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000904933 1001_ $$0P:(DE-HGF)0$$aZubair, M.$$b0$$eCorresponding author
000904933 245__ $$aCo-deformation between the metallic matrix and intermetallic phases in a creep-resistant Mg-3.68Al-3.8Ca alloy
000904933 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2021
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000904933 520__ $$aThe microstructure of Mg-Al-Ca alloys consists of a hard intra- and intergranular eutectic Laves phase network embedded in a soft α-Mg matrix. For such heterogeneous microstructures, the mechanical response and co-deformation of both phases under external load are not yet fully understood. We therefore used nano- and microindentation in combination with electron microscopy to study the deformation behaviour of an Mg-3.68Al-3.8Ca alloy.We found that the hardness of the Mg2Ca phase was significantly larger than the α-Mg phase and stays constant within the measured temperature range. The strain rate sensitivity of the softer α-Mg phase and of the interfaces increased while activation volume decreased with temperature. The creep deformation of the Mg2Ca Laves phase was significantly lower than the α-Mg phase at 170 °C. Moreover, the deformation zone around and below microindents was dependant on the matrix orientation and was influenced by the presence of Laves phases. Most importantly, slip transfer from the α-Mg phase to the (Mg,Al)2Ca Laves phase occurred, carried by the basal planes. Based on the observed orientation relationship and active slip systems, a slip transfer mechanism from the soft α-Mg phase to the hard Laves phase is proposed. Further, we present implications for future alloy design strategies.
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000904933 536__ $$0G:(GEPRIS)437412665$$aSFB 1394 A05 - Versetzungen in komplexen intermetallischen Phasen (A05) (437412665)$$c437412665$$x2
000904933 536__ $$0G:(GEPRIS)437513708$$aMultiphysikbeschreibung von Mg-Kompositen auf Kornebene (C01) (437513708)$$c437513708$$x3
000904933 536__ $$0G:(GEPRIS)437514011$$aSFB 1394 C02 - Ko-Verformung von (inter)metallischen Kompositen (C02) (437514011)$$c437514011$$x4
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000904933 7001_ $$0P:(DE-HGF)0$$aSandlöbes-Haut, S.$$b1
000904933 7001_ $$0P:(DE-HGF)0$$aLipińska-Chwałek, M.$$b2
000904933 7001_ $$0P:(DE-HGF)0$$aWollenweber, M. A.$$b3
000904933 7001_ $$0P:(DE-HGF)0$$aZehnder, C.$$b4
000904933 7001_ $$0P:(DE-Juel1)130824$$aMayer, J.$$b5
000904933 7001_ $$0P:(DE-HGF)0$$aGibson, J. S. K.-L.$$b6
000904933 7001_ $$0P:(DE-HGF)0$$aKorte-Kerzel, S.$$b7
000904933 773__ $$0PERI:(DE-600)2015480-X$$a10.1016/j.matdes.2021.110113$$gVol. 210, p. 110113 -$$p110113$$tMaterials and design$$v210$$x0141-5530$$y2021
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