Comparison of crack growth behaviour between spray-formed and commercial plate Al-Zn-Mg-Cu alloy 7150

Gingell, A.D.B. and King, J.E. (1996). Comparison of crack growth behaviour between spray-formed and commercial plate Al-Zn-Mg-Cu alloy 7150. IN: Aluminium alloys - ICAA5. Driver, J.H.; Dubost, B.; Durand, F.; Fougeres, R.; Guyot, P.; Sainfort, P. and Suery, M. (eds) Materials science forum, Part 3 . Pfaffikon (CH): Trans Tech Publications.

Abstract

This paper compares the crack growth resistance of an experimental spray-formed extrusion with that of a commercial aluminium alloy, the two alloys having similar compositions but markedly different grain structures. Tensile and fracture behaviour is similar in both materials and is influenced by inclusion content. The two materials differ in their crack growth resistance, which is shown to be dependent upon grain size and shape. Environmentally-induced crack growth is favoured by aligned grain boundaries and small grain size.

Divisions: Aston University (General)
Event Title: 5th International Conference on Aluminium Alloys, their Physical and Mechanical Properties (ICAA5)
Event Type: Other
Event Dates: 1996-07-19
Uncontrolled Keywords: Al-Zn-Mg-Cu alloy,closure,corrosion fatigue,embrittlement,frequency,grain size,hydrogen,intergranular cracking,spray-formed,composition,corrosion resistance,crack propagation,crystal microstructure,fatigue of materials,frequencies,grain boundaries,grain size and shape,hydrogen embrittlement,mechanical properties,metal extrusion,metal forming,commercial alloy,spray formed alloy,aluminum alloys,Materials Science(all)
Published Date: 1996-12-01

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