The Effect of Heat Treatment and Alloying Elements on Microstructure and Wear Resistance of Hadfield Steels

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Galin Moghaddam, Emad | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41752 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Varahram, Naser; Davami, Parviz
Abstract:
Hadfiled steel was invented by Sir Robert Hadfield in 1882. Different types of this steel have been used widely in cement industry, mining, drilling and railroad ways due to its high toughness, high work hardening capacity and excellent wear resistance. Since the wear life of machineries and parts used in such industries is short and costly, time consuming service of the wear parts, there have been a lot of interest to increase wear resistance of austenitic manganese steels in recent years. In this study a new type of austenitic manganese steels with high carbon-high vanadium and high tungsten content has been introduced and effect of carbon, vanadium and tungsten on microstructure, micro and macro hardness, newly formed phases, mechanical and impact properties and wear resistance in high and medium strees abrasion conditions have been investigated. EDS technique was used to see the elemental distribution in the carbide and matrix phase. Wear test results showed that the wear resistance of the newly invented austenitic manganese steels was about 9times of the conventional hadfield steel
Keywords:
Work Hardening ; Wear Resistance ; Vanadium Carbide ; Tungsten Carbide

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