سال انتشار: ۱۳۹۱

محل انتشار: اولین همایش بین المللی و ششمین همایش مشترک انجمن مهندسی متالورژی ایران

تعداد صفحات: ۶

نویسنده(ها):

Sadegh Ghanei – Department of Materials Science and Metallurgical Engineering, Engineering Faculty,
Mehrdad Kashefi – Department of Materials Science and Metallurgical Engineering, Engineering Faculty,
Alireza Saheb Alam –
Saeed Kahrobaee – Department of Materials Science and Metallurgical Engineering, Sadjad Institute of Higher Education, Mashhad, Iran

چکیده:

Dual phase steels (DPS) have a composite type microstructure and they take advantages of combination of the hard second phase (martensite) and the ductile matrix (ferrite). This combination could enhance thestrength and ductility. In this regard, martensite phase play a decisive role in determination of DPSproperties and phase percentage of it is a key factor for quality control of heat treated parts. In order to determination of martensite percentage, present study uses Barkhausen signals, nondestructively. Comparison of test results showed a very good agreement between the metallographic observation andBarkhausen study. In general, an increase in the percentage of martensite results in the decrease indomain wall motion and, therefore, magnetic Barkhausen signals increase. Therefore, results showed the potential of this NDT method to separate the good heat treated samples and the bad ones