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.
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.
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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.
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Chen C Q. Macroscopic shear localization in high strength aluminium alloys .In:Starke E A ,ed.Proc ICAA .EMAS, 1986.989~998.
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Chen C Q.Anisotropic deformation hardening in textured aluminum alloys .In:Proc ICSMA7 .Oxford:Pergamon, 1985. 305~310.