טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentWeisel Eran
SubjectAn Investigation of the Mechanical Properties of RS66
Magnesium Alloy
DepartmentDepartment of Mechanical Engineering
Supervisors Professor Daniel Rittel
Research Professor E Dan Shechtman
Full Thesis textFull thesis text - English Version


Abstract

Magnesium (Mg) alloys in general have great potential as a replacement for aluminum alloys in a variety of applications, such as the vehicle- and aircraft- industries. This is due mostly to their light weight, high stiffness, machinability and superior specific properties (specific strength and specific mass - density).

RS66 is an advanced Mg alloy which showed promising properties in preliminary testing, and is tested in two forms - RS66 and a similar alloy having undergone RE (reciprocal extrusion) - RS66-RE. The present work investigates the static and dynamic properties of these alloys as well as their failure modes in both tension and compression, as these properties have not been studied previously, in an attempt to conclude whether the RE process improves the alloy's properties. In addition to mechanical testing, samples for electron microscopy (SEM) were taken from the broken specimens.

Many interesting results are observed, and an attempt is made to offer a microscopic explanation to each viewed phenomenon. The alloys behave similarly but not identically, while both exhibit strain rate sensitivity only in tension and both have many asymmetries between the tensile and compressive properties.