Predicting the flow stress of high pressure die cast magnesium alloys

Influence of As-cast Microstructure on Forging Behaviour of Magnesium Alloy AZ80

“…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].…”

Isothermal oxidation and hot corrosion behaviors of diffusion aluminide coatings deposited by chemical vapor deposition

“…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.…”

Microstructures and mechanical properties of AZ91 magnesium alloy processed by multidirectional forging under decreasing temperature conditions

“…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].…”