The Effect of Tempering Treatment on the Microstructure and Mechanical Properties of DIN ۱.۴۰۲۱ Martensitic Stainless Steel
- سال انتشار: 1394
- محل انتشار: مجله ی بین المللی انجمن آهن و فولاد ایران، دوره: 12، شماره: 1
- کد COI اختصاصی: JR_ISSIRAN-12-1_002
- زبان مقاله: انگلیسی
- تعداد مشاهده: 142
نویسندگان
Department of Materials Science, Faculty of Engineering, Shahrekord University, Shahrekord, Iran
Young Researchers and Elite Club, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran
Department of Materials Engineering, Sharif University of Technology, Tehran, Iran
چکیده
To investigate the effect of tempering treatment on mechanical properties and the microstructure of DIN ۱.۴۰۲۱ Martensitic Stainless Steel, austenite treatment was conducted for the samples at ۱۰۰۰ ºC temperature for ۶۰ min and then the samples were oil quenched. Later, tempering treatments were performed for the samples at ۵۰۰ ºC and ۷۰۰ ºC temperatures for ۲ and ۵ h, respectively; then quenching in oil was conducted. After the heat treatment, hardness, tensile strength and impact tests were performed to investigate mechanical properties. Moreover, optical microscopy and field emission scanning electron microscopy (FESEM) were performed to investigate microstructure observations and fracture surfaces. X-Ray diffraction (XRD) was carried out to measure the austenite retained in the samples. The results showed that due to the formation and precipitation of alloy carbides Cr۷C۳, the tempering treatment at a temperature of ۵۰۰ ºC increases hardness, tensile strength and yield strength and reduces the amount of impact energy of the samples as well.کلیدواژه ها
DIN ۱.۴۰۲۱, Martensitic stainless steel, Temper, Mechanical properties, FESEMاطلاعات بیشتر در مورد COI
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