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- W2372326195 abstract "Cr/ NbCr2 alloy with the composition of 88at%Cr and 12at%Nb(Cr-12Nb) was prepared by mechanical alloying and hot pressing.Then,the effects of thermal exposure on microstructure and properties were investigated after thermal exposure at 800℃ in vacuum for different time,respectively.The results indicate that some microscopic NbCr2Laves phase particles are precipitated within 30h treatment.Then,with the thermal exposure time further increasing,no more NbCr2 particles are precipitated and the former NbCr2 particles appear to certain coarsening.While,the relative density of Cr-12Nb alloy increases slightly during the whole treatment process.After thermal exposure,the mechanical properties of the alloy also show different from the original alloy.The value of Vickers hardness of Cr-12Nb alloy increases firstly and then declines with the increase of thermal exposure time.Vickers hardness of Cr-12Nb alloy can reach 6.1 GPa at 50 h which increases by 3.3% than that of original alloy.With the prolong of thermal exposure time the yield strength,compressive strength and strain of Cr-12Nb alloy show the same trend,firstly increase and then decrease with the prolong of thermal exposure time.Compared with original alloy,the yield strength and compressive strength of exposed Cr-12Nb alloy show higher.After 50 h thermal exposure,the yield strength and compressive strength vary from 1843 MPa and 1911 MPa to 1884 MPa and 2372 MPa,respectively.While,the strain reaches maximum value 13.2% at 10 h and then declines to 8.1% which is reduced by 33.6% than that of original alloy at 50h." @default.
- W2372326195 created "2016-06-24" @default.
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- W2372326195 date "2013-01-01" @default.
- W2372326195 modified "2023-09-24" @default.
- W2372326195 title "Effect of Thermal Exposure on Microstructure and Properties of Cr-12Nb Alloy" @default.
- W2372326195 hasPublicationYear "2013" @default.
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