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Journal of Materials Engineering and Performance

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01-12-2011

Enhancement of Fatigue Properties of Ductile Irons by Successive Austempering Heat Treatment

Authors: M. R. Jahangiri, M. Nili Ahmadabadi, H. Farhangi

Published in: Journal of Materials Engineering and Performance | Issue 9/2011

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Abstract

The aim of this study is to evaluate the effects of austempering heat treatment on the microstructure, mechanical properties, and bending fatigue behavior of an alloyed ductile iron with chemical composition of 1.6 wt.% Ni, 0.47 wt.% manganese and 0.6 wt.% copper. Based on the results of tensile and impact tests, as well as metallographic studies, optimum heat-treating cycles were determined and applied on the standard fatigue specimens. The results showed that the fatigue strength of specimens austempered successively was practically comparable to those austempered at high temperatures and considerably greater than those austempered at low temperatures.

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Title: Enhancement of Fatigue Properties of Ductile Irons by Successive Austempering Heat Treatment
Authors: M. R. Jahangiri
M. Nili Ahmadabadi
H. Farhangi
Publication date: 01-12-2011
Publisher: Springer US
Published in: Journal of Materials Engineering and Performance / Issue 9/2011
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-011-9846-y

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