Title

Solution treatment of vacuum high pressure die cast aluminum alloy A380.

Date of Award

2004

Degree Type

Thesis

Degree Name

M.A.Sc.

Department

Electrical and Computer Engineering

First Advisor

Hu, H.

Keywords

Engineering, Materials Science.

Rights

CC BY-NC-ND 4.0

Abstract

High pressure die castings usually contain gas porosity mainly due to the entrapment of air or gas during melting due to very high speed injection of the molten metal into the cavity. Vacuum high pressure die casting technology has been proven to be an effective way of reducing gas porosity and pore sizes in castings. As a result, density and mechanical properties, particularly tensile strength and ductility, were improved markedly, and also make castings heat treatable. An investigation on the effect of solution heat treatment in high pressure vacuum die casting A380 alloy has been carried out using methods of microhardness measurement, tensile testing, optical, scanning electron microscopy (SEM), X-ray diffraction, and EDS analysis and fractography. The average ultimate tensile strength (UTS) of 273.2 MPa is attained on the solution treated A380, which is 50% improvement over the vacuum as-cast one. Solution treatment of 480°C x 12hrs increases the average percent of elongation to 3.91% from 1.11% at the as-cast condition. (Abstract shortened by UMI.)Dept. of Electrical and Computer Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2004 .W375. Source: Masters Abstracts International, Volume: 43-01, page: 0298. Adviser: Henry Hu. Thesis (M.A.Sc.)--University of Windsor (Canada), 2004.