With the increase of Mo concentration, borides change from the original fish-bone Fe-rich and Cr-rich M2B to dendritic Fe-rich M2B, blocky and cluster-like Cr-rich M2B, and grainy Mo-rich M2B. The hardness of HBCS increases gradually with the increase of Mo content due to the solid solution strengthening and the refinement of M2B. It can be found that all the samples exhibit quasi-cleavage, but the impact toughness increases firstly and reaches the maximum value when the concentration of Mo is 2.10 wt.%, which is the result of the dispersive distribution of M2B rather than the original fish-bone M2B. Subsequently, the impact toughness begins to decrease as the concentration of Mo further increases because of the extensive formation of grainy Mo-rich M2B at the grain boundary. Meanwhile, the wear results reveal that the average friction coefficient and wear ratio decrease with the increase of Mo content, and the wear mechanism changes from abrasive wear and adhesive wear to abrasive wear when the concentration of Mo exceeds 2.10 wt.%.

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“…The micro-hardness of the cementite is 840-1100 HV. Ni-hard cast irons have excellent abrasion resistance [1][2]. Due to the high chromium content, the carbides in high-Cr white cast irons change from (Fe, Cr) 3 C to (Cr, Fe) 7 C 3 and they are isolatedly distributed over the metallic matrix.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Structures and Properties of B-Bearing Cast Steel for Wear Resistance

Jiang

Feng

2010

AMM

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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.

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Development of abrasion-resistant Ni-hard 4 cast irons

Cited by 8 publications

References 0 publications

Investigations on microstructures and properties of B containing cast steel for wear resistance applications

Investigations on microstructures and properties of B containing cast steel for wear resistance applications

Effect of Mo Concentration on the Microstructure Evolution and Properties of High Boron Cast Steel

A Study on the Structures and Properties of B-Bearing Cast Steel for Wear Resistance

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