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   Improving the Microstructure, Mechanical and Magnetic Properties of Aisi 4340 Steel Using the Heat Treatment Process  
   
نویسنده Samadi Shahreza Z. ,Dini G. ,Taherizadeh A.
منبع International Journal Of Iron And Steel Society Of Iran - 2013 - دوره : 10 - شماره : 2 - صفحه:18 -22
چکیده    Aisi 4340 steel is one of the super strong steels that can be selected for different applications. by designing theproper cycles of heat treatment, the optimum microstructure and properties of this steel can be achieved. in thisstudy, different heat treatment cycles were introduced to achieve the optimum microstructure and improve themechanical and magnetic properties of aisi 4340 steel. the results of tensile, impact, hardness, metallographyand magnetic tests for various samples under different heat treatment cycles showed that parameters such astemperature and time of austenitizing and tempering were among the most important factors in achieving relativelya wide range of ultimate tensile strength (1467-933 mpa), impact energy (113-18 j), transport current density(1554-1347 mt), coercivity (1342-1240 a/m), diminished force (1165.6-947.5 mj/kg) and microstructure(tempered martensite and bainite). this wide range of properties can lead to a large number of applications of thistype of steel in various industries including manufacturing steel parts such as rotors.
کلیدواژه Aisi 4340 Steel ,Heat Treatment ,Strength ,Microstructure ,Mechanical Properties ,Magnetic Properties
آدرس Isfahan University Of Technology, ایران, University Of Isfahan, ایران, Isfahan University Of Technology, ایران
 
     
   
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