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Precipitation strengthening in an ultralight magnesium alloy.
Tang, Song; Xin, Tongzheng; Xu, Wanqiang; Miskovic, David; Sha, Gang; Quadir, Zakaria; Ringer, Simon; Nomoto, Keita; Birbilis, Nick; Ferry, Michael.
Afiliação
  • Tang S; School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
  • Xin T; School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia. t.xin@unsw.edu.au.
  • Xu W; School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
  • Miskovic D; School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
  • Sha G; Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China.
  • Quadir Z; Microscopy and Microanalysis Facility, John de Laeter Centre, Curtin University, Bentley, WA, 6845, Australia.
  • Ringer S; School of Aerospace, Mechanical and Mechatronic Engineering and Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia.
  • Nomoto K; School of Aerospace, Mechanical and Mechatronic Engineering and Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia.
  • Birbilis N; Department of Materials Science and Engineering, Monash University, Melbourne, VIC, 3800, Australia.
  • Ferry M; School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia. m.ferry@unsw.edu.au.
Nat Commun ; 10(1): 1003, 2019 03 01.
Article em En | MEDLINE | ID: mdl-30824695
Body-centred cubic magnesium-lithium-aluminium-base alloys are the lightest of all the structural alloys, with recently developed alloy compositions showing a unique multi-dimensional property profile. By hitherto unrecognised mechanisms, such alloys also exhibit exceptional immediate strengthening after solution treatment and water quenching, but strength eventually decreases during prolonged low temperature ageing. We show that such phenomena are due to the precipitation of semi-coherent D03-Mg3Al nanoparticles during rapid cooling followed by gradual coarsening and subsequent loss of coherency. Physical explanation of these phenomena allowed the creation of an exceptionally low-density alloy that is also structurally stable by controlling the lattice mismatch and volume fraction of the Mg3Al nanoparticles. The outcome is one of highest specific-strength engineering alloys ever developed.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article