Investigation of Retained Austenite to Martensite Phase Transformation on Wear Behavior of White Cast Irons

مهندسی متالورژی و مواد

Article 1, Volume 29, Issue 2 - Serial Number 18, November 2018, Pages 19-28   

Document Type: Original Articles

DOI: 10.22067/ma.v0i29.44982

Authors

Vahid Karami Dastenaee^{* 1}; seyedsadegh ghasemi bnad koki²; masoud mosallaeepoor³; alireza mashreghi³

¹yazd university

²yazd University

³yazd

Abstract

In this study, the effect of retained austenite to martensite phase transformation has been studied in conjunction with wear behavior of white cast irons. For this purpose, the wear behavior of an alloyed white cast iron with a carbide-austenite microstructure has been studied in comparison to that of conventional white cast iron with a pearlite-carbide microstructure. The wear tests were conducted by using pin on disk test method with loads of 80, 100, 120 and 140N. The results show that retained austenite is stable and also work hardened during wear test conducted with loads less than 100N in alloyed white cast iron samples, while, the retained austenite transformed to martensite after using loads greater than 100N. The retained austenite to martensite phase transformation has been associated with significant improvement in wear resistance in the alloyed white cast iron.

Keywords

white cast iron; carbide; pearlite; martensite; retained austenite; wear behavior

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