Effect of Intercritical Annealing Temperature on Phase Transformations in Medium Carbon Dual Phase Steels

被引：0
|
作者：
Ersoy Erişir
Oğuz Gürkan Bilir
机构：
[1] Kocaeli University,Department of Metallurgical and Materials Engineering
来源：
Journal of Materials Engineering and Performance | 2014年 / 23卷
关键词：
bainite-start temperature; dilatometry; dual phase steels; martensite-start temperature; phase transformations;
D O I：
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学科分类号：
摘要：
This paper presents a study concerning phase transformations during quenching of a medium carbon dual phase steel using thermodynamic equilibrium calculations and dilatometry. Medium carbon steel was subjected to the intermediate quenching to produce a fine grained ferrite/martensite dual phase steel. 4 samples quenched after intercritical annealing at 725, 730, 740, and 750 °C. Martensite-start and bainite-start temperatures were calculated from dilatometric curves using plastodilotemeter. Experimental findings are supported by calculated phase diagrams and equilibrium phase compositions using ThermoCalc® and calculations from different empirical formulas. It is concluded that martensite-start temperature depend on chemical composition and grain size of austenite.
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页码：1055 / 1061
页数：6
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