Dynamic deformation and failure behaviour of Al-Sc alloy under shear loading

Woei-Shyan Lee, C. F. Lin, Yu-Cheng Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The dynamic shear deformation behaviour and fracture characteristics of Al-Sc alloy are studied using a split-Hopkinson torsional bar at shear strain rates of 800 s-1, 1800 s-1 and 2800 s-1 and temperatures of -150°C, 25°C and 300°C. The experimental results indicate that the shear strain, shear strain rate and temperature all have a significant influence on the mechanical properties of the alloy. The fracture surfaces of the gauge length section of the deformed specimen are twisted into band-like features as a result of intensive localized shear deformation. The width and microhardness of the shear band changes with strain rate and temperature as a result of different work hardening effects. Specimen fracture initiates at the Al3Sc precipitate/matrix interface. The presence of precipitates accelerates the dynamic shear fracture formation via microcracking.

Original languageEnglish
Title of host publicationProceedings - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading, EURODYMAT 2006
Pages965-970
Number of pages6
DOIs
Publication statusPublished - 2006 Aug 1
Event8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading - Dijon, France
Duration: 2006 Sep 112006 Sep 15

Publication series

NameJournal De Physique. IV : JP
Volume134
ISSN (Print)1155-4339
ISSN (Electronic)1764-7177

Other

Other8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading
CountryFrance
CityDijon
Period06-09-1106-09-15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • Cite this

    Lee, W-S., Lin, C. F., & Lin, Y-C. (2006). Dynamic deformation and failure behaviour of Al-Sc alloy under shear loading. In Proceedings - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading, EURODYMAT 2006 (pp. 965-970). (Journal De Physique. IV : JP; Vol. 134). https://doi.org/10.1051/jp4:2006134147