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Optimizing mechanical properties of AlCoCrFeNiTi x high-entropy alloys by tailoring microstructures

Wang, Yinfeng ; Ma, Shengguo ; Chen, Xiaohua ; Shi, Juyan ; Zhang, Yong ; Qiao, Junwei

Acta Metallurgica Sinica (English Letters), 2013, Vol.26(3), pp.277-284 [Tạp chí có phản biện]

ISSN: 1006-7191 ; E-ISSN: 2194-1289 ; DOI: 10.1007/s40195-012-0174-5

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  • Nhan đề:
    Optimizing mechanical properties of AlCoCrFeNiTi x high-entropy alloys by tailoring microstructures
  • Tác giả: Wang, Yinfeng ; Ma, Shengguo ; Chen, Xiaohua ; Shi, Juyan ; Zhang, Yong ; Qiao, Junwei
  • Chủ đề: High-entropy alloy ; Microstructure ; Compressive property ; Hardness ; Heat treatment
  • Là 1 phần của: Acta Metallurgica Sinica (English Letters), 2013, Vol.26(3), pp.277-284
  • Mô tả: The effects of Ti addtions and the heat treatment on the mechanical properties of AlCoCrFeNiTi x ( x = 0, 0.2, 0.3, 0.4 and 0.5) high-entropy alloys (HEAs) were studied. The results show that the dendrite phase with a body-centered-cubic (bcc) structure transforms into the interdendrite phase with a new bcc structure. With the increase of the Ti contents and heat-treatment temperature, the average hardness and yield strengths are greatly improved, and the highest hardness and yielding strength are 583 HV and 2.07 GPa, respectively in the investigated HEA system. The as-cast and annealed HEAs exhibit excellent mechanical properties, combining with high yielding strength and plasticity. The solid solution strengthening mechanism of Ti additions is responsible for the strengthening effect of AlCoCrFeNiTi x HEAs.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1006-7191 ; E-ISSN: 2194-1289 ; DOI: 10.1007/s40195-012-0174-5

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