NDLI: Effects of combined pre-straining and pre-aging on natural aging and bakehardening response of an Al-Mg-Si alloy

Content Provider	Springer Nature Link
Author	Xu, Huanhuan Wu, Sainan Liu, Yin Zhang, Zhiqing
Copyright Year	2013
Abstract	For a series of Al-0.34%Mg-1.05%Si-0.08%Cu alloys, the effects of pre-treatment on natural aging, bake hardening response and plasticity were investigated using Vickers hardness test and tensile test. Differential scanning calorimetry (DSC) analysis was conducted to reveal corresponding precipitation mechanisms. The results showed that pre-straining and pre-aging alone couldn’t completely suppress natural aging and improve bake hardening response simultaneously. The sensitivity of the pre-straining and pre-aging on the mechanical properties was evaluated. It was found that pre-aging was the main factor which greatly improved bake hardening response and pre-treatment had a weak influence on plasticity in pre-treated samples. DSC analysis showed that the dissolution trough of clusters disappeared in pre-treated samples, both β″ and β′ precipitation peak shifted to lower temperature and were reduced in pre-strained and pre-aged samples. It was concluded that the formation of Mg/Si clusters was replaced by the accelerated precipitation of β″ and β′ phases, which caused the suppression of natural aging and the improvement of bake hardening response (BHR).
Starting Page	340
Ending Page	344
Page Count	5
File Format	PDF
ISSN	10067191
Journal	Acta Metallurgica Sinica (English Letters)
Volume Number	26
Issue Number	3
e-ISSN	21941289
Language	English
Publisher	The Chinese Society for Metals
Publisher Date	2013-05-15
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spectroscopy/Spectrometry Tribology, Corrosion and Coatings Organometallic Chemistry Mechanical properties Natural aging Characterization and Evaluation of Materials Metallic Materials Pre-aging Pre-straining Nanotechnology Aluminum alloy Bake hardening response
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Metals and Alloys

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