Print Email Facebook Twitter Analysis of SN-BI solders Title Analysis of SN-BI solders: X-ray micro computed tomography imaging and microstructure characterization in relation to properties and liquid phase healing potential Author Siroky, Georg (Materials Center Leoben GmbH) Kraker, Elke (Materials Center Leoben GmbH) Rosc, Jördis (Materials Center Leoben GmbH) Kieslinger, Dietmar (ZKW Elektronik GmbH) Brunner, Roland (Materials Center Leoben GmbH) van der Zwaag, S. (TU Delft Novel Aerospace Materials) Kozeschnik, Ernst (Technische Universität Wien) Ecker, Werner (Materials Center Leoben GmbH) Date 2021 Abstract This work provides an analysis of X-ray micro computed tomography data of Sn-xBi solders with x = 20, 30, 35, 47, 58 wt.% Bi. The eutectic thickness, fraction of eutectic and primary phase are analyzed. Furthermore, the 3D data is evaluated by means of morphology parameters, such as, shape complexity, flatness, elongation and mean intercept length tensor. The investigated alloys are categorized in three groups based on their morphology, which are described as ‘complex dominant’, ‘complex- equiaxed’ and ‘mixed’. The mechanical behavior of Sn-Bi alloys in the semi-solid configuration and the correlation with microstructural parameters are discussed. A varying degree of geometric anisotropy of the investigated alloys is found through the mean intercept length tensor. Representative volume element models for finite element simulations (RVE-FEM) are created from tomography data of each alloy to analyze a correlation of geometric and elastic anisotropy. The simulations reveal an elastic isotropic behavior due to the small difference of elastic constants of primary and eutectic phase. A discussion of properties in the semi-solid state and liquid phase healing is provided. Subject AnisotropyComputed tomographyElasticFEMHealingMorphologyRVESemi-solidSolderX-ray To reference this document use: http://resolver.tudelft.nl/uuid:512816ef-6baa-46db-a26a-cf4206d46aa7 DOI https://doi.org/10.3390/ma14010153 ISSN 1996-1944 Source Materials, 14 (1), 1-22 Part of collection Institutional Repository Document type journal article Rights © 2021 Georg Siroky, Elke Kraker, Jördis Rosc, Dietmar Kieslinger, Roland Brunner, S. van der Zwaag, Ernst Kozeschnik, Werner Ecker Files PDF materials_14_00153_v2.pdf 4.66 MB Close viewer /islandora/object/uuid:512816ef-6baa-46db-a26a-cf4206d46aa7/datastream/OBJ/view