<abstract xmlns="http://www.w3.org/1999/xhtml"> The micromechanisms of fracture of AZ61 + 1 wt. % Al2O3 composite in the zone of superplastic deformation was analysed and quantified in this work. The specimens were tested at temperature of 200°C at different strain rates. Changing the strain rate, from 1x10-2 s-1 to 1x10-4 s-1, a significant growth of ductility was observed. At maximum value of superplasticity the fracture was transcrystalline ductile with dimples of two size categories. Based on the statistical analysis of fracture micromechanisms at the elevated temperature and strain rates of 10-0- 1x10-4 s-1 hyperbolic dependency was depicted according to Gurland - Plateau theory.</abstract>

The micromechanisms of fracture of AZ61 + 1 wt. % Al2O3 composite in the zone of superplastic deformation was analysed and quantified in this work. The specimens were tested at temperature of 200°C at different strain rates. Changing the strain rate, from 1x10-2 s-1 to 1x10-4 s-1, a significant growth of ductility was observed. At maximum value of superplasticity the fracture was transcrystalline ductile with dimples of two size categories. Based on the statistical analysis of fracture micromechanisms at the elevated temperature and strain rates of 10-0- 1x10-4 s-1 hyperbolic dependency was depicted according to Gurland - Plateau theory.

Micromechanisms of Fracture of Magnesium Based Composite After Superplastic Deformation

Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice,

Institute of Materials, Faculty of Metallurgy, Technical University in Košice, Park Komenského 11, 042 00 Košice,

National Taiwan University of Science and Technology, Department of Mechanical Engineering, 43, Sec.4, Keelung Rd., Taipei, 106,

Powder Metallurgy Progress

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The micromechanisms of fracture of AZ61 + 1 wt. % Al2O3 composite in the zone of superplastic deformation was analysed and quantified in this work. The...

Micromechanisms of Fracture of Magnesium Based Composite After Superplastic Deformation

Publié en ligne: 20 janv. 2017

Pages: 117 - 122

DOI: https://doi.org/10.1515/pmp-2016-0010

Mots clés
Mg Alloy AZ61, fracture analysis, superplastic behaviour

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Micromechanisms of Fracture of Magnesium Based Composite After Superplastic Deformation

Publié en ligne: 20 janv. 2017

Pages: 117 - 122

DOI: https://doi.org/10.1515/pmp-2016-0010

Mots clésMg Alloy AZ61, fracture analysis, superplastic behaviour

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
Mg Alloy AZ61, fracture analysis, superplastic behaviour