NDLI: Effects of pre-deformation on microstructure and properties of Al–Cu–Mg

Content Provider	Springer Nature Link
Author	Liu, Xiao yan Wang, Zhao peng Li, Qing shuai Zhang, Xi liang Cui, Hao xuan Zhang, Xiao liang
Copyright Year	2017
Abstract	The effects of the pre-deformation on the microstructure, mechanical properties and corrosion resistance of Al–Cu–Mg–Ag alloys were investigated by means of hardness tests, tensile tests, intergranullar corrosion (IGC) tests and transmission electron microscopy (TEM), respectively. The results show that with the increase of deformation amount, the aging hardening rate increases while the strength of the alloy decreases and then increases. The sample with a pre-deformation of 6% possesses the highest tensile strength due to the refinedly and homogeneously distributed precipitations. The pre-deformation aging accelerates the heterogeneous nucleation of Ω and θ′ phases at dislocations, and also refines the precipitations both in the grains and along the grain boundaries. The precipitation of Ω phase is restrained while that of θ′ phase is accelerated in pre-deformed Al–Cu–Mg–Ag alloy compared with the sample without pre-deformation. In addition, the width of the precipitate free zone decreases with increasing the pre-deformation amount, leading to a narrower IGC passageway. This results in an enhanced IGC resistance of Al–Cu–Mg–Ag alloy treated by pre-deformation aging.
Starting Page	1027
Ending Page	1033
Page Count	7
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	24
Issue Number	5
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2017-06-09
Publisher Place	Changsha
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Al–Cu–Mg–Ag alloy pre-deformation dislocation intergranullar corrosion Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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