Journal of Materials Science

, Volume 42, Issue 10, pp 3661–3669 | Cite as

Temperature and dwell time effect on hardness of Al-base alloys

  • F. Abd El-Salam
  • L. A. Wahab
  • R. H. NadaEmail author
  • H. Y. Zahran


The hardness of Al–5wt%Zn (alloy A) and Al–5wt%Zn–0.25wt%In (alloy B) was measured at room temperature for samples heat treated in the range 300–453 K and dwell times in the range 30–300 s under 50 gm load. Softening was observed for all the samples and the hardness decreased with increasing temperature and/or dwell time. Hardness drop was larger for alloy (B), which in general showed higher hardness than alloy (A). The stress exponent n increased with increasing temperature and showed high values falling in the power law breakdown region. The parameters deduced from the analysis of X-rays data and micrographs were found to be consistant with the calculated mechanical data.


Stress Exponent Dynamic Strain Aging Indentation Creep Guinier Preston Zone Impression Creep 


  1. 1.
    Haggag FM, Nanstad RK, Braki DN (1989) Amer Soc Mech Eng, Book No. H00485 pvp-vol.170:101Google Scholar
  2. 2.
    Sharma G, Ramanujan RV, Kutty TRG, Tiwari GP (2000) Mater Sci Eng A 278:106CrossRefGoogle Scholar
  3. 3.
    Chiang D, Li JCM, (1994) J Metal Res 9:903Google Scholar
  4. 4.
    Petty ER, O’neill H (1961) Metallurgia 63:25Google Scholar
  5. 5.
    Cal X, Yang X, Zhou P (1997) J Mater Sci Lett 16:741CrossRefGoogle Scholar
  6. 6.
    Ito K (1923) Sci Rep Tohoku Imp Univ. 112:137Google Scholar
  7. 7.
    Shishokin VP, Anorg Z (1930) Chem 189:263Google Scholar
  8. 8.
    BatlaCalleja FJ, Flores A, Ania F, Bassett DC (2000) J Mater Sci 35:1315CrossRefGoogle Scholar
  9. 9.
    BatlaCalleja FJ (1985) Trends Polym Sci 66:117CrossRefGoogle Scholar
  10. 10.
    Kramer BM, Judd PK (1985) J Vac Sci Tech A3 6:2439CrossRefGoogle Scholar
  11. 11.
    Kutty TRG, Jarvis T, Ganguly C (1997) J Nucl Mater 246:189CrossRefGoogle Scholar
  12. 12.
    Westbrook JH (1953) Trans Am Soc Met 45:221Google Scholar
  13. 13.
    Geach GA (1974) Int Met Rev 19:255CrossRefGoogle Scholar
  14. 14.
    Rodriguez P (1991) In: Proc on Zirconium alloys for reactor components (ZARC-91), Department of Atomic Energy, Bombay, p 46Google Scholar
  15. 15.
    Sundar RS, Kutty TRG, Sastry DH (2000) Intermetallics 8:427CrossRefGoogle Scholar
  16. 16.
    Li WB, Warren R (1993) Acta Metall Mater 41:3065CrossRefGoogle Scholar
  17. 17.
    Chu SNG, Li JCM (1977) J Mater Sci 12:2200CrossRefGoogle Scholar
  18. 18.
    Kutty TRG, Ganguly CG, Sastry DH (1996) Scripta Metall Mater 34(12):1833CrossRefGoogle Scholar
  19. 19.
    Mckamey CG, Devan JH, Tortorelli PF, Sikka VK (1991) J Mater Res 6:1779CrossRefGoogle Scholar
  20. 20.
    Sikka VK (1991) Ductility enhancement of iron aluminide alloy, SAMPE Q 7:2Google Scholar
  21. 21.
    Hansen M, Anderko K (1958) Constitution of binary alloys. MC Grow-Hill, New York, p 149CrossRefGoogle Scholar
  22. 22.
    Mostafa MM, Nada RH, Abd El-salam F (1994) Phys Stat Sol A 143:297CrossRefGoogle Scholar
  23. 23.
    Abd El-Salam F, Ibraheim AM, Ammar AH, Morsy AY (1995) Vacuum 46(11):1299CrossRefGoogle Scholar
  24. 24.
    Semenchenko VK (1961) Surface phenomena in metals and alloys. Pergamon, LondonGoogle Scholar
  25. 25.
    Atkins AG, Tabor D (1966) Proc R Soc London Ser A 292:441CrossRefGoogle Scholar
  26. 26.
    Stone DS, Yoder KB (1994) J Mater Res 9:2524CrossRefGoogle Scholar
  27. 27.
    Krishnamurthy S, Gupta SP (1977) Mater Sci Eng 3:155CrossRefGoogle Scholar
  28. 28.
    Westbrook JH (1956) J Electrochem Soc103:54CrossRefGoogle Scholar
  29. 29.
    Sargent PM, Ashby MF (1992) Mater Sci Tech 8:594CrossRefGoogle Scholar
  30. 30.
    Linga Murty K, Ravi J, Wiratmo (1995) Nuc Eng Des 156:359CrossRefGoogle Scholar
  31. 31.
    Atkin G (1971) In: Westbrook JH, Conrad H (eds) The science of hardness testing and its research applications. A.S.M, Metals park (OH), p 223Google Scholar
  32. 32.
    Garofalo F, (1965) Fundamentals of creep and creep rupture in metals. New York and London, p 29Google Scholar
  33. 33.
    Warren BE (1959) Rep Prog Metals 8:47Google Scholar
  34. 34.
    Fawzy A, Mostafa MT, Abd El-Salam F (2001) Egypt J Sol 24(1):79Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • F. Abd El-Salam
    • 1
  • L. A. Wahab
    • 2
  • R. H. Nada
    • 1
    Email author
  • H. Y. Zahran
    • 1
  1. 1.Physics Department, Faculty of EducationAin Shams UniversityCairoEgypt
  2. 2.National Centre for Radiation Research and TechnologyNasr-City, CairoEgypt

Personalised recommendations