Effect of a Scandium addition on an Al-2% Si alloy processed by ECAP
Effect of a Scandium addition on an Al-2% Si alloy processed by ECAP
Two alloys, Al-2% Si and Al-2% Si-0.25% Sc, were subjected to equal-channel angular pressing (ECAP) up to a maximum of 4 passes using route Bc at room temperature. This processing gave ultrafine-grained microstructures with grain sizes of ~0.70 µm without Sc and ~0.30 µm with the 0.25% Sc addition. The improvement in the mechanical properties of the Al-2% Si alloy due to the Sc addition was studied using a ball-indentation technique (BIT). These tests showed that the addition of 0.25% Sc decreased the grain size of the Al-2% Si alloy in the cast condition from 40 to 25 µm with an increase in the ultimate tensile strength (UTS) from ~106 to ~185 MPa. In addition, ECAP of the Al-2% Si-0.25% Sc alloy gave a UTS of ~355 MPa which was ~30% higher than the Al-2% Si alloy without the Sc addition. This increase is due to the presence of fine Al3Sc precipitates.
99-106
Venkateswarlu, K.
5bdfe52c-a221-4f27-83fa-638f30e91bb0
Rajinikanth,, V.
40194659-020c-46ce-9784-d4844aac78e3
Ray, A.K.
fc1b6d3a-ab6e-475b-863b-beef6e1ea124
Xu, C.
66441ee5-1017-4177-abb2-7875c09bdc66
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2010
Venkateswarlu, K.
5bdfe52c-a221-4f27-83fa-638f30e91bb0
Rajinikanth,, V.
40194659-020c-46ce-9784-d4844aac78e3
Ray, A.K.
fc1b6d3a-ab6e-475b-863b-beef6e1ea124
Xu, C.
66441ee5-1017-4177-abb2-7875c09bdc66
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Venkateswarlu, K., Rajinikanth,, V., Ray, A.K., Xu, C. and Langdon, T.G.
(2010)
Effect of a Scandium addition on an Al-2% Si alloy processed by ECAP.
Reviews on Advanced Materials Science, 25 (2), .
Abstract
Two alloys, Al-2% Si and Al-2% Si-0.25% Sc, were subjected to equal-channel angular pressing (ECAP) up to a maximum of 4 passes using route Bc at room temperature. This processing gave ultrafine-grained microstructures with grain sizes of ~0.70 µm without Sc and ~0.30 µm with the 0.25% Sc addition. The improvement in the mechanical properties of the Al-2% Si alloy due to the Sc addition was studied using a ball-indentation technique (BIT). These tests showed that the addition of 0.25% Sc decreased the grain size of the Al-2% Si alloy in the cast condition from 40 to 25 µm with an increase in the ultimate tensile strength (UTS) from ~106 to ~185 MPa. In addition, ECAP of the Al-2% Si-0.25% Sc alloy gave a UTS of ~355 MPa which was ~30% higher than the Al-2% Si alloy without the Sc addition. This increase is due to the presence of fine Al3Sc precipitates.
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Published date: 2010
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 170759
URI: http://eprints.soton.ac.uk/id/eprint/170759
ISSN: 1605-8127
PURE UUID: 4c1df480-eb1c-4a28-91c7-b8f2a9397348
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Date deposited: 11 Jan 2011 10:05
Last modified: 08 Jan 2022 02:56
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Author:
K. Venkateswarlu
Author:
V. Rajinikanth,
Author:
A.K. Ray
Author:
C. Xu
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