Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
El Kadiri, Haitham
Committee Member
Moser, Robert D.
Committee Member
Oppedal, Andrew L.
Committee Member
Whittington, Wilburn
Date of Degree
12-9-2016
Document Type
Graduate Thesis - Open Access
Major
Mechanical Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Aerospace Engineering
Abstract
The current study investigates the formability of ZEK100, a rare-earth containing magnesium alloy, using an in-house developed technique of pneumatic bulge forming. The thesis pursued innovation of sample preparation, testing, and experimental data analysis in order to create several forming limit diagrams (FLDs) of critical importance for determining a methodology for Mg formability. Samples were bulged through elliptical and circular dies at room temperature, 150 C, and 250 C, in two orientations, rolling direction (RD) and transverse direction (TD), in order to determine temperature dependence and orientation characteristics. The current research concluded ZEK100 is not a suitable alloy for room temperature forming processes used in automotive industries. Little difference between safe and marginal, as well as marginal and failure strain ratios was seen for RD orientation testing, while greater resolution is evident for TD orientation testing. ZEK100 exhibits a temperature dependence in relation to limiting strain between RD and TD.
URI
https://hdl.handle.net/11668/18882
Recommended Citation
Bourgeois, John Briou, "An Investigation of the Formability of ZEK100 Mg Alloy Using Pneumatic Bulge Formability Testing Methods" (2016). Theses and Dissertations. 592.
https://scholarsjunction.msstate.edu/td/592