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dc.contributor.authorGryguc, Andrew
dc.contributor.authorShaha, Sugrib K.
dc.contributor.authorBehravesh, Seyed Behzad
dc.contributor.authorJahed, Hamid
dc.contributor.authorWells, Mary
dc.contributor.authorWilliams, Bruce W.
dc.contributor.authorSu, X. 19:58:13 (GMT) 19:58:13 (GMT)
dc.descriptionThe final publication is available at Elsevier via © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
dc.description.abstractTensile and strain-controlled fatigue tests were performed to investigate the influence of forging on the performance of cast AZ80 magnesium alloy. The obtained microstructural analysis showed that the as-cast AZ80 magnesium alloy has dendritic α-Mg phase with eutectic Mg17Al12 morphology and a random texture. In contrast, the forged samples showed refined grains and a strong basal texture. During tensile testing, a maximum yield and ultimate tensile strength of 182 MPa and 312 MPa were obtained for the forged samples, representing increases of 121% and 33%, respectively, from the as-cast condition. At the same time, a significant improvement (73%) in ductility was obtained in forged samples. It was also observed that the forged samples achieved comparatively longer fatigue life under strain-controlled cyclic loading. Analysis of the fracture surfaces showed that a cleavage-type morphology was typical for the as-cast samples, while the occurrence of dimples and other evidence of plastic deformation were identified in the fracture surfaces of the forged specimens, indicating a more ductile response. Forging caused grain refinement and texture modification, both of which enhance alloy performance by improving strength and ductility, and leading to longer fatigue life. Strain and energy-based models were investigated for their suitability to predict the life of the forged material. Both the Smith-Watson Topper and the Jahed-Varvani energy-based models gave reliable life prediction.en
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC) through the Automotive Partnership Canada (APC) under APCPJ 459269–13 grant with contributions from Multimatic Technical Centre, Ford Motor Company, and Centerline Windsor are acknowledged.en
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.subjectFatigue characterizationen
dc.subjectFatigue modelingen
dc.titleMonotonic and cyclic behaviour of cast and cast-forged AZ80 Mgen
dcterms.bibliographicCitationGryguc, A., Shaha, S. K., Behravesh, S. B., Jahed, H., Wells, M., Williams, B., & Su, X. (2017). Monotonic and cyclic behaviour of cast and cast-forged AZ80 Mg. International Journal of Fatigue, 104, 136–149.
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen

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