HRTEM Analysis of Aging Electrolytic Low-Ti Al Alloy

Wen Yan Wang; Jing Pei Xie; Wei Li; Zhong Xia Liu

doi:10.4028/www.scientific.net/MSF.546-549.1015

Paper Titles

Metallographic Characterization of Porosity in A Cast Aluminum Alloy A356-T6
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Microstructures and Mechanical Properties of an Al-Cu-Li-Mg-Zr Alloy Containing Zn and Mn
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Effects of High Gradient Magnetic Fields on Solidified Structures of Non-Magnetic Metals with Different Susceptibilities
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Correction of Ghost in Reduced ODF with Particle Swarm Optimization Algorithm
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HRTEM Analysis of Aging Electrolytic Low-Ti Al Alloy
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Effect of Yb Additions on Microstructures and Properties of High Strength Al-Zn-Mg-Cu-Zr Alloys
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The Effects of Thermo-Mechanical Treatment on the Properties of 2519 Aluminum Alloy
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Characters of Coarse Grains Subdivisions in Rolled Polycrystalline Al
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Microstructural Evolvement of Al-1.5Si-1.1Mg-0.5Cu Alloy Ingot during Homogenization Treatment
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HomeMaterials Science ForumMaterials Science Forum Vols. 546-549HRTEM Analysis of Aging Electrolytic Low-Ti Al...

HRTEM Analysis of Aging Electrolytic Low-Ti Al Alloy

Abstract:

Electronic tensile testing, scanning electron microscope, transmission electron microscope, X-ray diffractometer and high resolution transmission microscope were employed to investigate the mechanical properties, microstructure, tensile fracture and morphology of the precipitated phases of an electrolytic low-titanium wrought 6009 aluminum alloy. Results showed that the mechanical properties of the electrolytic aluminum sheet were improved by solid solution treatment incorporating with pre-aging treatment. The tensile strength and extensibility were enhanced by a factor of 23% and 38% by pre-aging treatment at 150 °C for 5 minutes respectively; a large quantity of nucleation sites of β˝ phase were generated by pre-aging treatment, which was propitious to the transformation from solid solution state to GP zone, and the stable size of GP zone formed during the pre-aging process promoted the precipitation of Mg2Si phase. The Mg2Si phase was revealed by HRTEM and the crystalline stripes were obtained by Fourier transformation.