TY - JOUR
T1 - Load partition during hot deformation of AlSi12 and AlSi10Cu6Ni2 alloys
T2 - a quantitative evaluation of the stiffness of Si networks
AU - Canelo-Yubero, David
AU - Etzlstorfer, Christoph
AU - Koos, Robert
AU - Germann, Holger
AU - Steffens, Thomas
AU - Stark, Andreas
AU - Boller, Elodie
AU - Requena, Guillermo
PY - 2020/10/1
Y1 - 2020/10/1
N2 - An eutectic AlSi12 alloy contains a rigid 3D network formed by the eutectic Si in the as-cast condition, which disintegrates during solution treatment. Synchrotron tomography proved that a near eutectic AlSi10Cu6Ni2 alloy also exhibits a 3D network with higher and more stable stiffness due to the presence of aluminides that retain the initial as-cast microstructure during the solubilization treatment and increase the volume fraction of rigid phases. In order to evaluate the load borne by different phases during hot deformation, in situ synchrotron experiments were carried out revealing an underestimation of the load transfer from the soft α-Al matrix to the hard silicon 3D network in the AlSi12 alloy. By taking into account the additional stiffness introduced by the local interconnectivity, the stresses in different phases in the near eutectic AlSi10Cu6Ni2 alloy were calculated. Additionally, the analysis of the aluminide Al2Cu allowed to identify its influence in the global damage of the hybrid 3D network formed by the Si and aluminides in the near eutectic AlSi10Cu6Ni2 alloy.
AB - An eutectic AlSi12 alloy contains a rigid 3D network formed by the eutectic Si in the as-cast condition, which disintegrates during solution treatment. Synchrotron tomography proved that a near eutectic AlSi10Cu6Ni2 alloy also exhibits a 3D network with higher and more stable stiffness due to the presence of aluminides that retain the initial as-cast microstructure during the solubilization treatment and increase the volume fraction of rigid phases. In order to evaluate the load borne by different phases during hot deformation, in situ synchrotron experiments were carried out revealing an underestimation of the load transfer from the soft α-Al matrix to the hard silicon 3D network in the AlSi12 alloy. By taking into account the additional stiffness introduced by the local interconnectivity, the stresses in different phases in the near eutectic AlSi10Cu6Ni2 alloy were calculated. Additionally, the analysis of the aluminide Al2Cu allowed to identify its influence in the global damage of the hybrid 3D network formed by the Si and aluminides in the near eutectic AlSi10Cu6Ni2 alloy.
UR - http://www.scopus.com/inward/record.url?scp=85087719016&partnerID=8YFLogxK
U2 - 10.1007/s10853-020-05023-5
DO - 10.1007/s10853-020-05023-5
M3 - Article
AN - SCOPUS:85087719016
SN - 0022-2461
VL - 55
SP - 14558
EP - 14570
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 29
ER -