Effect of cryogenic treatment on tensile behavior of case carburized steel-815M17

Bensely, A.; Senthilkumar, D.; Lal, D. Mohan; Nagarajan, G.; Rajadurai, A.

doi:10.1016/j.matchar.2006.06.019

Cited by 116 publications

(47 citation statements)

References 6 publications

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“…In [41], a slight reduction in tensile strength has been measured for a carburized steel-815M17 subjected to CT, compared to the same material conventionally treated. In particular the authors have observed a decrease of 1.5% for SCT and of 9.34% for DCT.…”

Section: Tensile and Bending Strengthmentioning

confidence: 99%

Deep Cryogenic Treatment: A Bibliographic Review

Baldissera¹,

Delprete²

2008

TOMEJ

190

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Abstract:The use of cryogenic treatment (CT) to improve mechanical properties of materials has been developed from the end of the Sixties. At the present time, the initial mistrust about CT has been cleared up and many papers about different materials reporting laboratory tests results, microstructural investigations and hypothesis on CT strengthening mechanisms have been published. The removal of retained austenite combined with fine dispersed -carbides precipitation have been widely observed and their effects on mechanical properties have been measured. In addition, some recent studies have pointed out a different mechanism for fatigue strengthening of stainless steels, which involves nano-martensite formation during the CT. The present paper summarizes the state of art about CT, focusing on methods, parameters, results and assumed microstructural mechanisms, in order to get a starting point for new researches to come.

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Section: Tensile and Bending Strengthmentioning

confidence: 99%

Deep Cryogenic Treatment: A Bibliographic Review

Baldissera¹,

Delprete²

2008

TOMEJ

190

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“…In recent decades, cryogenic treatment has been introduced into various industries as a new heat treatment method that modifies the microstructure and mechanical properties of a wide range of materials, such as tool steels [1][2][3][4][5], carburized steels [6][7][8][9], tungsten carbides [10], composites, and polymers [11]. Cryogenic treatment can be classified into two different categories: (a) shallow cryogenic treatment, which generally takes place in the temperature range from −50 to −80°C; (b) deep cryogenic treatment, which is frequently performed below −120°C [1].…”

Section: Introductionmentioning

confidence: 99%

Effect of deep cryogenic treatment on the properties of 80CrMo12 5 tool steel

Amini

Nategh

Shafyei

et al. 2012

Int J Miner Metall Mater

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The effect of deep cryogenic treatment on the mechanical properties of 80CrMo12 5 tool steel was investigated. Moreover, the effects of stabilization (holding at room temperature for some periods before deep cryogenic treatment) and tempering before deep cryogenic treatment were studied. The results show that deep cryogenic treatment can eliminate the retained austenite, making a better carbide distribution and a higher carbide amount. As a result, a remarkable improvement in wear resistance of cryogenically treated specimens is observed. Moreover, the ultimate tensile strength increases, and the toughness of the sample decreases. It is also found that both stabilization and tempering before deep cryogenic treatment decrease the wear resistance, hardness, and carbides homogeneity compared to the deep cryogenically treated samples. It is concluded that deep cryogenic treatment should be performed without any delay on samples after quenching to reach the highest wear resistance and hardness.

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“…So in cryotretment the slow cooling/heating process is recommended. 6 Soaking Period:-After the literature review of cryotretment (DCT) on the tool steels the samples were subjected to soaking period in between 1 and 40 h were the conversion of material from austenite to martensite takes place and the formation of new carbides takes place for carbide distribution.The soaking of Ti-6Al-4V alloy up to 72h (DCT) at -196 0 C. Therefore the soaking period should be optimized to increase the wear resistance efficiency and reduce the cost of cryogenic treatment. 7 Soaking Temperature:-Cryogenic treatment also known as sub-zero heat treatment shows the variation according the type of tool steel material.…”

Section: Introduction To Cryogenic Process:-mentioning

confidence: 99%