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Nanoindentation Investigation on Creep Behavior of Zr-Based Bulk Metallic Glass
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1.State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals,Lanzhou University of Technology,Lanzhou Gansu;2.Sinotruk Group Jinan Truck Company Limited,Jinan

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Fund Project:

NSFC(No.51661016, No.51861021, No.51571105, No.51661017), Wenzhou Public Welfare Science and Technology Project (G20170019)

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    Abstract:

    In the present work, the effect of loading rate and holding time on the creep deformation behavior of (Zr0.6336Cu0.1452Ni0.1012Al0.12)97.4Er2.6 bulk metallic glass (BMG) was investigated by using nanoindentation technique. Experimental results demonstrate that the creep displacement of specimen increases with the increase of loading rate or holding time. On the other hand, the hardness (H) of specimen falls with the rise of loading rate or holding time. The H drops with the growth of indentation depth during the nanoindentation process, which indicates that specimen has a size effect. Specimen has a serrated flow phenomenon which has rate dependence. Specifically, as the loading rate declines, the serrated flow phenomenon becomes more obvious. The creep stress exponent of specimen goes down with the increases of loading rate or holding time.

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[Li Chunyan, Zhu Fuping, Ding Juanqiang, Yin Jinfeng, Wang Zheng, Zhao Yanchun, Kou Shengzhong. Nanoindentation Investigation on Creep Behavior of Zr-Based Bulk Metallic Glass[J]. Rare Metal Materials and Engineering,2020,49(10):3353~3360.]
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History
  • Received:September 02,2019
  • Revised:December 29,2019
  • Adopted:January 03,2020
  • Online: November 04,2020
  • Published: