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首页> 外文期刊>Journal of Materials Research >Influence of heat treatment on microstructure, mechanical behavior, and soft magnetic properties in an fcc-based Fe_(29)Co_(28)Ni_(29)Cu_7Ti_7 high-entropy alloy
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Influence of heat treatment on microstructure, mechanical behavior, and soft magnetic properties in an fcc-based Fe_(29)Co_(28)Ni_(29)Cu_7Ti_7 high-entropy alloy

机译：热处理对fcc基Fe_（29）Co_（28）Ni_（29）Cu_7Ti_7高熵合金的组织，力学行为和软磁性能的影响

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摘要

The influence of heat treatment (homogenization) on the microstructure, mechanical behavior, and soft magnetic properties of a face-centered cubic (fcc)-based high-entropy alloy (HEA), Fe29Co28Ni29Cu7Ti7, fabricated by casting, was investigated in detail. The as-cast Fe29Co28Ni29Cu7Ti7 HEA was composed of a primary fcc phase containing coherent dispersed L1(2) nanoprecipitates and trace amounts of a needle-like phase. The tensile yield strength (sigma(0.2)), ultimate strength, and total elongation of the as-cast alloy are 917 MPa, 1060 MPa, and 1.8%, respectively. Following homogenization, the alloy having a single fcc phase shows a decrease of similar to 55% in yield strength and a decrease of similar to 36% in ultimate strength; however, the total elongation is increased from 1.8 to 52%. Saturation magnetization (M-sat) is decreased from 111.54 to 110.34 Am-2/kg, by contrast, coercivity (H-c) is increased from 266.65 to 966.89 A/m. The dissolution of precipitates and grain growth are mainly responsible for the changes in magnetic properties and mechanical behavior.
机译：详细研究了热处理（均质化）对通过铸造制造的面心立方立方（fcc）基高熵合金Fe29Co28Ni29Cu7Ti7的显微组织，力学行为和软磁性能的影响。铸态的Fe29Co28Ni29Cu7Ti7 HEA由主要的fcc相组成，该相包含相干分散的L1（2）纳米沉淀和痕量的针状相。铸态合金的拉伸屈服强度（sigma（0.2）），极限强度和总伸长率分别为917 MPa，1060 MPa和1.8％。均质后，具有单一fcc相的合金的屈服强度降低约55％，极限强度降低约36％。但是，总伸长率从1.8％增加到52％。相比之下，饱和磁化强度（M-sat）从111.54 Am / kg降低到110.34 Am-2 / kg，矫顽力（H-c）从266.65 A / m增加到966.89 A / m。析出物的溶解和晶粒的长大主要是造成磁性和机械性能变化的原因。

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  • 来源
    《Journal of Materials Research》 |2018年第15期|2214-2222|共9页
  • 作者

    Fu Zhiqiang; MacDonald Benjamin E.; Monson Todd C.; Zheng Baolong; Chen Weiping; Lavernia Enrique J.;

  • 作者单位

    Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA;

    Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA;

    Sandia Natl Labs, Nanoscale Sci, Albuquerque, NM 87185 USA;

    Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA;

    South China Univ Technol, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Guangdong, Peoples R China;

    Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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