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T-Shaped equi-channel angular pressing of Pb-Sn eutectic and its tensile properties

Srinivas Rao, V., Kashyap, B.P., Prabhu, N. and Hodgson, P.D. 2008, T-Shaped equi-channel angular pressing of Pb-Sn eutectic and its tensile properties, Materials science and engineering. A. Structural materials : properties, microstructures and processing, vol. 486, no. 1, pp. 341-349.


Title T-Shaped equi-channel angular pressing of Pb-Sn eutectic and its tensile properties
Author(s) Srinivas Rao, V.
Kashyap, B.P.
Prabhu, N.
Hodgson, P.D.
Journal name Materials science and engineering. A. Structural materials : properties, microstructures and processing
Volume number 486
Issue number 1
Start page 341
End page 349
Publisher Elsevier SA
Place of publication Lausanne, Switzerland
Publication date 2008-07
ISSN 0921-5093
1873-4936
Keyword(s) equi-channel angular pressing
grain growth
ductility
constitutive relationship
Summary Equi-channel angular pressing (ECAP) of a Pb–Sn eutectic alloy up to six passes in a T-shaped die, rather than a conventional L-shaped die, was studied for grain refinement. The effect of ECAP on the hardness and tensile properties was studied. Microstructure predominately changed in the early part of the ECAP process and became equiaxed and uniformly distributed in both the longitudinal and the transverse sections after four passes. There occurred substantial softening over the first two passes—hardness of 10 Hv, yield strength of 14.2 MPa and tensile strength of 16.3 MPa in the as-cast condition decreased upon two passes to 6 Hv, 9.7 MPa and 13.0 MPa, respectively. The ductility (% elongation) increased drastically from <50% in the as-cast condition to 150% upon two passes, and further increased to 230% after four passes. Various tensile properties and concurrent microstructural evolution were used to develop a mutual relationship among them.
Language eng
Field of Research 091499 Resources Engineering and Extractive Metallurgy not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2008
Copyright notice ©2007 Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30017922

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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