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Effects of Temperature on Serrated Flows of Al 0.5 CoCrCuFeNi High-Entropy Alloy

Chen, Shuying ; Xie, Xie ; Chen, Bilin ; Qiao, Junwei ; Zhang, Yong ; Ren, Yang ; Dahmen, Karin ; Liaw, Peter

JOM, 2015, Vol.67(10), pp.2314-2320 [Tạp chí có phản biện]

ISSN: 1047-4838 ; E-ISSN: 1543-1851 ; DOI: 10.1007/s11837-015-1580-8

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  • Nhan đề:
    Effects of Temperature on Serrated Flows of Al 0.5 CoCrCuFeNi High-Entropy Alloy
  • Tác giả: Chen, Shuying ; Xie, Xie ; Chen, Bilin ; Qiao, Junwei ; Zhang, Yong ; Ren, Yang ; Dahmen, Karin ; Liaw, Peter
  • Chủ đề: Alloys – Analysis
  • Là 1 phần của: JOM, 2015, Vol.67(10), pp.2314-2320
  • Mô tả: Compression behavior of the Al 0.5 CoCrCuFeNi high-entropy alloy (HEA) was studied at different temperatures from 673 K to 873 K at a low strain rate of 5 × 10 −5 /s to investigate the temperature effect on the mechanical properties and serration behavior. The face-centered-cubic (fcc) structure is confirmed at the lower temperature of 673 K and 773 K, and a structure of mixed fcc and body-centered cubic (bcc) is identified at a higher temperature of 873 K after compression tests using high-energy synchrotron x-ray diffraction. By comparing the stress–strain curves at different temperatures, two opposite directions of serrations types were found, named upward serrations appearing at 673 K and 773 K and downward serrations at 873 K, which may be due to dynamic strain aging.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1047-4838 ; E-ISSN: 1543-1851 ; DOI: 10.1007/s11837-015-1580-8

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