An examination of microstructural evolution in a Pb–Sn eutectic alloy processed by high-pressure torsion and subsequent self-annealing
Authors: Zhang, N.X., Kawasaki, M., Huang, Y. and Langdon, T.G.
Journal: Materials Science and Engineering: A
Volume: 802
ISSN: 0921-5093
DOI: 10.1016/j.msea.2020.140653
Abstract:The Pb–Sn alloy has a wide use in the electronic, energy storage and nuclear industries and a fine-grained Pb–Sn alloy may open up new possibilities for applications in these industries. In order to understand the behavior of grain refinement, a Pb-62% Sn eutectic alloy was processed by high-pressure torsion (HPT), stored at room temperature (RT) and then the microstructures of the alloy after HPT were repeatedly investigated during the course of self-annealing using electron backscatter diffraction, scanning electron microscopy and transmission electron microscopy. It is demonstrated that there is a large fraction of twin boundaries with a twin relationship of 62.8°<100> in the microstructure of the initial as-cast condition. Due to the presence of the high imposed pressure, the mobility of Ʃ21 boundaries at 71° is greatly favoured during processing by HPT. After the high pressure is removed, the mobility of dislocation-twin boundaries near 62.8°<100> is then favoured. Processing by HPT significantly increases the solubility of Sn in the Pb phase. The supersaturated state of Sn in Pb is not stable during self-annealing at RT and instead a decomposition of Sn from the Pb-rich phase is observed after storage for 16 days. The main mechanism for this decomposition is lattice diffusion.
https://eprints.bournemouth.ac.uk/34946/
Source: Scopus
An examination of microstructural evolution in a Pb-Sn eutectic alloy processed by high-pressure torsion and subsequent self-annealing
Authors: Zhang, N.X., Kawasaki, M., Huang, Y. and Langdon, T.G.
Journal: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume: 802
eISSN: 1873-4936
ISSN: 0921-5093
DOI: 10.1016/j.msea.2020.140653
https://eprints.bournemouth.ac.uk/34946/
Source: Web of Science (Lite)
An examination of microstructural evolution in a Pb-Sn eutectic alloy processed by high-pressure torsion and subsequent self-annealing
Authors: Zhang, N.X., Kawasaki, M., Huang, Y. and Langdon, T.G.
Journal: Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume: 802
Pages: 140653(1)-140653(12)
Publisher: Elsevier
ISSN: 0921-5093
DOI: 10.1016/j.msea.2020.140653
Abstract:The Pb-Sn alloy has a wide use in the electronic, energy storage and nuclear industries and a fine-grained Pb-Sn alloy may open up new possibilities for applications in these industries. In order to understand the behavior of grain refinement, a Pb-62% Sn eutectic alloy was processed by high-pressure torsion (HPT), stored at room temperature (RT) and then the microstructures of the alloy after HPT were repeatedly investigated during the course of self-annealing using electron backscatter diffraction, scanning electron microscopy and transmission electron microscopy. It is demonstrated that there is a large fraction of twin boundaries with a twin relationship of 62.8°<100> in the microstructure of the initial as-cast condition. Due to the presence of the high imposed pressure, the mobility of Ʃ21 boundaries at 71° is greatly favoured during processing by HPT. After the high pressure is removed, the mobility of dislocation-twin boundaries near 62.8°<100> is then favoured. Processing by HPT significantly increases the solubility of Sn in the Pb phase. The supersaturated state of Sn in Pb is not stable during self-annealing at RT and instead a decomposition of Sn from the Pb-rich phase is observed after storage for 16 days. The main mechanism for this decomposition is lattice diffusion.
https://eprints.bournemouth.ac.uk/34946/
Source: Manual
Preferred by: Yi Huang
An examination of microstructural evolution in a Pb-Sn eutectic alloy processed by high-pressure torsion and subsequent self-annealing.
Authors: Zhang, N.X., Kawasaki, M., Huang, Y. and Langdon, T.G.
Journal: Materials Science and Engineering A
Volume: 802
Issue: January
ISSN: 0921-5093
Abstract:The Pb-Sn alloy has a wide use in the electronic, energy storage and nuclear industries and a fine-grained Pb-Sn alloy may open up new possibilities for applications in these industries. In order to understand the behavior of grain refinement, a Pb-62% Sn eutectic alloy was processed by high-pressure torsion (HPT), stored at room temperature (RT) and then the microstructures of the alloy after HPT were repeatedly investigated during the course of self-annealing using electron backscatter diffraction, scanning electron microscopy and transmission electron microscopy. It is demonstrated that there is a large fraction of twin boundaries with a twin relationship of 62.8°<100> in the microstructure of the initial as-cast condition. Due to the presence of the high imposed pressure, the mobility of Ʃ21 boundaries at 71° is greatly favoured during processing by HPT. After the high pressure is removed, the mobility of dislocation-twin boundaries near 62.8°<100> is then favoured. Processing by HPT significantly increases the solubility of Sn in the Pb phase. The supersaturated state of Sn in Pb is not stable during self-annealing at RT and instead a decomposition of Sn from the Pb-rich phase is observed after storage for 16 days. The main mechanism for this decomposition is lattice diffusion.
https://eprints.bournemouth.ac.uk/34946/
Source: BURO EPrints