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Effect of Ni with Cu content ratio on thermal stability and Mechanical Properties of Zr-based Amorphous Alloy
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State Key Laboratory of Gansu Advanced Nonferrous Metal Materials,Lanzhou University of Technology,State Key Laboratory of Gansu Advanced Nonferrous Metal Materials,Lanzhou University of Technology,State Key Laboratory of Gansu Advanced Nonferrous Metal Materials,Lanzhou University of Technology,State Key Laboratory of Gansu Advanced Nonferrous Metal Materials,Lanzhou University of Technology,

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TG139+.8

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    Abstract:

    The Zr70Al8Cu22-xNix(x=8.5,9,9.5,10,10.5,11)bulk amorphous alloy rods with 2mm diameters were prepared by copper mold casting technique,and the effect of Ni/Cu content ratio on thermal stability and mechanical properties of Zr-based amorphous alloys were investigated by differential scanning calorimeter(DSC)and uniaxial compression test methods.The results show that the value of supercooled liquid regionΔTx change from 80K to 81Kwith the Ni/Cu content ratio increase,but theΔTx have a bigger value than other alloys when Ni/Cu content ratio arrive 0.63 and 0.76,when Ni/Cu content ratio arrive 0.76,which has a better thermal stability because of itsΔTx value is 89K.And the plastic strain exhabit a downward tend with the Ni/Cu content ratio increase,but there exists a unnormal larger value when Ni/Cu content ratio arrive 0.76,which has good plastic strain,and the compressive strength has a downward tend over all with wave and changeless nature.And the young modulus value arrives the maximum value 80 GPa when Ni/Cu content ratio is 0.63,but other alloys change from 58 GPa to 65 GPa.In totally, the plastic strain,compressive strength and young modulus also arrive the maximum value when Ni/Cu content ratio is 0.63.

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[Ai Yajun, Kou Shengzhong, Zhang Wei, Sun Weimin, liguang. Effect of Ni with Cu content ratio on thermal stability and Mechanical Properties of Zr-based Amorphous Alloy[J]. Rare Metal Materials and Engineering,2018,47(8):2585~2591.]
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History
  • Received:July 27,2016
  • Revised:September 18,2016
  • Adopted:September 27,2016
  • Online: October 17,2018