Volume 28 Issue 5
May  2002
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CHEN Chang-qi. Transgranular Shear Fraefure of High Strength Aluminum Alloys[J]. Journal of Beijing University of Aeronautics and Astronautics, 2002, 28(5): 519-523. (in Chinese)
Citation: CHEN Chang-qi. Transgranular Shear Fraefure of High Strength Aluminum Alloys[J]. Journal of Beijing University of Aeronautics and Astronautics, 2002, 28(5): 519-523. (in Chinese)

Transgranular Shear Fraefure of High Strength Aluminum Alloys

  • Received Date: 25 Jul 2002
  • Publish Date: 31 May 2002
  • In order to reveal the conditions for shear failure of high strength aluminum alloys, experimental tests and theoretical analysis were performed on various aluminum alloys and single crystals. It is concluded that plane strain deformation mode (external or internal) and very low strain hardening rate are two fundamental conditions for shear deformation localization to happen. Shear localization resulted in shear fracture. The author's previous proposed micro-mechanical model was revised.

     

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  • [1] Chen C Q. Fracture micromechanisms of aluminium alloys (keynote lecture). In:K.Hirano et al, eds. Proc Int Conf on Recent Advances in Sci and Eng of Light Metals, Science and Engineering of Light Metals. Japan:Japanese Institute of Light Metals,1991.185~192. [2]Chen C Q, Li H X. Macroscopic shear localization and fracture of notched and unnotched Al-Zn-Mg-Cu bars[J].Mat Sci and Tech, 1987,3:125~129. [3]Chen C Q. Micromechnisms of fracture and toughness of aluminium alloys (plenary lecture). In:Chen C Q, Starke E A, eds. Proc ICAA2, Aluminium Alloys '90. IAP, 1990.793~803. [4]Chen C Q, Knott J F. Effects of dispersoid particles on toughness of high-strength aluminium alloys[J]. Metal Science,1981,15:357~364. [5]Li H X, Chen C Q. Mechanism of anisotropy in fracture behaviour and fracture toughness of high strength aluminium alloy plate[J]. Mat Sci and Tech,1990,6:850~856. [6]Chen C Q. Macroscopic shear localization in high strength aluminium alloys. In:Starke E A, ed.Proc ICAA. EMAS, 1986.989~998. [7]hen C Q, Li H X. The nature of macroscopic shear banding. In:Proc ICAA3, 1992.221~225. [8]Hahn G T, Rosenfield A R.Metallurgical factors affecting fracture toughness of aluminum alloys[J]. Metall Trans,1975,6A:653~668. [9]Ashby M F.Work hardening of dispersion-hardened crystals[J]. Phil Mag, 1966,14:1157~1178. [10] Chen C Q.Anisotropic deformation hardening in textured aluminum alloys. In:Proc ICSMA7. Oxford:Pergamon, 1985. 305~310. [11]陈昌麒. 超高强度铝合金的发展[J].中国有色金属学报,2002,12(铝合金专辑):22~27.
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