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Zr基塊體金屬玻璃蠕變行為的納米壓痕研究
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1.蘭州理工大學(xué)省部共建有色金屬先進(jìn)加工與再利用國家重點(diǎn)實驗室;2.中國重汽集團(tuán)濟(jì)南卡車有限公司

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基金項目:

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


Nanoindentation Investigation on Creep Behavior of Zr-Based Bulk Metallic Glass
Author:
Affiliation:

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

Fund Project:

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

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    摘要:

    在本工作中，通過納米壓痕實驗研究了加載速率和保載時間對(Zr0.6336Cu0.1452Ni0.1012Al0.12)97.4Er2.6塊體金屬玻璃（BMG）的蠕變變形行為的影響。實驗結(jié)果表明，合金試樣的蠕變位移隨著加載速率或保載時間的增加而增大。另一方面，合金樣品的硬度（H）也隨著加載速率或保載時間的增加而降低。合金試樣在納米壓痕過程中具有尺寸效應(yīng)，合金試樣的硬度隨著壓痕深度的增加而降低。合金試樣在納米壓痕過程中具有鋸齒流動現(xiàn)象，并且該現(xiàn)象具有速率依賴性。具體而言，隨著加載速率的減小，鋸齒流動現(xiàn)象更加明顯。合金試樣的蠕變應(yīng)力指數(shù)隨著加載速率或保載時間的增加而減小。

    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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李春燕,朱福平,丁娟強(qiáng),尹金鋒,王錚,趙燕春,寇生中. Zr基塊體金屬玻璃蠕變行為的納米壓痕研究[J].稀有金屬材料與工程,2020,49(10):3353~3360.[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.]
DOI：10.12442/j. issn.1002-185X.20190717

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  • 收稿日期:2019-09-02
  • 最后修改日期:2019-12-29
  • 錄用日期:2020-01-03
  • 在線發(fā)布日期: 2020-11-04
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