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Surface Oxides in P/M Aluminum Alloys

  • Physical Metallurgy and Material
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Abstract

Aluminum powder particles inherently exhibit a surface oxide layer because of the reactivity of aluminum with oxygen. This surface layer detrimentally affects mechanical properties when incompletely broken up or nonuniformly distributed during consolidation and hot working. The breakup of surface oxides depends on the degree of dehydration and constitutional changes occurring during degassing. When dehydrated completely, the surface oxide film is completely broken up during subsequent hot consolidation, particularly, if it contains fine crystalline oxides. Subsequent redistribution of the oxide is a direct function of processing parameters—deformation amounts and mode. This paper discusses the effect of the surface oxides on the mechanical properties and microstructure of both advanced high strength/corrosion resistant and elevated temperature aluminum powder metallurgy alloys.

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References

  1. W.S. Cebulak, “Program to Develop High Strength Aluminum Powder Metallurgy Products,” U.S. Army Frankford Arsenal, Quarterly Report, Contract DAAA2 5-72-C0593, May-June 1973.

    Google Scholar 

  2. W.L. Otto, Jr., “Metallurgical Factors Controlling Structure in High Strength Aluminum Products,” Air Force Materials Laboratory, Technical Report, AFML-TR-76-60, May 1976.

    Google Scholar 

  3. R.E. Sanders, Jr., W.L. Otto, Jr., and R.J. Bucci, “Fatigue Resistant Aluminum P/M Alloy Development,” Air Force Materials Laboratory, Technical Report, AFML-TR-79-4131, September 1979.

    Google Scholar 

  4. F.H. Froes and J.R. Pickens, “Powder Metallurgy of Light Metals Alloys for Demanding Applications,” J. Metals, 36 (1) (1984), pp. 14–28.

    Google Scholar 

  5. R.R. Sawtell, W.L. Otto, Jr., and D.L. Lege, “Elevated Temperature Alloy Development,” Semi-Annual Report, AFML Contract No. F33615-77-C-5086, March 28, 1978.

    Google Scholar 

  6. R.E. Sanders, Jr. and G.J. Hildeman, “Elevated Temperature Aluminum Alloy Development,” Final Report, AFWAL-TR-81-4076, September 1981.

    Google Scholar 

  7. S.L. Langenbeck et al., “Elevated Temperature Aluminum Alloy Development,” U.S. Air Force Contract No. F33615-81-C-5096, October 1981.

    Google Scholar 

  8. S.L. Langenbeck et al., “Elevated Temperature Alu-minum Alloy Development,” U.S. Air Force Contract No. F33615-81-C-5096, March 1984.

    Google Scholar 

  9. CM. Adam, R.G. Bordeau, J.W. Broch, and A.R. Cox, “Application of Rapidly Solidified Alloys,” U.S. Air Force Report on Contract No. F33615-76-C-5136, May 1980.

    Google Scholar 

  10. H. Jones, Rapid Solidification of Metals and Alloys, The Institute of Metals, Monograph No. 8, 1982.

  11. F.H. Froes and D. Eylon, “Powder Metallurgy of Titanium Alloys — A Review,” presented at the Fifth International Conference on Titanium, Munich, West Germany, September 1984 and to be published in the Proceedings.

    Google Scholar 

  12. G. Staniek, “Observation of Oxide Skin in Powder Metallurgy Aluminum Alloys,” Air Force Wright Aeronautical Laboratories, Technical Report, AFWAL-TR-83-4157, March 1984.

    Google Scholar 

  13. H.G. Paris and A. Hafez, “Cobalt-free High Strength Aluminum P/M Alloys,” Air Force Wright Aeronautical Laboratories, Technical Report, AFWAL-TR-83-4002, February, 1983.

    Google Scholar 

  14. S. Kang and N.J. Grant, Second International Conference on Al-Li Alloys, Monterey, CA, April 12–14, 1983 (in print).

    Google Scholar 

  15. S. Hirose and M.E. Fine, Proceedings of AIME Symposium on High Strength Powder Metallurgy Aluminum Alloys, Dallas, TX, February 17–18, 1982, pp. 19–39.

    Google Scholar 

  16. V.W.C. Kuo and E.A. Starke, Jr., Proceedings of AIME Symposium on High Strength Powder Metallurgy Aluminum Alloys, Dallas, TX, February 17–18, 1982, pp. 44–62.

    Google Scholar 

  17. S. Hirose and M.E. Fine, Met. Trans., 14A (1983), pp. 1189–1197.

    Google Scholar 

  18. M.M. Cook and Y-W. Kim, Microstructural Science, 10 (1982), pp. 33–41.

    Google Scholar 

  19. L.S. Darken and R.W. Gurry, Physical Chemistry of Metals, McGraw-Hill Publications (1953).

    Google Scholar 

  20. J.W. Bohlen, S.G. Roberts, and G.R. Chanani, “Investigation of Improved Methods for Consolidating Rapidly Solidified Aluminum Alloys Powder,” Technical Report, Northrop Corporation, NOR82-4, June 1982.

    Google Scholar 

  21. F.R. Billman, J.C. Kuli, Jr., G.J. Hildeman, J.I. Petit, and J.A. Walker, Proceedings of the Third Conference on Rapid Solidification, National Bureau of Standards, Gaithersburg, MD, December 6–8, 1982, pp. 532–546.

