| TI: |
Title
Comparison of experimental, calculated and observed values for
electrical and thermal conductivity of aluminium alloys |
| AU: |
Author
Olafsson, P; Sandstrom, R; Karlsson, A |
| AF: |
Author Affiliation
Royal Institute of Technology (Stockholm) (All Authors) |
| SO: |
Source
Journal of Materials Science (UK), 32, (16), 4383-4390, 15 Aug.
1997 |
| IS: |
ISSN
0022-2461 |
| NT: |
Notes
Graphs. 18 ref. |
| PB: |
Publisher
UK |
| AB: |
Abstract
A model has been developed for calculating the electrical rsistivity
of commercial aluminium alloys from composition and heat treatments
using the Matthiessen rule. The model is based on the approximation
that the solubility of the alloying elements in heat treated alloys
is equivalent to the equilibrium solubility at a higher temperature.
These temperatures were determined from heat treatment data. The
resistivity of a wide range of commercial alloys was calculated
using the model, showing an agreement with most observed resistivity
values of within 3 n Omega m, except for alloys with special composition
characteristics. According to the model, magnesium and manganese
are important contributors to the resistivity for all main groups
of alloys. In heat treated alloys the contribution of precipitates
is 6-17% of the total resistivity. Thermal conductivity was calculated
for alloys given in the literature using the Wiedeman-Franz law
and the calculated resistivity. The calculated thermal conductivity
agreed with the experimental values for the AlMg-alloys, but it
was lower than the experimental values for pure aluminium and
the AlCu alloys in the annealed condition. |
| LA: |
Language
English |
| PY: |
Publication Year
1997 |
| PT: |
Publication Type
Journal Article |
| DE: |
Descriptors
Al Cu Mg Ni alloys; Al Cu Mg Ni alloys; Al Cu Mg Ni alloys; Al
Cu Mg Ni alloys; Al Cu Mn alloys; Al Cu Mn alloys; Al Mg Si alloys;
Al Mg Si Cu alloys; Al Mg Si Mn Cu Cr alloys; Al Mg Si Pb Bi alloys;
Al Zn alloys; Al Zn alloys; Al Zn alloys; Al Zn alloys; Al Zn
Mg alloys; Al Zn Mg Cu alloys; Al Zn Mg Mn alloys; Aluminum base
alloys; Aluminum base alloys; Aluminum base alloys; Aluminum base
alloys --Thermal properties; Journal Article; Mathematical models;
Resistivity --Heating effects; Thermal conductivity --Heating
effects |
| ML: |
Material
2011 AL Aluminum base alloys; 2219 AL Aluminum base alloys; 2618
AL Aluminum base alloys; 6053 AL Aluminum base alloys; 6061 AL
Aluminum base alloys; 6101 AL Aluminum base alloys; 6066 AL Aluminum
base alloys; 6262 AL Aluminum base alloys; 7005 AL Aluminum base
alloys; 7020 AL Aluminum base alloys; 7039 AL Aluminum base alloys;
7072 AL Aluminum base alloys; 7079 AL Aluminum base alloys; 7002
AL Aluminum base alloys |
| CL: |
Classification
R3 Physical Properties; R4 Electrical/Magnetic Properties |
| SF: |
Subfile
Aluminium Industry Abstracts |
| AN: |
Accession Number
199801-R3-0005 |
