scholarly journals Effect of Cryosoaking Time on Transition in Wear Mechanism of M2 Tool Steel

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
N. B. Dhokey ◽  
J. V. Dandawate ◽  
R. Rawat
Keyword(s):  
Wear Resistance ◽  
Tool Steel ◽  
Impact Energy ◽  
Wear Mechanism ◽  
Cryogenic Treatment ◽  
Time Interval

Specimens of M2 were hardened (H) by quenching at 1200°C, triple tempered (TTT) at 400°C, and then cryogenically (C) treated at minus 185°C for varying lengths of time interval starting from 4 hours to 48 hours of cryosoaking followed by soft tempering at 100°C to relieve cold stresses (HTC). Underlying wear mechanism, hardness, and impact energy were studied and optimum cryosoaking time was established. It was felt that wear resistance of cryogenically treated material was influenced by the so-called tertiary carbides possibly produced as a result of cryogenic treatment.

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.

scholarly journals Role of Eta-carbide Precipitations in the Wear Resistance Improvements of Fe-12Cr-Mo-V-1.4C Tool Steel by Cryogenic Treatment.

1994 ◽  
Vol 34 (2) ◽  
pp. 205-210 ◽  
Author(s):  
Fanju Meng ◽  
Kohsuke Tagashira ◽  
Ryo Azuma ◽  
Hideaki Sohma
Keyword(s):  
Wear Resistance ◽  
Tool Steel ◽  
Cryogenic Treatment

scholarly journals Effect of Cyclic Cryogenic Treatment on Wear Resistance, Impact Toughness, and Microstructure of 42CrMo Steel and Its Optimization

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Haidong Zhang ◽  
Xianguo Yan ◽  
Qiang Hou ◽  
Zhi Chen
Keyword(s):  
Wear Resistance ◽  
Impact Toughness ◽  
Wear Mechanism ◽  
Fracture Mechanism ◽  
Cryogenic Temperature ◽  
Orthogonal Design ◽  
Cryogenic Treatment ◽  
Holding Time ◽  
Range Analysis ◽  
42Crmo Steel

Cyclic cryogenic treatment, a major cycle accompanied by zero or more subsidiary cycles, was conducted on the hardened 42CrMo steel using orthogonal design method to investigate the effect of different parameters (cryogenic temperature, holding time, and cycles number) of cryogenic treatment on wear resistance and impact toughness of the steel. Range analysis was performed to obtain the influencing order of the three parameters and their optimum values. The results show that after cryogenic treatment, the steel exhibits higher wear resistance and impact toughness, whereas no significant change in hardness. For wear resistance, the influencing order of parameters is cryogenic temperature, holding time, and cycles number, and the optimum values of the parameters are −160°C, 24 h and two cycles, respectively. For impact toughness, the influencing order of parameters is cryogenic temperature, cycles number, and holding time, and the optimum values are −120°C, 24 h and three cycles, respectively. The wear topography and fracture topography were examined using scanning electronic microscopy (SEM) to investigate the wear mechanism and fracture mechanism of the steel after cryogenic treatment, respectively. The results show that after cryogenic treatment, the wear mechanism is the combination of abrasive wear and adhesive wear with oxidative wear, and the fracture mechanism is a quasicleavage fracture. The microstructure was also examined by SEM to investigate the influencing mechanism of cryogenic treatment for improving wear resistance and impact toughness of the steel. It suggests that more precipitation of fine carbides dispersively distributed in the matrix is responsible for the beneficial effect of cryogenic treatment on wear resistance and impact toughness of the steel.

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.

Study on the Microstructure and Performance of New Type Martensite Wear Resistant Steel

2011 ◽  
Vol 199-200 ◽  
pp. 167-172
Author(s):  
Jia Wang ◽  
Qing Zhong He ◽  
Yong Hu ◽  
Ming Chao Wang
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Impact Energy ◽  
Wear Mechanism ◽  
Abrasive Wear Resistance ◽  
Manganese Steel ◽  
Resistant Steel ◽  
Wear Resistant ◽  
And Performance ◽  
The Impact

The new low alloy martensitic wear resistant steel 25Si2MnNi3 and steel 53Si2MnNi3 are developed, which hardness are about HB450 and HB600 respectively, the impact abrasive wear resistance of new low alloy steel relative to high manganese steel ZGMn13 is investigated on MLD-10 type impact abrasive wear tester under the different impact energy, and the wear mechanism is analyzed. As a result, the new low alloy martensitic steel which impact toughness is well always obtains better impact abrasive wear resistance than that of steel ZGMn13 under different impact energy, and the primary wear mechanism gradually changes from micro-ploughing and micro-cutting to micro-fatigue and micro-cracking with impact energy increasing.

Effects of Deep Cryogenic Treatment on Tribological Properties of the Tool Steel DC53

2013 ◽  
Vol 311 ◽  
pp. 477-481
Author(s):  
Yuh Ping Chang ◽  
Huann Ming Chou ◽  
Jeng Haur Horng ◽  
Li Ming Chu ◽  
Zi Wei Huang
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Tool Steel ◽  
Tribological Properties ◽  
Cryogenic Treatment ◽  
Treatment Technology ◽  
Deep Cryogenic Treatment ◽  
The Past ◽  
Surface Magnetization

The bad quality of machining surfaces caused by the micro wear of pressing parts has been a very big trouble for the engineers over the past decades. In order to decrease the surface wear, the technology of heat treatment is used popular. Many papers about the heat treatment technology had been proposed. Especially, the deep cryogenic treatment has been used widely for the purpose of wear-resistance in the industry. Moreover, the method of using variations of surface magnetization to monitor the dynamic tribological properties between the metal pairs has been applied successfully by the author. Therefore, this paper is base on the above statements to further investigate the tribological properties of the tool steel by deep cryogenic treatment. It can be clarified for effects of different deep cryogenic treatment temperatures on wear-resistance of the tool steel DC53. Besides, the purpose of better quality and faster product speed of the pressing process can then be obtained.

Wear Behaviour of Cryogenic Treated M2 Tool Steel under Dry Sliding Condition

2015 ◽  
Vol 798 ◽  
pp. 395-401 ◽  
Author(s):  
S.A. Sonawane ◽  
V.K. Tripathi ◽  
S.D. Ambekar
Keyword(s):  
Wear Resistance ◽  
Tool Steel ◽  
High Speed ◽  
Cryogenic Treatment ◽  
High Speed Steel ◽  
Wear Behaviour ◽  
Wear Loss ◽  
Dry Sliding ◽  
Deep Cryogenic Treatment ◽  
Steel Material

The technique of cryogenic treatment of cutting tools is an inexpensive permanent treatment process that improves the physical and mechanical properties of materials such as metals, plastics and composites. It promotes the transformation of the retained austenite into martensite at cryogenic temperatures and also facilitates the formation of fine carbides in the martensite, thereby improving the wear resistance.This paper compares the wear behaviour of hardened and triple tempered AISI M2 high-speed steel and the same steel that was hardened and triple tempered in conjunction with a deep-cryogenic treatment at 88K for 16 and 24 hours. Test materials were subjected to wear tests on pin-on-disc machine in dry sliding condition. Equations are developed for predicting the wear resistance of M2 tool steel material. The hardness data wear loss and microstructure throw light on the improvement in wear resistance property of the M2 tool steel.It is demonstrated that the properties of the cryogenically treated samples are superior to those of conventionally treated. 24 hours cryogenically treated hardened and triple tempered M2 tool steel shows excellent wear resistance properties over 16 hours cryo-treated M2 and conventionally treated M2 tool steel material.

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