Influence of carbide particle size on the wear performance of cryogenically treated H13 die steel

Abstract

Cryogenic treatment could be useful in preventing AISI H13 steel forging dies from the premature failure that is continuously under the action of mechanical stresses and temperature. This work involves heating H13 steel specimens to 1020°C, quenching in oil followed by double tempering at 520°C for 2 h subsequently undergoing cryogenic treatment at minus185°C for cryosoaking periods starting from 8 to 32 h. Dry sliding wear tests were performed at room temperature on pin-on-disc wear testing machine at 40 N load, 3 m s -1 speed and 6000 m sliding distance. The hardness, carbide density, particle size measurements, and microstructural analysis were carried out. It has been established that reduced carbide particle size due to cryogenic treatment assists in minimizing material flow which was corroborated by decrease in the wear coefficient for H13 steel by 51% as compared to conventional treatment. This outcome was supported by the application of the equation of phase transformation.

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

“…Between the cryogenic temperature and holding time, the cryogenic temperature is the most influencing parameter, followed by holding time as the second influencing parameter, which agrees with the findings of Darwin et al [40]. Many researchers have found that lowering cryogenic temperature could obtain more improvement in wear resistance of steels, and the optimum value of cryogenic temperature was −196°C [9,25,41,42]. Similarly but slightly different in this work, cryogenic treatment at −160°C obtained more improvement of wear resistance than −120°C, and wear resistance at −196°C improved almost the same as −160°C, only higher by 0.29%, which may be due to the introduction of multiple cycles of cryogenic treatment.…”

The Impact of Prenitriding on the Microstructure and Mechanical Properties of the Carburized Surface Layer in a Martensitic Stainless Steel

“…Cryogenic and tempering treatment can promote the transformation of retained austenite and precipitate stable carbonitrides, resulting in a significant strengthening effect. [ 29–31 ] In addition, the severe quenching stress caused by martensitic transformation and high alloy elements contents can be also eliminated or reduced by tempering treatment. [ 32 ] The detailed processes are shown in Figure 1 .…”

Effect of cryogenic treatment on properties of materials: A review

“…It was stated that minimum wear rate occurs at minimum carbide particles size. 115 Mani in his research on turning of Inconel 625 observed that cryogenic treatment helped in increasing tool life by lowering the heat generation which helped in reducing tool wear. The results of cryogenic turning showed improvement of surface roughness which was found to be 50.52% as compared to dry turning.…”