Evaluation of Superplastic Formability of the AZ31 Magnesium Alloy
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Lung-Chuan Tsao
Abstract
The superplastic formability of the AZ31 magnesium alloy is evaluated in the temperature range between 300 and 525 °C under biaxial tensile stress through argon-blowing testing. During superplastic forming, the cellular precipitates originally existing in the as-received AZ31 alloy dissolve into solid solution. Superplastic deformation is found to play a part in the dissolution of these cellular precipitates. In the highly deformed specimens, two types of cavities are observed. After superplastic forming, the microhardness of this AZ31 alloy decreases distinctively. However, the corrosion behavior is improved in the case of deformed specimens when the number of cavities has not reached to a significant level. Both the decrease of microhardness and the increase of corrosion resistance can be attributed to the dissolution of cellular precipitates after superplastic forming.
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© 2001 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Editorial
- In memoriam
- The Ringberg Workshop 1999 on Thermodynamic Modelling and Applications
- Aufsätze/Articles
- Using Ab Initio Calculations in the Calphad Environment
- Contributions to the Thermodynamic Modelling of Solutions
- Thermodynamic Modelling of Oxide and Oxynitride Phases
- The Modelling of Carbide, Nitride and Carbo-Nitride Phases
- Amorphous Phases in Materials Microstructure
- Experimental and Theoretical Study of the Al-Rich Corner in the Ternary Al–Ti–B System and Reassessment of the Al-Rich Side of the Binary Al–B Phase Diagram
- Evaluation of Superplastic Formability of the AZ31 Magnesium Alloy
- Characteristics of Mechanical Alloying of Zn–Al-Based Alloys
- The Effect of Sputter Cleaning and TiN Coating after Sputter Cleaning on Tensile and Fatigue Behavior of a Nodular Cast Iron
- Nucleation of Iron Nitrides during Gaseous Nitriding of Iron; Effect of a Preoxidation Treatment
- Structure Formation of Activated Nickel Catalyst During Caustic Leaching of a Nickel–Aluminium Alloy
- Experimental Study on the Electrical Conductivity and Thermo-Electromotive Force of Liquid Pb–Mg-Based Alloys
- Interfacial Reactions between the Aluminium Alloy Matrix and Intermetallic Reinforcement Particles in Novel P/M 5056/Ni3Alp Composites
- Microstructure and Devitrification Behavior of Melt-Spun Al-Rich Metallic Glasses and Nanostructured Composites
- Mitteilungen/Notifications
- Personelles/Personal
- Bücher/Books
- Tagungen/Conferences
Articles in the same Issue
- Frontmatter
- Editorial
- In memoriam
- The Ringberg Workshop 1999 on Thermodynamic Modelling and Applications
- Aufsätze/Articles
- Using Ab Initio Calculations in the Calphad Environment
- Contributions to the Thermodynamic Modelling of Solutions
- Thermodynamic Modelling of Oxide and Oxynitride Phases
- The Modelling of Carbide, Nitride and Carbo-Nitride Phases
- Amorphous Phases in Materials Microstructure
- Experimental and Theoretical Study of the Al-Rich Corner in the Ternary Al–Ti–B System and Reassessment of the Al-Rich Side of the Binary Al–B Phase Diagram
- Evaluation of Superplastic Formability of the AZ31 Magnesium Alloy
- Characteristics of Mechanical Alloying of Zn–Al-Based Alloys
- The Effect of Sputter Cleaning and TiN Coating after Sputter Cleaning on Tensile and Fatigue Behavior of a Nodular Cast Iron
- Nucleation of Iron Nitrides during Gaseous Nitriding of Iron; Effect of a Preoxidation Treatment
- Structure Formation of Activated Nickel Catalyst During Caustic Leaching of a Nickel–Aluminium Alloy
- Experimental Study on the Electrical Conductivity and Thermo-Electromotive Force of Liquid Pb–Mg-Based Alloys
- Interfacial Reactions between the Aluminium Alloy Matrix and Intermetallic Reinforcement Particles in Novel P/M 5056/Ni3Alp Composites
- Microstructure and Devitrification Behavior of Melt-Spun Al-Rich Metallic Glasses and Nanostructured Composites
- Mitteilungen/Notifications
- Personelles/Personal
- Bücher/Books
- Tagungen/Conferences
