“…For the material nearest to the mould wall, with the highest cooling rate, this relationship was well correlated to the Hall-Petch relationship. A similar study by Sharifi et al [41] showed an increase in flow stress in samples with a refined cast grain structure in AM60 and AZ91 at low levels of plastic strain. The tensile properties affected by dendrite arm spacing have also been thoroughly studied for magnesium-aluminum alloys and follow the Hall-Petch relationship with respect to increasing yield strength with decreasing grain size [42].…”
Section: Effect Of Initial State On Deformation Behavioursupporting
I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners.I understand that my thesis may be made electronically available to the public.
“…For the material nearest to the mould wall, with the highest cooling rate, this relationship was well correlated to the Hall-Petch relationship. A similar study by Sharifi et al [41] showed an increase in flow stress in samples with a refined cast grain structure in AM60 and AZ91 at low levels of plastic strain. The tensile properties affected by dendrite arm spacing have also been thoroughly studied for magnesium-aluminum alloys and follow the Hall-Petch relationship with respect to increasing yield strength with decreasing grain size [42].…”
Section: Effect Of Initial State On Deformation Behavioursupporting
I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners.I understand that my thesis may be made electronically available to the public.
“…This unusual structure feature may have contributed to rapid degradation of aluminide coating after oxidation test due to large difference in the thermal expansion coefficients of the Cr-W rich layer and aluminide coating. The stress developed in the Cr-W rich layer and the aluminide coating due to thermal expansion mismatch are sufficient to cause cracking of one or both layers [1,[20][21][22]. Although there appears to be some micro-pores running through the interdiffusion zone in Fig.…”
Section: Microstructure Of Aluminide Coatings After Testsmentioning
“…Magnesium alloys have received considerable research for potentially wider and larger applications in the electronics, automobile and aerospace industries because of their low density, high specific strength and excellent machinability [1][2][3]. Despite the considerable efforts made, the applications of magnesium alloys in engineering applications, such as AZ91D alloy, remains limited as they suffer from relative low strength and low ductility [4].…”
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.