Effect of high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg

Authors: Ahmadkhaniha, D., Huang, Y., Jaskari, M., Järvenpää, A., Sohi, M.H., Zanella, C., Karjalainen, L.P. and Langdon, T.G.

Journal: Journal of Materials Science

Volume: 53

Issue: 24

Pages: 16585-16597

eISSN: 1573-4803

ISSN: 0022-2461

DOI: 10.1007/s10853-018-2779-1

Abstract:

High-pressure torsion (HPT) processing was applied to cast pure magnesium, and the effects of the deformation on the microstructure, hardness, tensile properties and corrosion resistance were evaluated. The microstructures of the processed samples were examined by electron backscatter diffraction, and the mechanical properties were determined by Vickers hardness and tensile testing. The corrosion resistance was studied using electrochemical impedance spectroscopy in a 3.5% NaCl solution. The results show that HPT processing effectively refines the grain size of Mg from millimeters in the cast structure to a few micrometers after processing and also creates a basal texture on the surface. It was found that one or five turns of HPT produced no significant difference in the grain size of the processed Mg and the hardness was a maximum after one turn due to recovery in some grains. Measurements showed that the yield strength of the cast Mg increased by about seven times whereas the corrosion resistance was not significantly affected by the HPT processing.

https://eprints.bournemouth.ac.uk/31198/

Source: Scopus

Effect of high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg.

Authors: Ahmadkhaniha, D., Huang, Y., Jaskari, M., Järvenpää, A., Sohi, M.H., Zanella, C., Karjalainen, L.P. and Langdon, T.G.

Journal: J Mater Sci

Volume: 53

Issue: 24

Pages: 16585-16597

ISSN: 0022-2461

DOI: 10.1007/s10853-018-2779-1

Abstract:

High-pressure torsion (HPT) processing was applied to cast pure magnesium, and the effects of the deformation on the microstructure, hardness, tensile properties and corrosion resistance were evaluated. The microstructures of the processed samples were examined by electron backscatter diffraction, and the mechanical properties were determined by Vickers hardness and tensile testing. The corrosion resistance was studied using electrochemical impedance spectroscopy in a 3.5% NaCl solution. The results show that HPT processing effectively refines the grain size of Mg from millimeters in the cast structure to a few micrometers after processing and also creates a basal texture on the surface. It was found that one or five turns of HPT produced no significant difference in the grain size of the processed Mg and the hardness was a maximum after one turn due to recovery in some grains. Measurements showed that the yield strength of the cast Mg increased by about seven times whereas the corrosion resistance was not significantly affected by the HPT processing.

https://eprints.bournemouth.ac.uk/31198/

Source: PubMed

Effect of high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg

Authors: Ahmadkhaniha, D., Huang, Y., Jaskari, M., Jarvenpaa, A., Sohi, M.H., Zanella, C., Karjalainen, L.P. and Langdon, T.G.

Journal: JOURNAL OF MATERIALS SCIENCE

Volume: 53

Issue: 24

Pages: 16585-16597

eISSN: 1573-4803

ISSN: 0022-2461

DOI: 10.1007/s10853-018-2779-1

https://eprints.bournemouth.ac.uk/31198/

Source: Web of Science (Lite)

Effect of high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg

Authors: Ahmadkhaniha, D., Huang, Y., Jaskari, M., Järvenpää, A., Sohi, M.H., Zanella, C., Karjalainen, L.P. and Langdon, T.G.

Journal: Journal of Materials Science

Volume: 53

Issue: 24

Pages: 16585-16597

eISSN: 1573-4803

ISSN: 0022-2461

DOI: 10.1007/s10853-018-2779-1

Abstract:

© 2018, The Author(s). High-pressure torsion (HPT) processing was applied to cast pure magnesium, and the effects of the deformation on the microstructure, hardness, tensile properties and corrosion resistance were evaluated. The microstructures of the processed samples were examined by electron backscatter diffraction, and the mechanical properties were determined by Vickers hardness and tensile testing. The corrosion resistance was studied using electrochemical impedance spectroscopy in a 3.5% NaCl solution. The results show that HPT processing effectively refines the grain size of Mg from millimeters in the cast structure to a few micrometers after processing and also creates a basal texture on the surface. It was found that one or five turns of HPT produced no significant difference in the grain size of the processed Mg and the hardness was a maximum after one turn due to recovery in some grains. Measurements showed that the yield strength of the cast Mg increased by about seven times whereas the corrosion resistance was not significantly affected by the HPT processing.

https://eprints.bournemouth.ac.uk/31198/

Source: Manual

Preferred by: Yi Huang

Effect of high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg.

Authors: Ahmadkhaniha, D., Huang, Y., Jaskari, M., Järvenpää, A., Sohi, M.H., Zanella, C., Karjalainen, L.P. and Langdon, T.G.

Journal: Journal of materials science

Volume: 53

Issue: 24

Pages: 16585-16597

eISSN: 1573-4803

ISSN: 0022-2461

DOI: 10.1007/s10853-018-2779-1

Abstract:

High-pressure torsion (HPT) processing was applied to cast pure magnesium, and the effects of the deformation on the microstructure, hardness, tensile properties and corrosion resistance were evaluated. The microstructures of the processed samples were examined by electron backscatter diffraction, and the mechanical properties were determined by Vickers hardness and tensile testing. The corrosion resistance was studied using electrochemical impedance spectroscopy in a 3.5% NaCl solution. The results show that HPT processing effectively refines the grain size of Mg from millimeters in the cast structure to a few micrometers after processing and also creates a basal texture on the surface. It was found that one or five turns of HPT produced no significant difference in the grain size of the processed Mg and the hardness was a maximum after one turn due to recovery in some grains. Measurements showed that the yield strength of the cast Mg increased by about seven times whereas the corrosion resistance was not significantly affected by the HPT processing.

https://eprints.bournemouth.ac.uk/31198/

Source: Europe PubMed Central

Effect of high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg

Authors: Ahmadkhaniha, D., Huang, Y., Jaskari, M., Järvenpää, A., Sohi, M.H., Zanella, C., Karjalainen, L.P. and Langdon, T.G.

Journal: Journal of Materials Science

Volume: 53

Issue: 24

Pages: 16585-16597

ISSN: 0022-2461

Abstract:

© 2018, The Author(s). High-pressure torsion (HPT) processing was applied to cast pure magnesium, and the effects of the deformation on the microstructure, hardness, tensile properties and corrosion resistance were evaluated. The microstructures of the processed samples were examined by electron backscatter diffraction, and the mechanical properties were determined by Vickers hardness and tensile testing. The corrosion resistance was studied using electrochemical impedance spectroscopy in a 3.5% NaCl solution. The results show that HPT processing effectively refines the grain size of Mg from millimeters in the cast structure to a few micrometers after processing and also creates a basal texture on the surface. It was found that one or five turns of HPT produced no significant difference in the grain size of the processed Mg and the hardness was a maximum after one turn due to recovery in some grains. Measurements showed that the yield strength of the cast Mg increased by about seven times whereas the corrosion resistance was not significantly affected by the HPT processing.

https://eprints.bournemouth.ac.uk/31198/

Source: BURO EPrints