Effects of ultrasonic vibration on plastic deformation of AZ31 during the tensile process

An investigation on the plastic behavior of AZ31 magnesium alloy under ultrasonic vibration（with a frequency of 15 kHz and a maximum output of 2 kW） during the process of tension at room temperature was conducted to reveal the volume effect of the vibrated plastic deformation of AZ31.The characteris...

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Bibliographic Details
Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2011-02, Vol.18 (1), p.70-76
Main Authors: Wen, Tong, Wei, Li, Chen, Xia, Pei, Chun-lei
Format: Article
Language:English
Subjects:
Amplitudes
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Corrosion and Coatings
Deformation
Deformation effects
Deformation resistance
Flow resistance
Formability
Glass
Hardening
Magnesium
Magnesium base alloys
Materials Science
Mechanical properties
Metallic Materials
Natural Materials
Plastic deformation
Plastic properties
Plasticity
Room temperature
Softening
Surfaces and Interfaces
Thin Films
Tribology
Ultrasonic vibration
Vibration
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Summary:An investigation on the plastic behavior of AZ31 magnesium alloy under ultrasonic vibration（with a frequency of 15 kHz and a maximum output of 2 kW） during the process of tension at room temperature was conducted to reveal the volume effect of the vibrated plastic deformation of AZ31.The characteristics of mechanical properties and microstructures of AZ31 under routine and vibrated tensile processes with different amplitudes were compared.It is found that ultrasonic vibration has a remarkable influence on the plastic behavior of AZ31 which can be summarized into two opposite aspects：the softening effect which reduces the flow resistance and improves the plasticity,and the hardening effect which decreases the formability.When a lower amplitude or vibration energy is applied to the tensile sample,the softening effect dominates,leading to a decrease of AZ31 deformation resistance with an increase of formability.Under the application of a high-vibrating amplitude,the hardening effect dominates,resulting in the decline of plasticity and brittle fracture of the samples.
ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-011-0402-4