Effect of equal-channel angular pressing on the mechanical behavior of a Bi-Sn eutectic alloy

7th International Conference on Nanomaterials by Severe Plastic Deformation

Naghdi, Fariba^1 ; Figueiredo, Roberto B.^2,3 ; Langdon, Terence G.^1,3

Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton

SO17 1BJ, United Kingdom^1

Department of Materials Engineering and Civil Construction, Universidade Federal de Minas Gerais, Belo Horizonte, MG

31270-901, Brazil^2

Departments of Aerospace and Mechanical Engineering and Materials Science, University of Southern California, Los Angeles

CA

90089-1453, United States^3

关键词: As-cast;    Elongation to failure;    Eutectic alloys;    Initial strains;    Mechanical behavior;    Processing Route;    Sn alloys;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/194/1/012042/pdf
DOI  :  10.1088/1757-899X/194/1/012042

来源: IOP

【 摘 要 】

Equal-channel angular pressing (ECAP) was utilized to process a Bi-42Sn eutectic alloy at room temperature using processing route A for 1, 2, 4, and 8 passes. Tensile testing was performed at room temperature under initial strain rates in the range of 1.0 × 10-5to 1.0 × 10-2s-1. The results demonstrate that processing by ECAP improves the ductility in this material and the elongations to failure increased with decreasing strain rate in all samples. The largest elongation to failure, ∼1300%, was recorded in the sample processed by ECAP for 8 passes at an initial strain rate of 1.0 × 10-5s-1. This elongation is much improved by comparison with the as-cast Bi-42Sn alloy.