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Predicting the J integral fracture toughness of Al 6061 using the small punch test

Journal Article


Abstract


  • The 6000 series aluminium alloys (Al-Mg-Si systems) are commonly used as medium-strength structural materials; in particular, the 6061 (Al-1Mg-0.6Si) alloy is widely utilized as a general-purpose structural material due to its excellent formability and corrosion-resisting capabilities. The objective of this study was to obtain a correlation between the small punch (SP) test estimated equivalent fracture strain (εqf) and fracture toughness (F1C) property for 6061 aluminium, and determine its viability as a non-destructive fracture toughness test technique for remaining life assessment of in-service components. Samples of 6061-T6 aluminium were cut from bulk plate, in both the longitudinal and transverse directions, for the as-received condition as well as subjected to three different over-ageing heat-treatment schedules. A strong linear correlation between valid F1C and SP estimated biaxial fracture strain εqf is presented for aluminium 6061 at room temperature. © 2007 Australian Nuclear Science and Technology organisation Journal compilation © 2007 Blackwell Publishing Ltd.

Publication Date


  • 2007

Citation


  • Budzakoska, E., Carr, D. G., Stathers, P. A., Li, H., Harrison, R. P., Hellier, A. K., & Yeung, W. Y. (2007). Predicting the J integral fracture toughness of Al 6061 using the small punch test. Fatigue and Fracture of Engineering Materials and Structures, 30(9), 796-807. doi:10.1111/j.1460-2695.2007.01153.x

Scopus Eid


  • 2-s2.0-34548160962

Start Page


  • 796

End Page


  • 807

Volume


  • 30

Issue


  • 9

Abstract


  • The 6000 series aluminium alloys (Al-Mg-Si systems) are commonly used as medium-strength structural materials; in particular, the 6061 (Al-1Mg-0.6Si) alloy is widely utilized as a general-purpose structural material due to its excellent formability and corrosion-resisting capabilities. The objective of this study was to obtain a correlation between the small punch (SP) test estimated equivalent fracture strain (εqf) and fracture toughness (F1C) property for 6061 aluminium, and determine its viability as a non-destructive fracture toughness test technique for remaining life assessment of in-service components. Samples of 6061-T6 aluminium were cut from bulk plate, in both the longitudinal and transverse directions, for the as-received condition as well as subjected to three different over-ageing heat-treatment schedules. A strong linear correlation between valid F1C and SP estimated biaxial fracture strain εqf is presented for aluminium 6061 at room temperature. © 2007 Australian Nuclear Science and Technology organisation Journal compilation © 2007 Blackwell Publishing Ltd.

Publication Date


  • 2007

Citation


  • Budzakoska, E., Carr, D. G., Stathers, P. A., Li, H., Harrison, R. P., Hellier, A. K., & Yeung, W. Y. (2007). Predicting the J integral fracture toughness of Al 6061 using the small punch test. Fatigue and Fracture of Engineering Materials and Structures, 30(9), 796-807. doi:10.1111/j.1460-2695.2007.01153.x

Scopus Eid


  • 2-s2.0-34548160962

Start Page


  • 796

End Page


  • 807

Volume


  • 30

Issue


  • 9