Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/86037
Title: Nanoparticles in magnesium alloys: Novel nanoscale phenomena to significant macroscale effects
Authors: Paramsothy, M. 
Gupta, M. 
Keywords: Deformation mechanism
Magnesium alloys/nanocomposites
Mechanical properties
Nanograins
Nanoparticles
Nanorods
Regulated precipitation
Issue Date: 2013
Source: Paramsothy, M.,Gupta, M. (2013). Nanoparticles in magnesium alloys: Novel nanoscale phenomena to significant macroscale effects. Materials Science and Technology Conference and Exhibition 2013, MS and T 2013 1 : 116-125. ScholarBank@NUS Repository.
Abstract: It is well known that ex-situ microparticles significantly strengthen magnesium alloys with consequent reduction in ductility. It is, however, not well known that ex-situ nanoparticles possess sufficiently smaller size (and significantly higher surface area) that enables intermetallic precipitation regulation at nanoscale in magnesium alloys. In this study, the intermetallic precipitation regulation ability of selected ex-situ nanoparticles (cabon nanotubes (CNTs) and Si3N4) in ZK60A magnesium alloy and associated tensile deformation mechanisms (both as nanoscale phenomena leading to the macroscale effect of significant increment in tensile ductility) are investigated. Also, the in-situ creation of nanoparticles in magnesium alloy and consequent simultaneous significant improvement of tensile strength and ductility is investigated. Here, metallic Zn was dissolved in molten ZK60A to predominantly form Mg-Zn nanorods in the alloy matrix. Finally, the significant increase in strength of AZ81 magnesium alloy due to CNT addition is discussed, this being attributed to the presence of hard segments consisting of nanograins due to nanoscale Al4C3 precipitation. Copyright © 2013 MS&T'13®.
Source Title: Materials Science and Technology Conference and Exhibition 2013, MS and T 2013
URI: http://scholarbank.nus.edu.sg/handle/10635/86037
ISBN: 9781629933092
Appears in Collections:Staff Publications

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