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Nano-coupled heterostructure induced excellent mechanical and tribological properties in AlCoCrFeNi high entropy alloy

Journal Article


Abstract


  • © 2020 High strength, ductile and wear-resistant alloys are required for engineering applications. This work reports a good combination of mechanical and tribological properties in (NiAl)x(FeCr)yCo(x+y)/2 high-entropy alloys (HEAs) via adjusting A2/B2 nano-coupled heterostructure. The A2/B2 heterostructure switches from weave to network structure by increasing x:y ratio from 1:1.3 to 1:1, and eventually forms an island structure when x:y ratio is 1.3:1. Concurrently, the grain boundary FCC phase transforms from continuous to discontinuous as its fraction decreases. The island-like A2/B2 heterostructure provides (NiAl)1.3(FeCr)Co1.15 HEA a good compressive yield strength of 1.7 GPa and plasticity of 23.4%. Additionally, (NiAl)1.3(FeCr)Co1.15 HEA has the promising wear-resistance from room temperature to 800 °C, ascribing to its excellent strength and the protective tribo-layer at high temperatures.

Authors


  •   Geng, Yushan (external author)
  •   Tan, Hui (external author)
  •   Wang, Long (external author)
  •   Tieu, A Kiet.
  •   Chen, Jiao (external author)
  •   Cheng, Jun (external author)
  •   Yang, Jun (external author)

Publication Date


  • 2021

Citation


  • Geng, Y., Tan, H., Wang, L., Tieu, A., Chen, J., Cheng, J. & Yang, J. (2021). Nano-coupled heterostructure induced excellent mechanical and tribological properties in AlCoCrFeNi high entropy alloy. Tribology International, 154

Scopus Eid


  • 2-s2.0-85091975289

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/4434

Volume


  • 154

Place Of Publication


  • United Kingdom

Abstract


  • © 2020 High strength, ductile and wear-resistant alloys are required for engineering applications. This work reports a good combination of mechanical and tribological properties in (NiAl)x(FeCr)yCo(x+y)/2 high-entropy alloys (HEAs) via adjusting A2/B2 nano-coupled heterostructure. The A2/B2 heterostructure switches from weave to network structure by increasing x:y ratio from 1:1.3 to 1:1, and eventually forms an island structure when x:y ratio is 1.3:1. Concurrently, the grain boundary FCC phase transforms from continuous to discontinuous as its fraction decreases. The island-like A2/B2 heterostructure provides (NiAl)1.3(FeCr)Co1.15 HEA a good compressive yield strength of 1.7 GPa and plasticity of 23.4%. Additionally, (NiAl)1.3(FeCr)Co1.15 HEA has the promising wear-resistance from room temperature to 800 °C, ascribing to its excellent strength and the protective tribo-layer at high temperatures.

Authors


  •   Geng, Yushan (external author)
  •   Tan, Hui (external author)
  •   Wang, Long (external author)
  •   Tieu, A Kiet.
  •   Chen, Jiao (external author)
  •   Cheng, Jun (external author)
  •   Yang, Jun (external author)

Publication Date


  • 2021

Citation


  • Geng, Y., Tan, H., Wang, L., Tieu, A., Chen, J., Cheng, J. & Yang, J. (2021). Nano-coupled heterostructure induced excellent mechanical and tribological properties in AlCoCrFeNi high entropy alloy. Tribology International, 154

Scopus Eid


  • 2-s2.0-85091975289

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/4434

Volume


  • 154

Place Of Publication


  • United Kingdom