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- W2364817943 abstract "Impression creep property of AZ81 magnesium alloy was investigated by a special apparatus.The impression mechanism of the alloy was analyzed by constructing constitutive equations of the impression steady creep.The microstructure and composition of precipitated phases of the alloy before and after creep were analyzed by scanning electron microscopy(SEM)and X-ray diffraction(XRD).The results show that the stress exponent n of die-cast AZ81 alloy is 2.08 and creep activation energy QC is 87.26 kJ/mol.Firstly Mg17Al12(β) phase is precipitated discontinuously,and then continuous precipitation of Mg17Al12 phase gadually occurs in the process of the impression creep.It can be seen from the SEM images that the creep resistance of the alloy decreases because of the precipitation of Mg17Al12 phase at grain boundaries.The higher the creep temperature is,the larger the size of matrix grains and precipitated phase is.The impression creep mechanism of die-cast AZ81 alloy is dislocation slipping by grain boundary diffusion." @default.
- W2364817943 created "2016-06-24" @default.
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- W2364817943 date "2012-01-01" @default.
- W2364817943 modified "2023-09-23" @default.
- W2364817943 title "Impression creep property of AZ81 magnesium alloy" @default.
- W2364817943 hasPublicationYear "2012" @default.
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