Hardness and Electrical Resistivity Changes during Ageing of Rapidly Solidified Al–12.5Si–1Mg Alloy
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- Tawfik N. L.
- Physics Department, National Research Centre
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- Hady E. M. Abdel
- Physics Department, National Research Centre
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- Kassem N. E.
- Physics Department, Helwan University
Bibliographic Information
- Other Title
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- Hardness and Electrical Resistivity Cha
- Hardness and Electrical Resistivity Changes during Ageing of Rapidly Solidified Al–12.5Si–1Mg Alloy
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Abstract
Ribbons with the composition Al–12.5Si–1Mg were prepared by melt spinning. X-ray diffraction of as melt spun ribbons showed complete solubility of Si in aluminum. The as melt spun resistivity was 36 μΩ cm for ribbons of 24 μm thickness. This value relaxes to 9.0 μΩ cm on prolonged annealing. The hardness of the as melt spun ribbons was 1500 MN/m2, and relaxes to reach a value of 800 MN/m2 after prolonged annealing. The activation energy estimated from isothermal ageing ranged from 1.05 to 1.26 eV. An equation is given to fit the kinetics of relaxation. Discussion of resistivity and hardness relaxation is given and is related to ordering and silicon precipitation.
Journal
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- Materials Transactions, JIM
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Materials Transactions, JIM 38 (5), 401-405, 1997
The Japan Institute of Metals
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Keywords
Details 詳細情報について
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- CRID
- 1390001204245495808
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- NII Article ID
- 10002452477
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- NII Book ID
- AA10699969
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- COI
- 1:CAS:528:DyaK2sXkt1aku7Y%3D
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- ISSN
- 2432471X
- 09161821
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- NDL BIB ID
- 4231127
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed