scholarly journals Influence of Cryogenic Treatment on Wear Resistance and Microstructure of AISI A8 Tool Steel

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1038 ◽  
Author(s):  
Pello Jimbert ◽  
Maider Iturrondobeitia ◽  
Julen Ibarretxe ◽  
Roberto Fernandez-Martinez
Keyword(s):  
Wear Resistance ◽  
Tool Steel ◽  
Scientific Literature ◽  
Wear Behavior ◽  
Cryogenic Treatment ◽  
Cold Work ◽  
Secondary Carbide ◽  
Tool Steels ◽  
Deep Cryogenic Treatment ◽  
Cold Work Tool Steel

The effects of deep cryogenic treatment (DCT) on the wear behavior of different tool steels have been widely reported in the scientific literature with uneven results. Some tool steels show a significant improvement in their wear resistance when they have been cryogenically treated while others exhibit no relevant amelioration or even a reduction in their wear resistance. In this study, the influence of DCT was investigated for a grade that has been barely studied in the scientific literature, the AISI A8 air-hardening medium-alloy cold work tool steel. Several aspects were analyzed in the present work: the wear resistance of the alloy, the internal residual stress, and finally the secondary carbide precipitation in terms of lengths and occupied area and its distribution into the microstructure. The results revealed a reduction in the wear rate of about 14% when the AISI A8 was cryogenically treated before tempering. The number of carbides that precipitated into the microstructure was 6% higher for the cryogenically treated samples, increasing from 0.68% to 0.73% of the total area they covered. Furthermore, the distribution of the carbides into the microstructure was more homogenous for the cryogenically treated samples.

CYCLOPS SCK

Alloy Digest ◽  
1979 ◽  
Vol 28 (3) ◽  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Cold Work ◽  
Heat Treating ◽  
Optimum Combination ◽  
Cold Work Tool Steel ◽  
Minimum Distortion

Abstract CYCLOPS SCK is a cold-work tool steel with a balanced composition to provide air hardening and an optimum combination of toughness, wear resistance and minimum distortion during heat treatment. Typical applications are shear blades, trimming dies and forming rolls, including grade rolls for cutlery and flatware. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-346. Producer or source: Cyclops Corporation.

BÖHLER K100

Alloy Digest ◽  
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.

LESCOWEAR

Alloy Digest ◽  
2005 ◽  
Vol 54 (11) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Cold Work ◽  
Heat Treating ◽  
Cold Work Tool Steel

Abstract Lescowear is a medium-chromium-containing air-hardening cold-work tool steel. It is a versatile alloy with a combination of toughness and wear resistance. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on wear resistance as well as forming, heat treating, and machining. Filing Code: TS-623. Producer or source: Timken Latrobe Steel.

BÖHLER K490 MICROCLEAN

Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
North America ◽  
Physical Properties ◽  
Tool Steel ◽  
Cold Work ◽  
Heat Treating ◽  
Powder Metal ◽  
Cold Work Tool Steel

Abstract Böhler (or Boehler) K490 Microclean is an improved and more efficient cold work tool steel compared with other commonly used PM steels such as M4 or PM23. Toughness is more than doubled with a similar wear resistance. This datasheet provides information on composition and physical properties as well as fracture toughness. It also includes information on forming, heat treating, and powder metal forms. Filing Code: TS-734. Producer or source: Böhler-Uddeholm North America. See also Alloy Digest TS-740, April 2017.

DEUTSCHE EDELSTAHLWERKE CRYODUR 2235

Alloy Digest ◽  
2021 ◽  
Vol 70 (3) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Cold Work ◽  
Heat Treating ◽  
Cutting Edge ◽  
High Carbon ◽  
Short Run ◽  
Specialty Steel ◽  
Cold Work Tool Steel

Abstract Deutsche Edelstahlwerke Cryodur 2235 is a high-carbon, Cr-V, alloy cold-work tool steel that has medium hardenability and is suitable for short-run tooling requiring a combination of good wear resistance and toughness, and a keen cutting edge. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming and heat treating. Filing Code: TS-811. Producer or source: Deutsche Edelstahlwerke Specialty Steel.

Effect of Deep Cryogenic Process on the Microstructure and Hardness and Wear Resistance of High Carbon Tool Steel

2018 ◽  
Vol 934 ◽  
pp. 100-104
Author(s):  
Yuan Ching Lin ◽  
Ji Wei Gong
Keyword(s):  
Wear Resistance ◽  
Tool Steel ◽  
Cryogenic Treatment ◽  
Wear Test ◽  
High Carbon ◽  
Deep Cryogenic Treatment ◽  
Treatment Conditions ◽  
The Matrix ◽  
Cryogenic Process ◽  
The Moment

In this investigation, the effects of different heat treatment conditions on the mechanical properties of high carbon tool steel (SK2) were explored. Experimental results indicated that immediately doing deep cryogenic treatment can effectively reduce retained austenite after quenching. The moment of the holding time for the cryogenic treatment was extended can promote the fine carbides precipitated, and thus increased its hardness. The results of X-ray diffraction showed that the carbides in the matrix included Fe3C and Fe7C3.The wear test results demonstrated that the specimen with Q-T1hr-C24hr-T1hr treatment has the highest wear resistance than the others, which was caused by the effect of several tempering processes to improve toughness of the matrix and to precipitate considerable quantities of the fine carbides.

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