Effects of Deep Cryogenic Treatment on the Microstructural Properties of Medium Carbon Spring Steels

Authors : Reşat Can OZDEN, Ersu LOKCU, Mustafa ANIK

Pages : 5-8

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Publication Date : 2020-12-31

Article Type : Research Paper

Abstract :The cryogenic treatment is a complementary procedure that has been applied to a variety of materials to improve their mechanical and physical properties. It was first commercially recognized as an effective method in achieving complete martensitic transformation in the alloyed steels. In this study, microstructural investigations were carried out in order to relate the microstructural properties to the mechanical properties following the cryogenic treatment. For this purpose, the conventional heat treatment insert ignore into journalissuearticles values(CHT); and the deep cryogenic treatment insert ignore into journalissuearticles values(DCT: -196°C); procedures were applied to various medium carbon spring steels. Microstructural examinations were carried out by using scanning electron microscopy. The martensite lattice parameters and the amount of retained austenite were measured by using a high-resolution X-ray diffractometer. Rietveld analysis was used to deconvolute the overlapping peaks of martensites.
Keywords : Steels, Cryogenic Treatment, Microstructure, Alloying