Effect of cryogenic treatment duration on the microhardness and tribological behavior of 40CrMoV5 tool steel

Thakurai, Ravi; Patle, Hemendra; Sunil, B. Ratna; Dumpala, Ravikumar

doi:10.1016/j.matpr.2020.05.126

Cited by 11 publications

(6 citation statements)

References 13 publications

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“…DCT treatment which was provided for 1 day caused the hardness to decrease to 333.59 VHN, while DCT treatment which was provided for 5 days caused the hardness to decrease to 367.75 VHN. This is the same as Thakurai et al [Thakurai et al 2021] which conducted a study on 40CrMoV5 tool steel, that the cryogenic treatment actually reduces the hardness and wear resistance. This also shows that the discussion about cryogenic treatment is debatable regarding its effectiveness [Sonar et al 2018] for a period of less than 24 hours.…”

Section: Hardnesssupporting

confidence: 55%

“…In the field of tribology, cryogenic processes have long been investigated. The cryogenic process can change the microstructure and affect its characteristics, such as ductility, toughness, yield resistance, and corrosion resistance in tool steel [Thakurai et al 2021]. Cryogenic process can also improve wear resistance because of formation of fine martensite [Meng et al 1994].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Deep Cryogenic on Tensile Strength and Impact Toughness in Quench Tempered Steel Plate as a Candidate for Ballistic Resistance Material

Purwanto¹,

Tauviqirrahman²,

Dzulfikar³

2021

MM SJ

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Ballistic resistant materials are materials containing right combination of hardness, strength, and toughness. The quench process produces high hardness and tensile strength but decreases toughness. The hardening process has been performed using an induction machine and a tempering process on a medium carbon steel plate. This work aimed to determine and analyze the effect of deep cryogenic treatment (DCT) on steel plates that have been quenched tempered. This research utilized steel plates of 130 x 130 x 8 mm size which has been quenched and then immersed in liquid nitrogen at a temperature of -196°C for 1, 5, 10, and 20 days. The micro Vickers hardness test specimen, tensile test and charpy impact test were made to determine the effect of immersion time. The test results and analysis showed that DCT had the ability to change microstructure, improve the hardness, tensile strength, and impact toughness. Furthermore, the maximum hardness was obtained during the immersion treatment of 20 days, which was 449.45 VHN and 1107.53 MPa, respectively. However, the highest toughness was obtained during the immersion of 10 days, which was 1,001 J/mm2. In order to get the optimal combination of ballistic characters, further ballistic testing is needed, both in simulation using the finite element method and ballistic experiment test.

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Section: Hardnesssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

The Effect of Deep Cryogenic on Tensile Strength and Impact Toughness in Quench Tempered Steel Plate as a Candidate for Ballistic Resistance Material

Purwanto¹,

Tauviqirrahman²,

Dzulfikar³

2021

MM SJ

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“…125 66 Thakurai et al performed cryogenic treatment on AISI H13 tool steel with different soaking time 12hrs, 24hrs, 36hrs and 48hrs and found highest hardness for 36hrs sample time. 128 Microstructure of different heat-treated samples are shown in Figure 7. Up to soaking period of 24hrs not much variation in microstructure detected although there was de-carburization which is not evident in microstructure but as the soaking time increased to 36hrs or above fine carbides phase detected in micrographs which resulted from retained austenite conversion to martensite.…”

Section: Hardnessmentioning

confidence: 99%

“…Micrograph for varous heat treated samples of AISI H13 tool steel. 128 ( a) Untreated; (b) HT + DCT (12 h); (c) HT + DCT (24 h); (d) HT + DCT (36 h) (e) HT + DCT (48 h).…”

Section: Effect Of Deep Cryogenic Treatment On Propertiesmentioning

confidence: 99%

Effect of cryogenic treatment on properties of materials: A review

Singh

Pandey

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The objective of this review paper is to introduce Cryogenic temperature effect on different properties of materials. Results showed that cryogenic operation improves properties like hardness, fatigue strength, tensile strength, toughness and resistance to wear in comparison to conventional operations. The improvement is a result of microstructural changes at cryogenic temperature which helps in conversion of austenite to martensite and carbide nucleation. The results also showed that doing tempering before or after cryogenic operation has significant influence on material properties which helps to achieve better carbide distribution. Different heat treatment sequences which involve tempering before or after Deep Cryogenic Treatment (DCT), provides varied results. Soaking time at cryogenic temperature also has an important role in refinement of microstructure and affect material properties.

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“…Takım çeliği bileşenlerinin metalurjik, mekanik ve tribolojik özelliklerini iyileştirmek için çeşitli termal, mekanik ve termo-mekanik yöntemler bulunmaktadır. Dolayısıyla sıcak iş takım çeliklerinin özelliklerini iyileştirmek için uygulanabilecek yöntemlerden birisi de ısıl işlemlerdir [4]. Sıcak iş takım çeliklerinin ısıl işlemi, kütlesel özelliklerinin önemli ölçüde bağlı olduğu mikroyapısal bileşenlerin miktarını, boyutunu ve dağılımını değiştirmeye yardımcı olur.…”

Section: Introductionunclassified

EFFECT OF TEMPERING AND CRYOGENIC TREATMENT ON MICROSTRUCTURE AND TRIBOLOGICAL PROPERTIES IN X40CrMoV5-1 HOT WORK TOOL STEEL

KAHRIMAN

2023

NÖHÜ Müh. Bilim. Derg.

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Bu çalışmada kalıp malzemesi olarak kullanılan bir X40CrMoV5-1 sıcak iş takım çeliğinde, uygulanan farklı ısıl işlemlerin mikroyapı ve sertlik üzerindeki etkisi ve sonrasında seçilen numunelerde nitrasyon yüzey işleminin tribolojik özelliklere etkisi incelenmiştir. Isıl işlem prosesleri, tüm numunelerin östenitlenmesinden sonra kriyojenik işlem ve üç farklı sıcaklıkta iki aşamalı menevişleme olarak belirlenmiştir. Isıl işlemler sonrasında numunelerin mikroyapıları ışık mikroskobu ile incelenmiş ve RockwellC sertlikleri ölçülmüştür. Sonrasında meneviş sıcaklığına göre seçilen ve kriyojenik işlem uygulanmış ve uygulanmamış numunelerin yüzeylerine gaz nitrasyon yöntemi ile nitrürleme yüzey işlemi uygulanmıştır. Bu numunelere daha sonra kuru sürtünme aşınma testi uygulanarak nitrürlenmiş numunelerde kriyojenik işlemin tribolojik özelliklere etkisi spesifik aşınma oranı ve mikroskobik incelemeler ile araştırılmıştır. Sonuçlar, nitrürlenmiş numunelerden derin kriyojenik işlemin uygulandığı numunede tribolojik özelliklerin spesifik aşınma oranı ve aşınma mekanizması açısından daha iyi özellikler sergilediğini göstermiştir.

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Effect of cryogenic treatment duration on the microhardness and tribological behavior of 40CrMoV5 tool steel

Cited by 11 publications

References 13 publications

The Effect of Deep Cryogenic on Tensile Strength and Impact Toughness in Quench Tempered Steel Plate as a Candidate for Ballistic Resistance Material

The Effect of Deep Cryogenic on Tensile Strength and Impact Toughness in Quench Tempered Steel Plate as a Candidate for Ballistic Resistance Material

Effect of cryogenic treatment on properties of materials: A review

EFFECT OF TEMPERING AND CRYOGENIC TREATMENT ON MICROSTRUCTURE AND TRIBOLOGICAL PROPERTIES IN X40CrMoV5-1 HOT WORK TOOL STEEL

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