Effect of Prestraining and Preaging on Properties of Al-Mg-Si Alloys Before and After Plane Baking

Journal Article · Mon Jul 15 04:00:00 EDT 2019 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-019-04169-X· OSTI ID:22970659

Ren, Xianwei; Huang, Yuanchun ^[1]; Li, Ying ^[2]

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1. Central South University, Light Alloy Research Institute (China)
2. Central South University, School of Materials Science and Engineering (China)

The effects of different prestraining and preaging on the mechanical properties of automobile plane Al-1.02%Mg-0.93%Si alloys after 2 weeks of natural aging and plane baking treatment were investigated by Vickers hardness and tensile tests. The results showed that prestraining subsequent preaging simultaneously inhibited natural aging and enhanced the plane baking treatment. Differential scanning calorimetry and transmission electron microscopy analyses revealed the effectiveness of dislocation introduced by prestraining. The interaction between dislocation, quenched-in vacancies, solute atoms and precipitates was discussed, and the influence of these mechanisms on strength and formability was investigated.

• OSTI ID: 22970659
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 7 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
BAKING
MECHANICAL PROPERTIES
SILICON ALLOYS
TRANSMISSION ELECTRON MICROSCOPY
VICKERS HARDNESS