Optimizing heat treatment and wear resistance of high chromium cast irons using computational thermodynamics

The effect of destabilization heat treatment on the microstructure, hardness, fracture toughness and abrasive wear resistance of high chromium hardfacing was investigated. The results from the study shows that the hardness, fracture toughness and abrasive wear resistance are influenced by temperature of destabilization heat treatment and air and furnace cooling conditions, respectively. Destabilization treatment of materials by furnace cooling caused higher secondary carbides in the dendritic austenite whilst by air cooling it showed smaller particles of secondary carbide. Also, it was found that destabilization temperature at 1,000°C improves hardness compared with hardfacing after weld depositing. The study, however, indicated that Palmqvist fracture toughness method is a useful technique for measuring the fracture toughness of high chromium hardfacing compared to Vicker’s hardness method.    

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Effect of bulk heat treatment and plasma surface hardening on the microstructure and erosion wear resistance of complex-alloyed cast irons with spheroidal vanadium carbides

Journal of Friction and Wear ◽

10.3103/s1068366617010056 ◽

2017 ◽

Vol 38 (1) ◽

pp. 58-64 ◽

Cited By ~ 12

Author(s):

V. G. Efremenko ◽

K. Shimizu ◽

T. V. Pastukhova ◽

Yu. G. Chabak ◽

K. Kusumoto ◽

...

Keyword(s):

Heat Treatment ◽

Wear Resistance ◽

Surface Hardening ◽

Erosion Wear ◽

Cast Irons ◽

Plasma Surface ◽

Alloyed Cast ◽

Vanadium Carbides

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Effect of Heat Treatment on Wear Resistance and Impact Strength of High Chromium White Cast Iron

Cast Metals ◽

10.1080/09534962.1989.11818978 ◽

1989 ◽

Vol 2 (1) ◽

pp. 20-22

Author(s):

A. Basak ◽

J. Penning ◽

J. Dilewijns

Keyword(s):

Heat Treatment ◽

Wear Resistance ◽

Cast Iron ◽

Impact Strength ◽

White Cast Iron ◽

High Chromium

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The Effect of Semi-Solid Parameters on the Microstructure and Hardness of High Chromium Cast Irons

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.457.84 ◽

2010 ◽

Vol 457 ◽

pp. 84-89 ◽

Cited By ~ 3

Author(s):

Arash Inanlou ◽

S. Hossein Seyedein ◽

M. Reza Aboutalebi

Keyword(s):

Heat Treatment ◽

Casting Process ◽

Cast Irons ◽

Inclined Plate ◽

Cooling Plate ◽

High Chromium ◽

Primary Austenite ◽

Heat Treated ◽

Before And After ◽

Semi Solid

High chromium cast iron samples of 14% Cr and 24% Cr were produced in sand and permanent mold using semi-solid casting process. A series of experiments were carried out to clarify the effect of copper cooling plate and mold cooling rate on microstructure, particularly morphology and sphericity of primary austenite, hardness and heat treatment cycles. Results show that for 14% Cr and 24% cast irons casting at 10 and 15 degrees of inclined plate result in better sphericity and distribution of primary austenite and carbides. Moreover hardness comparison of both semi-solid iron alloys using copper cooling plate at of this special morphologies resulted from cooling plate investigated by making them heat treat at 1050 centigrade °C for 1 and 2 hours. Hardness results show both heat treated 14 and 24% Cr alloy in 1 hours have hardness comparable with those alloys traditionally cast optimum angles with respect to conventional casting show higher hardness in every condition. Effect but heat treated in 2 hours. Finally X-Ray diffraction pattern taken from specimens before and after heat treatment confirmed with observed phases in optical microscopy before and after heat treatment.

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