TY - JOUR
T1 - Solidification of Sn-0.7Cu-0.15Zn solder
T2 - In situ observation
AU - Zeng, Guang
AU - McDonald, Stuart D.
AU - Gourlay, Christopher M.
AU - Uesugi, Kentaro
AU - Terada, Yasuko
AU - Yasuda, Hideyuki
AU - Nogita, Kazuhiro
N1 - Funding Information:
We gratefully acknowledge financial support from the University of Queensland-Nihon Superior collaborative research program. Synchrotron X-ray radiography experiments and micro-XRF mapping were performed at the Japan Synchrotron Radiation Research Institute (JASRI) on BL20XU and BL37XU of the SPring-8 synchrotron, under Proposal Nos. 2011B1048 and 2012B1440, funded by the Australian Synchrotron international synchrotron access program (Project ID: AS/IA114/4743 and AS/IA124/6235). The authors thank Mr. J. Read of The University of Queensland for valuable discussions; Dr. J. Khan of the Queensland Node of the Australian National Fabrication Facility (ANFF-Q) at UQ for use of the DSC facility; and sample preparation and support staff from the Department of Adaptive Machine Systems, Osaka University, Japan for experimental assistance. The authors acknowledge the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis of UQ. G. Zeng is financially supported by a University of Queensland International (UQI) Scholarship and a China Scholarship Council (CSC) Scholarship.
PY - 2014/2
Y1 - 2014/2
N2 - High resolution time-resolved X-ray imaging with synchrotron radiation was used for in situ observation of four distinct events during solidification of a Sn-0.7Cu-0.15Zn solder despite small composition and density differences. These included bSn dendrite growth, Sn-Cu6Sn5 univariant eutectic growth, microporosity formation, and a polyphase reaction in the last stages of freezing. The development of microstructure was described quantitatively by tracking the loci of dendrite tips during grain growth. The results have implications for microstructure control and the understanding of structure-property relationships in Sn-Cu-Zn lead-free solders.
AB - High resolution time-resolved X-ray imaging with synchrotron radiation was used for in situ observation of four distinct events during solidification of a Sn-0.7Cu-0.15Zn solder despite small composition and density differences. These included bSn dendrite growth, Sn-Cu6Sn5 univariant eutectic growth, microporosity formation, and a polyphase reaction in the last stages of freezing. The development of microstructure was described quantitatively by tracking the loci of dendrite tips during grain growth. The results have implications for microstructure control and the understanding of structure-property relationships in Sn-Cu-Zn lead-free solders.
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U2 - 10.1007/s11661-013-2008-0
DO - 10.1007/s11661-013-2008-0
M3 - Article
AN - SCOPUS:84896794054
SN - 1073-5623
VL - 45
SP - 918
EP - 926
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 2
ER -