tailieunhanh - Study on morphology and mechanical properties of stoichiometrically developed Al-Cu-Mg cast alloy

The present study was carried out to investigate the mechanical properties of newly developed cast aluminum alloy with the ( at. %) of copper and ( at. %) magnesium addition in the mole ratio of 1:1:1 of Al-Cu-Mg in as - cast and thermally aged conditions. | Study on morphology and mechanical properties of stoichiometrically developed Al-Cu-Mg cast alloy International Journal of Mechanical Engineering and Technology IJMET Volume 10 Issue 03 March 2019 pp. 1556 1565 Article ID IJMET_10_03_156 Available online at http ijmet JType IJMET amp VType 10 amp IType 3 ISSN Print 0976-6340 and ISSN Online 0976-6359 IAEME Publication Scopus Indexed STUDY ON MORPHOLOGY AND MECHANICAL PROPERTIES OF STOICHIOMETRICALLY DEVELOPED AL-CU-MG CAST ALLOY Rakesh Kumar and Varinder Sahni Department of Mechanical Engineering Sant Longowal Institute of Engineering and Technology Longowal INDIA ABSTRACT The present study was carried out to investigate the mechanical properties of newly developed cast aluminum alloy with the at. of copper and at. magnesium addition in the mole ratio of 1 1 1 of Al-Cu-Mg in as - cast and thermally aged conditions. The atomic weight at. selection of Cu-Mg on the basis of stoichiometric calculations 1 unit at. of copper and 1 unit at. of magnesium preheated at 200 C were mixed in liquid aluminium base material heated in an electric furnace and melting temperature was kept at 750 C for about 10 min alone and this melt was hold at 7300C with alloying additions of copper and magnesium for about 30 min to ensure complete homogenisation Further this liquidous aluminium metal matrix was stirred at 800 rpm for five minutes and poured at temperature 7000C 10 0C in permanent mild steel mould preheated at 2000C in order to achieve as- cast aluminium alloy. The solution treatment at temperature 5000C for 2h followed by a quenching in water at 60 C. Further it was thermally aged at temperature 1600C for 6 h followed by quenching at room temperature. The effect of solution and aged temperature on mechanical properties by changing metallurgical morphology and further the role of intermetallic compounds on mechanical properties of as-cast alloy have been studied. The optical microscopy and .