Effects of Ion Irradiation on Mechanical Property of Zr50.7Cu28Ni9Al12.3 Amorphous Alloy

doi:10.11933/j.issn.1007-9289.20171019001

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China Surface Engineering ›› 2018, Vol. 31 ›› Issue (3) : 46-52. DOI: 10.11933/j.issn.1007-9289.20171019001

Effects of Ion Irradiation on Mechanical Property of Zr_50.7Cu₂₈Ni₉Al_12.3 Amorphous Alloy

JIN En-ji, TANG Mei-xiong, ZHAO Yun-biao, HAN Dong, ZHANG Kun, WEI Bing-chen and ZHAO Zi-qiang

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Amorphous alloy is a type of promising nuclear material. The effects of ion irradiation on the mechanical property of amorphous alloy determine its application value. The mechanical properties of Zr_50.7Cu₂₈Ni₉Al_12.3 amorphous alloy was investigated with different doses of Au ions irradiation. Atomic force microscopy and positron annihilation lifetime spectroscopy experiments show that ion irradiation can enlarge the free volume and decrease the density. Transmission electron microscope analysis show that the nanocrystallines begin to segregate in amorphous alloy at 50 dpa, and the size and density of nanocrystallines increase with increasing irradiation dose. Nanoindentation testing show the hardness of the amorphous alloy decreases at a low irradiation dose while increases at a high irradiation dose. The variation of hardness of amorphous alloy can be ascribed to a consequence of the competition mechanism between free volume and nanocrystallines. Free volume can soften the amorphous alloy, while segregated nanocrystallines can harden the amorphous alloy.

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ion irradiation;amorphous alloy;mechanical property;free volume;nanocrystallines

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JIN En-ji, TANG Mei-xiong, ZHAO Yun-biao, HAN Dong, ZHANG Kun, WEI Bing-chen and ZHAO Zi-qiang. Effects of Ion Irradiation on Mechanical Property of Zr_50.7Cu₂₈Ni₉Al_12.3 Amorphous Alloy[J]. China Surface Engineering, 2018, 31(3): 46-52 https://doi.org/10.11933/j.issn.1007-9289.20171019001

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2023-12-19

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