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	Effect of heat treatment on microstructure, hardening and plasticity of a commercial Al–Zn–Mg–Cu alloy
	Chemingui, Mahmoud1; Benkhenafou, Fethi2; Khitouni, Mohamed1; Jozwiak, Karol3; Mesmacque, Gérard4; Shi, MingQuan5; Douadji, Lyes5
	2018
摘要	The effect of the heat treatment on the microsturucture and the mechanical response of a commercial Al–Zn–Mg–Cu alloy (AA7075) was studied. The influence of annealing on the hardening and plastic properties of Al–Zn-Mg–Cu alloy was investigated by indentation and tensile tests. The microstructural evolution of the alloy was examined by meant of optical, scanning and transmission electron microscopies. After various ageing states, the Al–Zn–Mg–Cu alloy showed significant changes in microstructure and mechanical behaviour. After quenching, the microstructure was characterized by high ductility. Following ageing at 140 8C, corresponding to the maximum hardness value, the alloy reveals a high volume fraction of small g’ precipitates. The minimum hardening is recorded after ageing at 350 8C. The radical change in the microstructure of the alloy influences its mechanical behaviour, especially in hardening and plasticity. © Carl Hanser Verlag GmbH & Co. KG
DOI	10.3139/146.111709
发表期刊	International Journal of Materials Research
ISSN	18625282
卷号	109期号:12页码:1113-1121
收录类别	EI
语种	英语