The Effect of Tempering Treatment on the Microstructure and Mechanical Properties of DIN 1.4021 Martensitic Stainless Steel
(ندگان)پدیدآور
Sharifi, H.Kheirollahi-Hosseinabadi, I.Ghasemi, R.نوع مدرک
TextResearch Paper
زبان مدرک
Englishچکیده
To investigate the effect of tempering treatment on mechanical properties and the microstructure of DIN 1.4021 Martensitic Stainless Steel, austenite treatment was conducted for the samples at 1000 ºC temperature for 60 min and then the samples were oil quenched. Later, tempering treatments were performed for the samples at 500 ºC and 700 ºC temperatures for 2 and 5 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 Cr7C3, the tempering treatment at a temperature of 500 ºC increases hardness, tensile strength and yield strength and reduces the amount of impact energy of the samples as well.
کلید واژگان
DIN 1.4021, Martensitic stainless steel, TemperMechanical properties, FESEM
شماره نشریه
1تاریخ نشر
2015-09-011394-06-10
ناشر
Iron & Steel Society of Iranانجمن آهن و فولاد ایران
سازمان پدید آورنده
Department of Materials Science, Faculty of Engineering, Shahrekord University, Shahrekord, IranYoung Researchers and Elite Club, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran
Department of Materials Engineering, Sharif University of Technology, Tehran, Iran