Achieving superplasticity in a Bi-Sn alloy processed by high-pressure torsion

C. Wang, T. Langdon show affiliations and emails
Accepted  27 March 2015
Citation: C. Wang, T. Langdon. Achieving superplasticity in a Bi-Sn alloy processed by high-pressure torsion. Lett. Mater., 2015, 5(3) 301-305
BibTex   https://doi.org/10.22226/2410-3535-2015-3-301-305

Abstract

A Bi-Sn alloy was processed by high-pressure torsion (HPT) at room temperature for 10 turns to achieve a homogeneous fine microstructure. Microhardness observations showed that the refined microstructure experienced self-annealing during storage at room temperature. Following HPT processing and storage at room temperature for 35 days, a sample had excellent superplastic properties when testing at an initial tensile strain rate of 1.0 × 10-4 s-1. The enhanced superplastic flow behavior of the fine-grained Bi-Sn alloy was attributed to the homogeneously distributed Bi-Sn and Sn-Sn boundaries after HPT processing since these are preferred sites for grain boundary sliding.

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Cited by (1)

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F. Naghdi, R. Figueiredo, T. Langdon. IOP Conf. Ser.: Mater. Sci. Eng. 194, 012042 (2017). Crossref

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