Design and development of an experimental wrought aluminum alloy for use at elevated temperatures
Article
Received:
- 745 Downloads
- 119 Citations
Abstract
A new wrought aluminum alloy has been designed having high room temperature strength (e.g., 0.2 pct P.S. 520 MPa) combined with improved creep resistance at temperatures in the range 150° to 220 °C. The alloy is A1-6.3 pct Cu-0.5 pct Mg-0.5 pct Ag-0.5 pct Mn-0.2 pct Zr and it is hardened by a new precipitate which forms on the {111} planes and appears to be highly stable at elevated temperatures. Details are given of the principles underlying the development of the alloy and of the preliminary assessment that has been made of mechanical properties. The alloy, or compositions close to it, also has potential for welded applications.
Keywords
Metallurgical Transaction Tensile Property Experimental Alloy Peak Hardness Series Alloy
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Preview
Unable to display preview. Download preview PDF.
References
- 1.Aerospace Structural Materials Handbook, U.S. Department of Defense, 1984.Google Scholar
- 2.J. M. Silcock:J. Inst. Metals, 1960, vol. 89, pp. 203–10.Google Scholar
- 3.I. J. Polmear:Trans. AIME, 1964, vol. 230, pp. 1331–39.Google Scholar
- 4.R. N. Wilson and P. J. E. Forsyth:J. Inst. Metals, 1966, vol. 94, pp. 8–13.Google Scholar
- 5.J. M. Sileock, T. J. Heal, and H. K. Hardy:J. Inst. Metals, 1953-54, vol. 82, pp. 239–48.Google Scholar
- 6.D. J. Chellman: NASA Contractor Report 165965, Nov. 1982.Google Scholar
- 7.I. J. Polmear:Physics of Materials, D. W. Borland, L. M. Clareborough, and A. J. C. Moore, eds., Griffin Press, Melbourne, Australia, 1979, pp. 209–19.Google Scholar
- 8.J. H. Auld, J. T. Vietz, and I. J. Polmear:Nature, 1966, vol. 209, pp. 703–04.CrossRefADSGoogle Scholar
- 9.J. T. Vietz and I. J. Polmear:J. Inst. Metals, 1966, vol. 94, pp. 410–19.Google Scholar
- 10.N. Sen and D. R. T. West:The Mechanism of Phase Transformations in Crystalline Solids, Institute of Metals, London, 1969, pp. 49–52.Google Scholar
- 11.J. H. Auld and J. T. Vietz:The Mechanism of Phase Transformations in Crystalline Solids, Institute of Metals, London, 1969, pp. 77–78.Google Scholar
- 12.J. H. Taylor, B. A. Parker, and I. J. Polmear:Metal Science, 1978, vol. 12, pp. 478–82.CrossRefGoogle Scholar
- 13.R. J. Chester and I. J. Polmear:Micron, 1980, vol. 10, pp. 311–12.Google Scholar
- 14.R. J. Chester and I. J. Polmear:Proc. 7th International Light Metals Congress, Leoben, Aluminium-Verlag, 1981, pp. 58–59.Google Scholar
- 15.R. J. Chester and I. J. Polmear:The Metallurgy of Light Alloys, Institution of Metallurgists, London, 1983, pp. 75–81.Google Scholar
- 16.J. H. Auld:Acta Cryst., 1972, vol. 28A, p. 98.Google Scholar
- 17.S. Kerry and V. D. Scott:Metal Science, 1984, vol. 18, pp. 289–94.CrossRefGoogle Scholar
- 18.A. R. Arumalla and I. J. Polmear:7th International Conference on the Strength of Metals and Alloys, Montreal, Pergamon Press, 1985, pp. 453–58.Google Scholar
- 19.K. M. Knowles:Acta Cryst., in press.Google Scholar
- 20.I. J. Her:Modern Casting, 1969, vol. 55, no. 1, pp. 55–59.Google Scholar
- 21.M. O. Speidel:Proc. 6th International Light Metals Congress, Leoben, Aluminium-Verlag, 1975, pp. 67–71.Google Scholar
- 22.M. S. Misra and K. J. Oswalt:Met. Eng. Quarterly, 1976, vol. 16, pp. 39–44.Google Scholar
- 23.R. J. Chester: Ph.D. Thesis, Monash University, Australia, 1983.Google Scholar
- 24.W. Gruhl and M. Schippers:Z. Metallk., 1967, vol. 58, pp. 679–84.Google Scholar
- 25.H. Cordier: Leichtmetall-Forschungsinstitut, Vereinigte Aluminium-Werke, 1986, private communications.Google Scholar
Copyright information
© The Metallurgical Society of AIME 1988