Influence of Cryoprocessing on Mechanism of Carbide Development in Cobalt-Bearing High-Speed Steel (M35)

Dhokey, N. B.; Hake, A. R.; Kadu, S.; Bhoskar, I.; Dey, G.K.

doi:10.1007/s11661-013-2067-2

Cited by 58 publications

(28 citation statements)

References 9 publications

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“…While improvements of 44% -126% [4] and 301% [5] in tool life were recorded, the reported improvement in wear rate was in the range of 56% -87% [6] in case of M2 HSS tool steels. Similarly, significant improvements in tool life and wear rate were also reported for M35 HSS tool steels [7] [8]. In the similar lines, published literature on D3 and D6 type tool steel demonstrated 39% -68% [9] and 52% [10] improvements in wear rate.…”

Section: Introductionsupporting

confidence: 62%

Influence of Deep Cryogenic Treatment (DCT) on Thermo Mechanical Performance of AISI H13 Tool Steel

Bhawar¹,

Khot²,

Kattire³

et al. 2017

MSCE

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Deep cryogenic treatment (DCT) is one of the most recent processes being used to treat tool steels. It is a supplementary treatment where components are treated below subzero temperatures for several cryo-soaking hours. This paper focuses on to study the effect of deep cryogenic treatment on Thermo mechanical properties of AISI H-13 tool steel. Deep cryogenic treatment at 32 hours of cryo-soaking time is applied and thermo mechanical performance of tool steel was analyzed by using pin on disk high temperature wear testing and stress rupture testings. The microstructural evolutions during DCT were evaluated by using scanning electron microscope (SEM). It was observed that microstructural modifications like increase in carbide density, fine and uniform martensitic structure during DCT had significantly improved properties.

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Section: Introductionsupporting

confidence: 62%

Influence of Deep Cryogenic Treatment (DCT) on Thermo Mechanical Performance of AISI H13 Tool Steel

Bhawar¹,

Khot²,

Kattire³

et al. 2017

MSCE

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“…The secondary carbide formation driven by the deep cryogenic treatment, however, is expected. Carbon atoms form nano-level atomic clusters on the interdendritic retained austenite surfaces, grain bounda- ries and dislocation zones during the cryogenic process [31,32]. These atomic clusters are the potential precipitation zones for the secondary carbides during the tempering process following the cryogenic treatment.…”

Section: Morphological Characteristicsmentioning

confidence: 99%

Enhancement of the mechanical properties of EN52CrMoV4 spring steel by deep cryogenic treatment

Özden

Anık

2020

Materialwissenschaft Werkst

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The effect of the deep cryogenic treatment on the micro-structure and mechanical properties (tensile strength, toughness, residual stress and fatigue strength) of the medium carbon spring steel, which is subjected to different heat treatment steps, is investigated. Deep cryogenic treatment causes spring steel to keep compressive residual stress more efficiently due to an increase in the density of the crystalline defects, retardation in the stress relief after the phase transformations and nano-cluster carbide formations. If deep cryogenic treatment is applied before the tempering then the homogeneously distributed fine carbides form after the tempering and the grains remain relatively fine. The microstructure with homogeneously distributed fine carbides and fine grains cause spring steels to have simultaneously enhanced tensile strength, ductility and fatigue strength. If deep cryogenic treatment is applied after the conventional heat treatment (quenching + tempering), however, the coarse carbides form in the micro-structure and the improvement in the mechanical properties of the spring steel is limited.

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“…During this warming-up period, the atomic movement increases with the stress relaxation of the matrix. It makes a helpful situation for the precipitation and growth of carbides, thus leading to a higher nucleation rate results in fine carbides and more homogenous carbide distribution 4,14,27 .…”

Section: Microstructural Featurementioning

confidence: 99%

Influence of Cryogenic Treatment on the Tribological Behaviour of AISI H21 Tool Steel

Korade

Ramana

Jagtap³

2018

Mat. Res.

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The aim of the present work was to find out the optimum cryosoaking duration of deep cryogenic treatment to reduce the wear rate. The AISI H21 hot work tool steel specimens were hardened at 1195 ºC, cryotreated at-185 ºC for 6 to 30 h, double tempered at 540 ºC and soft tempered at 100 ºC. The hardness, impact toughness, wear rate and microstructural characteristics of the cryotreated specimens were studied. Wear test parameters were optimized by using Taguchi technique. Analysis of variance and signal to noise ratio were carried out in order to find significant parameters affecting the dependent parameter. The results show that load is the most influencing parameter followed by sliding velocity and cryosoaking duration. The linear mathematical model has been developed for wear rate using a regression analysis technique which will be useful for predicting results for new experiments.

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Influence of Cryoprocessing on Mechanism of Carbide Development in Cobalt-Bearing High-Speed Steel (M35)

Cited by 58 publications

References 9 publications

Influence of Deep Cryogenic Treatment (DCT) on Thermo Mechanical Performance of AISI H13 Tool Steel

Influence of Deep Cryogenic Treatment (DCT) on Thermo Mechanical Performance of AISI H13 Tool Steel

Enhancement of the mechanical properties of EN52CrMoV4 spring steel by deep cryogenic treatment

Influence of Cryogenic Treatment on the Tribological Behaviour of AISI H21 Tool Steel

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