Hodnocení zbytkového austenitu v cementačních vrstvách metodami obrazové analýzy

Abstract

This bachelor thesis deals with the comparison of evaluation methods of retained austenite volume fraction in carburized layer. Methods for the evaluation of the retained austenite volume fraction include the method of image analysis and X-ray diffraction analysis. In the theoretical part are first described the principles of heat treatment of steel, carburizing and martensitic transformation and subsequently the methods of image analysis and X-ray diffraction analysis. The experimental part describes the process of sample preparation after carburizing and heat treatment, followed by evaluation and obtaining of results of retained austenite fraction by methods of image analysis and X-ray diffraction analysis. In this bachelor thesis, the emphasis was put on the preparation of samples and the methods of evaluation.