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High-entropy Alloys with High Saturation Magnetization, Electrical Resistivity, and Malleability

Zhang, Yong ; Zuo, Tingting ; Cheng, Yongqiang ; Liaw, Peter

Scientific Reports (Nature Publisher Group), Mar 2013, Vol.3, p.1455 [Tạp chí có phản biện]

DOI: 10.1038/srep01455

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  • Nhan đề:
    High-entropy Alloys with High Saturation Magnetization, Electrical Resistivity, and Malleability
  • Tác giả: Zhang, Yong ; Zuo, Tingting ; Cheng, Yongqiang ; Liaw, Peter
  • Chủ đề: Alloys ; Alloys ; Entropy ; Mechanical Properties
  • Là 1 phần của: Scientific Reports (Nature Publisher Group), Mar 2013, Vol.3, p.1455
  • Mô tả: Soft magnetic materials (SMMs) find important applications in a number of areas. The diverse requirements for these applications are often demanding and challenging for the design and fabrication of SMMs. Here we report a new class of FeCoNi(AlSi)x (0 ≤ x ≤ 0.8 in molar ratio) SMMs based on high-entropy alloys (HEAs). It is found that with the compositional and structural changes, the optimal balance of magnetic, electrical, and mechanical properties is achieved at x = 0.2, for which the combination of saturation magnetization (1.15 T), coercivity (1,400 A/m), electrical resistivity (69.5 μΩ·cm), yield strength (342 MPa), and strain without fracture (50%) makes the alloy an excellent SMM. Ab initio calculations are used to explain the high magnetic saturation of the present HEAs and the effects of compositional structures on magnetic characteristics. The HEA-based SMMs point to new directions in both the application of HEAs and the search for novel SMMs.
  • Ngôn ngữ: English
  • Số nhận dạng: DOI: 10.1038/srep01455

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