Title :
Deformation behaviour of nanocrystalline Mg-Al alloys during nanoindentation
Author :
Diao, Hui ; Yan, Cheng ; Bell, John ; Li Lu ; Deng, Shengtao ; Zhang, Haifeng ; Zhang, Guangping
Author_Institution :
Fac. of Built Environ. & Eng., Queensland Univ. of Technol., Brisbane, QLD, Australia
Abstract :
The deformation behaviour of Mg-5%Al alloys and its dependence with gain size and strain rate were investigated using nanoindentation. The grain sizes were successfully reduced below 100 nm via mechanical alloying method. It was found that the strain rate sensitivity increased with decreasing grain size. The smaller activation volumes and the plastic deformation mechanisms involving grain boundary activities are considered to contribute to the increase of strain rate sensitivity in the nanocrystalline alloys.
Keywords :
aluminium alloys; deformation; grain boundaries; grain size; magnesium alloys; mechanical alloying; nanoindentation; nanostructured materials; MgAl; activation volumes; deformation behaviour; grain boundary; grain size; mechanical alloying; nanocrystalline alloys; nanoindentation; plastic deformation mechanisms; strain rate; Alloying; Capacitive sensors; Grain size; Inorganic materials; Materials science and technology; Mechanical engineering; Microstructure; Milling; Plastics; Systems engineering and theory;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5424788
