The present work is concerned with gaining a better understanding of the factors that control the ductility of wrought magnesium alloys. The ultimate aim is to develop alloys with vastly improved room temperature formability. It is shown that 3D tomography of fractured tensile specimens reveals disk shaped voids aligned more or less at 45 deg. to the tensile axis. These voids are consistent with twin induced void formation. It is also shown that the double twins that produce such voids form in contradiction to Schmid predictions. Finally, it is demonstrated that low levels of rare-earth additions leads to vastly improved texture and ductility in extrusions, as they do in rolled sheet.
History
Event
Magnesium Technology Symposium (2008 : New Orleans, Louisiana)
Pagination
85 - 88
Publisher
Minerals, Metals and Materials Society
Location
New Orleans, Louisiana
Place of publication
Warrendale, Pa.
Start date
2008-03-09
End date
2008-03-13
ISBN-13
9780873397117
Language
eng
Publication classification
E1 Full written paper - refereed; E Conference publication
Copyright notice
2008, TMS
Editor/Contributor(s)
M Pekguleryuz, N Neelameggham, R Beals, E Nyberg
Title of proceedings
TMS 2008: Linking Science and Technology for Global Solutions : TMS 2008 Annual Meeting and Exhibition