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Microstructural changes in eutectic tin-lead alloy due to severe bending

Shen, Y.L.; Abeyta, M.C.; Fang, H.E.

Severe plastic deformation in an eutectic tin-lead alloy is studied by imposing fast bending at room temperature, in an attempt to examine the microstructural response in the absence of thermally activated diffusion processes. A change in microstructure due to this purely mechanically imposed load is observed: The tin-rich matrix phase appears to be extruded out of the narrow region between neighboring layers of the lead-rich phase and alterations in the colony structure occur. A micromechanism is proposed to rationalize the experimental observations. © 2001 Elsevier Science B.V. All rights reserved.