Texture Change in Pure Mg and Mg-1.5wt% Mn Casting Alloy During Compressive Creep-Deformation

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Proceedings titleMagnesium Technology 2010
ConferenceTMS Annual Meeting and Exhibition, 2010, February 14-18, 2010, Seattle, WA
Pages249251; # of pages: 3
SubjectMagnesium; Texture; Creep
AbstractMost magnesium alloys undergo creep under the service conditions of the automotive powertrain components (50- 100MPa, 175-200ºC). Texture studies on creep-tested pure Mg and Mg-1.5wt%Mn casting alloys were performed via Neutron Diffraction (ND). Analysis of the as-cast pure Mg, before creep testing indicated that there is preferred orientation with the c-axis of the HCP grains perpendicular to the growth direction of the columnar grains (and parallel to the longitudinal axis of the casting). Following compressive-creep testing (15MPa, 175ºC, 150hrs.), the maximum intensity of the texture in pure Mg dropped notably, indicating a rotation of basal-plane normals. No significant change in the maximum intensity of texture was observed in Mg-1.5%Mn samples creep tested under the same conditions. Creep tests conducted at 50MPa (which is above the yield strength of the alloys) and at 150ºC on both pure Mg and Mg-1.5%Mn samples resulted in the rotation of the basal plane normals towards the compression axis.
Publication date
AffiliationNRC Canadian Neutron Beam Centre; National Research Council Canada
Peer reviewedYes
NPARC number16959081
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Record identifierbbdbff63-aab4-45e2-b8c6-0024987bc497
Record created2011-03-08
Record modified2016-05-09
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