caa a22 4500 463233794 CHVBK 20180405153250.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10853-006-1335-6 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1335-6 Materials behaviour and intermetallics characteristics in the reaction between SnAgCu and Sn-Pb solder alloys [Elektronische Daten] [Changqing Liu, Zhiheng Huang, Paul Conway, Rachel Thomson] The paper compares theoretical calculations with experimental data, to identify the metallurgical mechanisms with respect to the rework or repair that may be encountered in the transition period from Sn-Pb to Pb-free soldering. Thermodynamic calculations have been carried out to study material behaviour and possible formation of intermetallic precipitates during the reaction between Sn-Pb and Sn-Ag-Cu Pb-free alloys. Two Sn-Ag-Cu alloys that are relevant to current industrial interests, namely Sn-3.9Ag-0.6Cu* (known as ‘405 alloy' in Europe and North America), and Sn-3.0Ag-0.5Cu (known as ‘305' alloy in Asia), were reacted with different contamination levels of eutectic Sn-37Pb solder. The variables examined included those related to both the materials and processes, such as composition, temperature and cooling rate. Together these are the primary drivers with respect to the resultant solder microstructures, which were studied using scanning electron microscopy (SEM). Nanoindentation, which is suitable for the ultra-fine and complex microstructures, was also used to investigate the micromechanical properties, including hardness and elastic modulus, at both ambient and elevated temperatures. The results from this work provide guidance as to the consequence for microstructural evolution and hence mechanical integrity when small amounts of Pb exist in Pb-free alloys. Springer Science+Business Media, LLC, 2007 Liu Changqing Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut Huang Zhiheng Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut Conway Paul Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut Thomson Rachel Institute of Polymer Technology and Materials Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/11(2007-06-01), 4076-4086 0022-2461 42:11<4076 2007 42 10853 https://doi.org/10.1007/s10853-006-1335-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1335-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Changqing Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut NATIONALLICENCE 700 1- Huang Zhiheng Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut NATIONALLICENCE 700 1- Conway Paul Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut NATIONALLICENCE 700 1- Thomson Rachel Institute of Polymer Technology and Materials Engineering, Loughborough University, LE11 3TU, Loughborough, UK aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/11(2007-06-01), 4076-4086 0022-2461 42:11<4076 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer