Experimental investigation to study the effects of processing parameters on developed novel AM(Al-Mn) series alloy

ABSTRACT

In this paper, a novel AM series Mg alloy developed through a stir casting process has been discussed. The current research utilizes an improved stir casting setup with a systemized inert facility. The effects of the processing parameters viz. stirring speed and holding temperature on microstructure and mechanical properties of the novel AM alloy (Mg-7 wt%Al-0.9 wt%Mn) have been investigated during the study. In addition, the study also attempts to highlight the adverse effect of higher values of processing parameter on porosity. The five output variables, such as Ultimate tensile strength (UTS), Yield strength (YS), Elastic modulus (E), Hardness, and Density (d), were measured for different combinations of processing parameters. The results showed an evident rise in the mechanical properties with the variation of stirring speed and holding temperature; the optimum values were attained at 250 rpm and 700°C. A significant enhancement in the Elastic modulus (24.3%) and hardness (16.21%) was witnessed vis-à-vis the existing AM series alloy. The improved properties of the novel material will make it a prospective candidate for industrial applications.

KEYWORDS:

• Alloys
• casting
• stirring
• temperature
• microstructure
• phases
• properties
• porosity

Additional information

Funding

This study and investigations were buttressed by Birla Institute of Technology & Science (BITS), Hyderabad, India through the use of its lab facilities. The Thermo-Calc software was facilitated by Bhanu Scientific Systems Pvt ltd. Hyderabad, India.