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- W2393315423 abstract "The influence of thermal-rate treatment on the corrosion resistance of Mg-7Al-0.4Zn-0.2Mn(AZ70)alloy was studied by observing corrosion morphology,measuring corrosion potential and salt-spray corrosion rate.The results show that the corrosion behavior of AZ70 alloy depends on both its microstructure and iron content.When T_s is 850 ℃,grains are fined and the size of β phase and the distance between β phase pasticles are small.The corrosion barrier effect of β phase on α phase is enhanced and the iron content does not increase much at this temperature.So the corrosion resistance is improved.The corrosion resistance of AZ70 alloy falls off when T_s is 890 ℃,which attributes to the presence of microporosity,hot cracking and increase of iron content.At the same superheat-temperature,the corrosion resistance is improved with the increase of chilling rate.In comprehensive consideration of microstructure and corrosion resistance of AZ70 alloy,the optimal TRT process is that T_s=850 ℃ and V_c=2.0 ℃/s.In that case,the corrosion potential is 15 mV higher and the salt-spray corrosion rate is 21.9% lower than that of un-TRT treated alloy." @default.
- W2393315423 created "2016-06-24" @default.
- W2393315423 creator A5056800692 @default.
- W2393315423 date "2006-01-01" @default.
- W2393315423 modified "2023-09-23" @default.
- W2393315423 title "INFLUENCE OF THERMAL-RATE TREATMENT ON THE CORROSION RESISTANCE OF Mg-7Al-0.4Zn-0.2Mn ALLOY" @default.
- W2393315423 hasPublicationYear "2006" @default.
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