Effect of Manganese and Magnesium on theMechanical Properties and Microstructure ofAl-Si-Mg-Mn

كارشناسي ارشد

ABSTRUCT In this work, the effect of Mn and Mg on the mechanical properties and microstructure of Al-Si-Mg-Mn Casting Alloys has been investigated. For this purpose, Mn and Mg have been used in the range of 0 to 0.8 wt%. Liquid treatment such as fluxing, degassing, modifying and grain refining have been carried out. Sand molds has been designed and manufactured to produce tensile test specimens. Also, Some specimens were heat -treated (T6). The microstructures of the alloys have been studied by means of optical and scanning electron microscopy (SEM). Mechanical properties of different alloys have been investigated in both non heat-treated and heat-treated conditions. All intermetallic compounds formed during solidification have been investigated by use of SEM/EDS. It has been found that the best mechanical properties obtained in the alloy having Al-9%Si-0.25%Mg-0.35%Mn.

202795

دانشگاه علم و صنعت ايران

مواد

Dr. S. Shabestari