Shot Peening of Cast Magnesium Alloys

Author:  Ludian, Hilpert, Kiefer, Wagner
Source:  Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany (pps. 3
Doc ID:  2002048
Year of Publication:  2002
Abstract:  
Authors Tomasz Ludian 1), Matthias Hilpert 2), Armin Kiefer 3) and Lothar Wagner 1) 1) Chair of Physical Metallurgy and Materials Technology, Technical University of Brandenburg at Cottbus, Cottbus, Germany 2) Otto Fuchs Metallwerke, Meinerzhagen, Germany 3) OSK Kiefer, Oppurg, Germany Abstract The fatigue behavior of the high-pressure die cast magnesium alloys AM50 and AZ91 was investigated. In both alloys, cast defects led to marked scatter in fatigue performance. To study potential improvements in fatigue behavior, shot peening was performed using various Almen intensities. Both alloys showed marked improvements in fatigue strength compared to an electropolished reference.