High temperature compression testing and determination of warm working temperature for commercial purity aluminium

High temperature compression testing and determination of warm working temperature for commercial purity aluminium

CP aluminium was subjected to axysymmetric compression testing at 303, 373, 473, 573 and 673 K. Strength coefficient and strain hardening exponent were determined from log-log plot of true stress and true strain at different temperatures. True stress vs temperature at different strains indicated tha...

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Veröffentlicht in:Bulletin of materials science 1999-02, Vol.22 (1), p.17-20
Hauptverfasser: Rao, B K, Khadar, M S A, Srinivasan, K
Format: Artikel
Sprache:eng
Schlagworte:
Aluminium
Aluminum
Compression tests
Compressive strength
Dynamic strain aging
High temperature
Materials science
Precipitation hardening
Strain hardening
True strain
True stress
Warm working
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Zusammenfassung:CP aluminium was subjected to axysymmetric compression testing at 303, 373, 473, 573 and 673 K. Strength coefficient and strain hardening exponent were determined from log-log plot of true stress and true strain at different temperatures. True stress vs temperature at different strains indicated that dynamic strain ageing (DSA) occurred between 473 and 673 K. Warm working is to be done between 423 K and 473 K, so that optimum substructure hardening and strain hardening can be achieved during mechanical processing.
ISSN:0250-4707
0973-7669
DOI:10.1007/BF02745670