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CoCrxNi中熵合金組織及力學(xué)性能研究
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1.江西省金屬材料微結(jié)構(gòu)調(diào)控重點實驗室(南昌航空大學(xué));2.江西省金屬材料微結(jié)構(gòu)調(diào)控重點實驗室南昌航空大學(xué);3.江西機電職業(yè)技術(shù)學(xué)院機械工程學(xué)院

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江西省金屬材料微結(jié)構(gòu)調(diào)控重點實驗室開放基金項目（項目號EJ201901430 ）


Research on Microstructure and Mechanical Properties of CoCrxNi Medium-Entropy Alloy
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Jiangxi Province Key Laboratory of Metallic Material Microstructure Control(Nanchang Hangkong University)

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    摘要:

    本文以等原子比CoCrNi中熵合金為基礎(chǔ)，采用真空電弧熔煉爐制備了CoCrxNi(x=1.0, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0)中熵合金，研究了Cr元素含量對合金微觀組織及力學(xué)性能的影響。結(jié)果表明：CoCrxNi(x=1.0, 1.5, 1.6)中熵合金為單一的面心立方相(FCC)；隨著Cr元素含量增加，CoCrxNi(x=1.7, 1.8, 1.9, 2.0)中熵合金的FCC相基體中析出了體心立方相的富Cr條狀組織；合金的強度、硬度隨著Cr元素含量的增加而不斷提高，但塑性惡化；與等原子比CoCrNi中熵合金相比，CoCr1.7Ni中熵合金在保持較高塑性的同時，強度、硬度顯著提高。

    Abstract:

    In this paper, based on the CoCrNi medium-entropy alloy with equal atomic ratio, the CoCrxNi (x=1.0, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0) medium-entropy alloy was prepared by a vacuum arc melting furnace, and the effect of Cr element content on the alloy microstructure was studied. The influence of organization and mechanical properties. The results show that CoCrxNi (x=1.0, 1.5, 1.6) medium-entropy alloy is a single face-centered cubic phase (FCC); With the increase of Cr content, Cr rich strip structure of body centered cubic phase precipitated in FCC phase matrix of entropy alloy in CoCrxNi (x=1.7, 1.8, 1.9, 2.0) medium-entropy alloy; the strength and hardness of the alloy continue to increase with the increase of the Cr element content, but the plasticity deteriorates; compared with the equal atomic ratio CoCrNi medium entropy alloy, While maintaining high plasticity, the strength and hardness of CoCr1.7Ni medium-entropy alloy are significantly improved.

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舒小勇,邱盼盼,胡林麗,劉日,郭峰,楊斯蒙,俞峰,鐘榮方. CoCrxNi中熵合金組織及力學(xué)性能研究[J].稀有金屬材料與工程,2023,52(2):551~558.[Shu Xiaoyong, Qiu Panpan, Hu Linli, Liu Ri, Guo Feng, Yang Simeng, Yu Feng, Zhong Rongfang. Research on Microstructure and Mechanical Properties of CoCrxNi Medium-Entropy Alloy[J]. Rare Metal Materials and Engineering,2023,52(2):551~558.]
DOI：10.12442/j. issn.1002-185X.20211148

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歷史
  • 收稿日期:2021-12-26
  • 最后修改日期:2022-02-12
  • 錄用日期:2022-02-28
  • 在線發(fā)布日期: 2023-03-09
  • 出版日期: 2023-02-28