0.5MnNi1.5CrNbx(x=0,0.05,0.1,摩爾比)高熵合金,并分析了不同Nb含量對其組織和力學(xué)性能的影響。結(jié)果表明,不含Nb元素的合金具有單相fcc結(jié)構(gòu),其抗拉強度和斷裂延伸率(即延展性)分別為519 MPa和47%。添加少量的Nb(x=0.05)后出現(xiàn)(200)織構(gòu)和少量Fe2Nb Laves相,合金的延展性增加到55%,并且抗拉強度增加到570 MPa。當Nb含量增加到x=0.1時,織構(gòu)減少,而Fe2Nb Laves相增多,抗拉強度和延展性分別為650 MPa和45%。"/>

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Nb含量對Fe0.5MnNi1.5CrNb x 高熵合金微觀結(jié)構(gòu)和力學(xué)性能的影響
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作者單位:

1.南京理工大學(xué) 材料科學(xué)與工程學(xué)院,江蘇 南京 210094;2.阿德萊德大學(xué) 機械工程學(xué)院,澳大利亞 阿德萊德 5005

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基金項目:

江蘇省科技進步項目,國家自然科學(xué)基金項目


Effect of Nb Addition on Microstructure and Mechanical Properties of Fe0.5MnNi1.5CrNb x High-Entropy Alloys
Author:
Affiliation:

1.College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;2.School of Mechanical Engineering, University of Adelaide, SA 5005, Australia

Fund Project:

Science and Technology Advancement Project in Jiangsu Province (BE2018753/KJ185629); National Natural Science Foundation of China (51571118, 51371098); 2020 Extracurricular Academic Research Fund for College Students of Nanjing University of Science and Technology

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    摘要:

    采用真空感應(yīng)熔煉法制備了Fe0.5MnNi1.5CrNbxx=0,0.05,0.1,摩爾比)高熵合金,并分析了不同Nb含量對其組織和力學(xué)性能的影響。結(jié)果表明,不含Nb元素的合金具有單相fcc結(jié)構(gòu),其抗拉強度和斷裂延伸率(即延展性)分別為519 MPa和47%。添加少量的Nb(x=0.05)后出現(xiàn)(200)織構(gòu)和少量Fe2Nb Laves相,合金的延展性增加到55%,并且抗拉強度增加到570 MPa。當Nb含量增加到x=0.1時,織構(gòu)減少,而Fe2Nb Laves相增多,抗拉強度和延展性分別為650 MPa和45%。

    Abstract:

    Fe0.5MnNi1.5CrNbx (x=0, 0.05, 0.1, molar ratio) high-entropy alloys were prepared by vacuum induction melting. The effect of Nb content on the microstructure and mechanical properties of the new alloy was analyzed. The results show that the Nb-free alloy has a single-phase fcc structure, and its tensile strength and elongation to failure (i.e., ductility) are 519 MPa and 47%, respectively. With the addition of Nb (x=0.05), the (200) texture and Fe2Nb Laves phase appear. The ductility of alloy increases to 55%, while the tensile strength increases to 570 MPa. When the molar ratio of Nb increases to 0.1, the texture diminishes, whereas the volume fraction of the Fe2Nb phase is increased. The resultant tensile strength and ductility are 650 MPa and 45%, respectively.

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趙晨朦,伍昊,張繼峰,朱和國,謝宗翰.Nb含量對Fe0.5MnNi1.5CrNb x 高熵合金微觀結(jié)構(gòu)和力學(xué)性能的影響[J].稀有金屬材料與工程,2021,50(8):2783~2788.[Zhao Chenmeng, Wu Hao, Zhang Jifeng, Zhu Heguo, Xie Zonghan. Effect of Nb Addition on Microstructure and Mechanical Properties of Fe0.5MnNi1.5CrNb x High-Entropy Alloys[J]. Rare Metal Materials and Engineering,2021,50(8):2783~2788.]
DOI:10.12442/j. issn.1002-185X.20200485

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歷史
  • 收稿日期:2020-07-08
  • 最后修改日期:2020-09-13
  • 錄用日期:2020-09-18
  • 在線發(fā)布日期: 2021-09-07
  • 出版日期: 2021-08-31