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Development of Al-Zn Die-Casting Alloys and Its Felxural Deformation Behavior

Journal: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) (Vol.10, No. 3)

Publication Date:

Authors : ; ;

Page : 14185-14192

Keywords : Al-Zn Alloy; Liquid Metallurgy; Extrusion; Microstructure; Flexural Behavior;

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The present research goal is to manufacture the novel Al-x wt. % Zn die-casting alloys through liquid metallurgy route. The amount of Zn content was varied from 0 to 30. %with a step of 10 percentages in the pure Al,Thecast samples were squeezed under semi-solid condition (temperature ~500oC) and then all the samples were extruded at a temperature of 673k to achieve improved density of at least 95% and above. The microstructures of developed Al-Zn die-casting alloys were analysed using advanced electron microscope. The microstructures results revealed the formation of primary -Al phase and (+η) phase with η-agglomerates for higher amount of Zn content (greater than 20 wt. %). The consolidated Al-Zn alloys were mechanically tested by three-point ending test to examine the flexural behaviour of developed alloys. The flexural results explained that Al-20Zn alloy exhibited improved mechanical performance compared to other alloys. Maximum flexural strength of 196 MPa with the flexural strain of 7.48 was achieved in Al-20Zn alloy. Hence, Al-20Zn alloy is recommended to use for structural and automotive parts in real time application.

Last modified: 2020-09-30 16:43:14