The impact behavior of aluminum alloy 6061: Effects of notch severity View Full Text


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Article Info

DATE

1999-06

AUTHORS

T. S. Srivatsan, J. Champlin, P. C. Lam, M. Manoharan

ABSTRACT

In this paper the influence of notch acuity and test temperature on the impact behavior of aluminum alloy 6061 is presented and discussed. Notch angles of 45°, 60°, 75° and 90° were chosen for a standard charpy impact test specimen containing two such notches positioned at right angles to the applied load. For a given angle of the notch the dynamic fracture toughness increased with an increase in test temperature. At a given test temperature, the impact toughness of a ductile microstructure decreased with an increase in notch severity. For the least severe notch dynamic fracture surfaces revealed the occurrence of localized mixed-mode deformation at the elevated temperature. An increase in notch severity resulted in essentially Mode-I dominated fracture at all test temperatures. The results are discussed in light of alloy microstructure, fracture mechanisms and deformation field ahead of the advancing crack tip. More... »

PAGES

2793-2800

References to SciGraph publications

  • 1983-06. Estimation of transverse-shear fracture toughness for an hsla steel in INTERNATIONAL JOURNAL OF FRACTURE
  • 1996-01. Combined mode I-mode II fracture toughness of high density polyethylene in JOURNAL OF MATERIALS SCIENCE LETTERS
  • 1984-05. Experimental study of fracture under combined modes KI – KIII in INTERNATIONAL JOURNAL OF FRACTURE
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    http://scigraph.springernature.com/pub.10.1023/a:1004614814112

    DOI

    http://dx.doi.org/10.1023/a:1004614814112

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