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金屬薄膜蠕變變形與材料結(jié)構(gòu)的相關(guān)性研究
作者:
作者單位:

1.西安稀有金屬材料研究院有限公司;2.蘭州理工大學(xué);3.西安石油大學(xué)

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基金項(xiàng)目:

國(guó)家自然科學(xué)基金（項(xiàng)目號(hào)52101099），陜西省自然科學(xué)青年基金（項(xiàng)目號(hào)2021JQ-977, 2020JQ-924, 2021JQ-976）,國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


The Relationship Between Creep Deformation And Materials Structure Of Metal Thin Films
Author:
Affiliation:

Xi’an Rare Metal Materials Institute Co.Ltd

Fund Project:

National Natural Science Foundation of China (52101099），Natural Science Foundation of Shaanxi Province（2021JQ-977, 2020JQ-924, 2021JQ-976）

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    摘要:

    本文采用納米壓入實(shí)驗(yàn)方法評(píng)價(jià)金屬薄膜室溫蠕變變形行為與材料微觀組織結(jié)構(gòu)的關(guān)系。金屬薄膜分別選取納米晶體心立方（BCC）金屬M(fèi)o、納米晶面心立方（FCC）金屬Ni以及非晶CuZr為研究材料，加載速率為0.005，0.05，0.1，0.2 s-1。研究發(fā)現(xiàn)BCC-Mo、FCC-Ni以及非晶CuZr蠕變變形均表現(xiàn)出很強(qiáng)的加載應(yīng)變速率依賴性，究其原因與其主導(dǎo)變形機(jī)制相關(guān)。BCC-Mo蠕變行為由螺型位錯(cuò)主導(dǎo)的混合位錯(cuò)運(yùn)動(dòng)為主，F(xiàn)CC-Ni蠕變變形由晶界發(fā)射不全位錯(cuò)主導(dǎo)，非晶CuZr蠕變行為由剪切變形轉(zhuǎn)變區(qū)（STZ）主導(dǎo)變行為主。

    Abstract:

    The relationship between the microstructure and the creep behavior of metal films at room temperature was evaluated by nanoindentation experiment. Nanocrystalline body center-cubic (BCC) metal Mo, nanocrystalline face center-cubic (FCC) metal Ni and amorphous CuZr were selected as the study materials, and the loading rates were 0.005, 0.05, 0.1 and 0.2s-1.According to research, the creep deformation of BCC-Mo, FCC-Ni and amorphous CuZr exhibits strong loading strain rate dependence, and the main reason is related to the dominant deformation mechanism.The creep behavior of BCC-Mo is dominated by the mixed dislocation movement dominated by screw dislocation, the creep behavior of FCC-Ni is dominated by the grain boundary emission incomplete dislocation, and the creep behavior of amorphous CuZr is dominated by the shear deformation transition zone (STZ).

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引用本文

吳金平,李春晨,趙彬,邱龍時(shí),辛超,潘曉龍,趙恒,李歡,趙婧.金屬薄膜蠕變變形與材料結(jié)構(gòu)的相關(guān)性研究[J].稀有金屬材料與工程,2022,51(5):1674~1680.[Wu Jinping, Li Chuncheng, Zhao Bin, Qiu Longshi, Xin Chao, Pan Xiaolong, Zhao Heng, Li Huan, Zhao Jing. The Relationship Between Creep Deformation And Materials Structure Of Metal Thin Films[J]. Rare Metal Materials and Engineering,2022,51(5):1674~1680.]
DOI：10.12442/j. issn.1002-185X.20210833

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  • 收稿日期:2021-09-18
  • 最后修改日期:2021-11-10
  • 錄用日期:2021-11-25
  • 在線發(fā)布日期: 2022-06-09
  • 出版日期: 2022-05-30