Title of article :
Evaluation of the Mechanical Properties of Niobium Modified Cast AISI H 13 Hot Work Tool Steel
Author/Authors :
Noorian, A. iran university of science and technology - School of Metallurgy and Material Engineering, تهران, ايران , Kheirandish, Sh. iran university of science and technology - School of Metallurgy and Material Engineering, تهران, ايران , Kheirandish, Sh. Center of Excellence for Advanced Materials and Processing , Saghafian, H. iran university of science and technology - School of Metallurgy and Material Engineering, تهران, ايران
Abstract :
In this research, the effects of partially replacing of vanadium and molybdenum with niobium on themechanical properties of AISIH 13 hot-work tool steel have been studied. Cast samples made of the modified new steel were homogenized and austenitized at different conditions,followed by tempering at the specified temperature ranges. Hardness, red hardness. three point bending test and Charpy impact test were carried out to evaluate the mechanical properties together with characterizing the microstructure ofthe modified steel using scanning electron microscope. The results show that niobium addition modifies the cast structure ofNb-alloyed steel, and increases its maximum hardness. It was found that bending strength; bending strain, impact strength, and red hardness ofthe modified cast steel are also higher than those ofthe cast H13 steel, and lower than those of the wrought H13 steel.
Keywords :
Hot , work tool steel , H13 , Nb , niobium , NbC , mechanical properties
Journal title :
Iranian Journal of Materials Science and Engineering
Journal title :
Iranian Journal of Materials Science and Engineering