    Google Scholar 

  22. Y-W. Kim, unpublished research, Metcut-Materials Research Group (1984).

  23. Y-W. Kim, W.M. Griffith, and F.H. Froes, “The Break-up and Distribution of Surface Oxides through Processing of P/M Aluminum Alloy 7091,” ASM Metals/Materials Technology Series No. 8305-048, ASM Metals Congress, Philadelphia, PA, October 3–6, 1983.

    Google Scholar 

  24. W.M. Griffith, Y-W. Kim, and F.H. Froes, “P/M Processing of Aluminum Alloy 7091,” Proceedings of the ASTM Symposium on Rapidly Solidified Powder of Aluminum Alloys, ASTM, Philadelphia, PA, April 4–5, 1984 (in print).

    Google Scholar 

  25. Y-W. Kim, “Surface Oxides of P/M Aluminum Alloy 7091: Their Distribution and Effects on Properties,” submitted to Metallurgical Transactions for publication (1985).

    Google Scholar 

  26. Y-W. Kim and W.M. Griffith, “Annealing Behavior and Tensile Properties of Elevated Temperature P/M Aluminum Alloys,” Proceedings of the ASTM Symposium on Rapidly Solidified Powder of Aluminum Alloys, ASTM, Philadelphia, PA, April 4–5, 1984 (in print).

    Google Scholar 

  27. N.J. Grant, “Rapid Solidification of Metallic Particulate,” J. Metals, 35 (1) (1983), pp. 20–27.

    Google Scholar 

  28. S.J. Savage and F.H. Froes, “Production of Rapidly Solidified Metals and Alloys,” J. Metals, 36, (4) (1984), pp. 20–33.

    Google Scholar 

  29. A.I. Litvintsev and L.A. Arbuzova, Sov. P/M and Met. Cer., 1 (1967), pp. 1–10.

    Article  Google Scholar 

  30. R.C. Svedberg, unpublished research, Westinghouse Electric Corporation, Pittsburgh, PA (1981).

  31. J.M. Walker, unpublished research, Alcoa Laboratories, Alcoa, PA (1982).

  32. J.T. Morgan, H.L. Gegel, S.M. Doraivelu, and L.E. Matson, Proceedings of AIME Symposium on High Strength Powder Metallurgy Aluminum Alloys, Dallas, TX, February 17–18, 1982, pp. 193–206.

    Google Scholar 

  33. S.W. Schwenker, Y-W. Kim, and F.H. Froes, “The Influence of Oxide Distribution on the Mechanical Properties of P/M 7091,” presented at the 1984 TMS-AIME Annual Meeting, Los Angeles, CA, February 26–March 1, 1984.

    Google Scholar 

  34. F.R. Billman, J.I. Petit, R.E. Sanders, Jr., and H.G. Paris, “Microstructure/Processing Control for Alu-minum P/M Wrought Products,” Technical Report, U.S. Army Armament Research and Development Command, ARSCD-CR-83001, June 1983.

    Google Scholar 

  35. Y-W. Kim and L.R. Bidwell, “Effects of Microstructure and Aging Treatment of the Fatigue Crack Growth Behavior of High Strength P/M Aluminum Alloy X7091,” Proceedings of AIME Symposium on High Strength Powder Metallurgy Aluminum Alloys, Dallas, TX, February 17–18, 1982, pp. 107–124.

    Google Scholar 

  36. Y-W. Kim and W.M. Griffith, “The Effect of Grain Size on Strength and Fatigue Crack Growth Behavior in P/M Aluminum Alloy 7091,” Proceedings of the P/M Aerospace Materials Conference, Berne, Switzerland, November 12–14, 1984, in Metal Powder Report, Vol. 1, MPR Publishing Services, Ltd., Shrewsbury, England, pp. 33.1–33.16.

    Google Scholar 

  37. Y-W. Kim, M.M. Cook and W.M. Griffith, “Thermal Stability of High Temperature P/M Aluminum Alloys,” Proceedings of the Third Conference on Rapid Solidification Proceedings: Principles and Technologies, III, Gaithersburg, MD, December 6–8, 1982, pp. 609–614.

    Google Scholar 

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Authors
  1. Young-Won Kim
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  2. W. M. Griffith
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  3. F. H. Froes
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Additional information

Young-Won Kim received his Ph.D. in metallurgy from the University of Connecticut. He is currently Principal Investigator in Aluminum Research at Metcut-Materials Research Group, Wright-Patterson Air Force Base in Ohio.

Walter M. Grifflth received his Ph.D. in metallurgy from the University of Cincinnati in 1984. He is currently a Metallurgist at the Air Force Wright Aeronautical Laboratories, Structural Metals Branch (AFWAL/MLLS), Wright Air Force Base in Ohio.

F.H. Froes received his M.S. and Ph.H. in physical metallurgy from the University of Sheffield. He is currently Technical Area Manager and focal point for metallic structural materials at the Air Force Wright Aeronautical Laboratories, Materials Laboratory, AFWAL/MLLS at Wright Patterson Aire Force Base in Ohio. He is an adjunct professor at the University of Dayton and Wright State University and teaches courses on titanium and rapid solidification for the ASM. Dr. Froes is also a member of TMS.

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Kim, YW., Griffith, W.M. & Froes, F.H. Surface Oxides in P/M Aluminum Alloys. JOM 37, 27–33 (1985). https://doi.org/10.1007/BF03257675

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