Effect of temperature on hardness and wear resistance of high-chromium cast irons deposited with flux-cored strips

AbstractHigh chromium cast irons are widely used as abrasion resistant materials. Their properties and wear resistance depend on carbides and on the nature of the matrix supporting these carbides. The paper presents test results of irons which contain (in wt.%) 18-22 Cr and 2-5 C, and is alloyed by 1.7 Mo + 5 Ni + 2 Mn to improve the toughness. Tests showed as-cast irons with mostly austenitic matrix achieved hardness 36-53 HRC but their relative abrasion-resistance was higher than the tool steel STN 19436 heat treated on hardness 60 HRC.

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Research on the Wear Resistance of High-Chromium White Cast Iron and Multi-Component White Cast Iron

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.859.64 ◽

2013 ◽

Vol 859 ◽

pp. 64-69

Author(s):

Chien Lung Yen ◽

Fu Je Chen ◽

Yung Ning Pan

Keyword(s):

Wear Resistance ◽

Cast Iron ◽

Linear Relationship ◽

White Cast Iron ◽

Wear Test ◽

Specimen Surface ◽

Testing Time ◽

Cast Irons ◽

High Chromium ◽

Treatment Conditions

The pin-on-disk wear test and solid particle erosion test were used to investigate the wear resistance property of both high chromium white cast iron and multi-component white cast iron with optimal alloy compositions and heat treatment conditions. Experimental results indicate that a linear relationship between the wear lose and the testing time exists for high chromium white cast irons. Apparent scratch grooves and sheared pits appeared on the specimen surface. Subsurface observations found pit depths of some 4.5~8.0 mm. Crack propagation routes were clearly visible along the martensitic grain boundaries for alloys in the as-quenched state. Tempering treatment increases the toughness of the alloy, resulting in an increase in the resistance to crack formation. On the other hand, the multi-component white cast irons exhibited a non-linear relationship between the wear lose and the testing time. Relatively shallow scratches were found on the specimen surface, and pit depths of about 4.0 mm were observed through subsurface observations. Tempering at 570°C caused a reduction in hardness of the alloy, and therefore, the fracture mode tends to be ductile. As a result, deformation only occurred in crater regions with no clear evidence of spreading.

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DOUBLE SEVEN

Alloy Digest ◽

10.31399/asm.ad.ts0124 ◽

1962 ◽

Vol 11 (9) ◽

Keyword(s):

Fracture Toughness ◽

Wear Resistance ◽

Physical Properties ◽

Cold Working ◽

High Hardness ◽

Heat Treating ◽

Heavy Duty ◽

High Carbon ◽

Die Steel ◽

High Chromium

Abstract DOUBLE SEVEN is an air hardening high-carbon high-chromium tool and die steel having high hardness and wear resistance. It is recommended for shear blades, cold working tools, and heavy duty dies. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-124. Producer or source: Edgar Allen & Company Ltd, Imperial Steel Works.

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BÖHLER K100

Alloy Digest ◽

10.31399/asm.ad.ts0788 ◽

2020 ◽

Vol 69 (3) ◽

Keyword(s):

Wear Resistance ◽

Physical Properties ◽

Abrasive Wear ◽

Tool Steel ◽

Cold Work ◽

Abrasive Wear Resistance ◽

High Carbon ◽

High Chromium ◽

Cold Work Tool Steel

Abstract Böhler K100 is a high-carbon, high-chromium (12%), alloy cold-work tool steel that is suitable for medium run tooling in applications where a very good abrasive wear resistance is needed but where demands on chipping resistance are small. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming and machining. Filing Code: TS-788. Producer or source: voestalpine Böhler Edelstahl GmbH & Co.

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