Investigation of Wear Mechanism in Quenched and Tempered Medium Carbon-High Chromium Martensitic Steel Using Dry Sand/Rubber Wheel
سال انتشار: 1394
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 49
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شناسه ملی سند علمی:
JR_ISSIRAN-12-2_003
تاریخ نمایه سازی: 5 شهریور 1402
چکیده مقاله:
The aim of the present study was to investigate the effect of quenching and tempering temperatures on the microstructure, mechanical properties and the wear characteristics of medium carbon-high chromium wear resistant steel. In addition, the dominant wear mechanisms were studied. For this purpose, austenitizing and tempering temperatures were selected in the ranges of ۹۰۰- ۱۰۰۰ °C and ۳۰۰- ۵۰۰ °C, respectively. Mechanical properties were evaluated through hardness and impact tests as well as wear test (by dry sand/rubber wheel apparatus). Microstructure and wear and fracture surface appearances were investigated using scanning electron microscopy (SEM). Moreover, the measurement of retained austenite was done through X-Ray diffraction (XRD) analysis. The obtained results revealed that the best wear properties were achieved by tempering at ۴۵۰ °C due to the reduction of tendency to micro-cracking, the decrease in internal stresses, and the improvement of the impact energy. Observing the wear surfaces showed that the wear mechanism for the specimen tempered at ۴۰۰ °C was a combination of abrasive, adhesive and fatigue wear. However, abrasive wear was the only active wear mechanism for the specimen tempered at ۴۵۰ °C.
کلیدواژه ها:
Medium carbon-high chromium wear resistant steel ، Tempering ، Dry sand/rubber-wheel abrasion ، Wear mechanism
نویسندگان
S.M. Sehri
Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University , Najafabad, Isfahan , Iran
H. Ghayour
Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University , Najafabad, Isfahan , Iran
K. Amini
Department of Mechanical Engineering, Tiran Branch, Islamic Azad University, Tiran, Isfahan, Iran
H. Rastegari
Department of Mechanical and Materials Engineering, Birjand University of Technology, South Khorasan, Iran
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