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Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy

Senkov, O.N. ; Scott, J.M. ; Senkova, S.V. ; Miracle, D.B. ; Woodward, C.F.

Journal of alloys and compounds, 2011-05, Vol.509 (20), p.6043-6048 [Periódico revisado por pares]

Kidlington: Elsevier B.V

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Título:
Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy
Autor: Senkov, O.N. ; Scott, J.M. ; Senkova, S.V. ; Miracle, D.B. ; Woodward, C.F.
Assuntos: Alloy design ; Applied sciences ; Body centered cubic lattice ; Cross-disciplinary physics: materials science; rheology ; Crystallography ; Density ; Elasticity. Plasticity ; Exact sciences and technology ; Lattice parameters ; Materials science ; Mechanical properties ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Metals. Metallurgy ; Microstructure ; Physics ; Refractory alloys ; Solid solution, precipitation, and dispersion hardening; aging ; Strain hardening ; Treatment of materials and its effects on microstructure and properties ; Vickers microhardness ; Yield strength
É parte de: Journal of alloys and compounds, 2011-05, Vol.509 (20), p.6043-6048
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: ► A new high-strength refractory alloy, Ta20Nb20Hf20Zr20Ti20. ► The alloy has a BCC crystal structure. The lattice parameter a = 340.4 pm. ► The alloy density and Vickers microhardness are 9.94 g/cm 3 and 3826 MPa. ► The compression yield stress σ 0.2 = 929 MPa and ductility ɛ > 50%. ► The alloy shows considerable strain hardening and homogeneous deformation. ► A model of solid-solution strengthening is proposed to explain the behavior. A new refractory alloy, Ta 20Nb 20Hf 20Zr 20Ti 20, produced by vacuum arc-melting followed by hot isostatic pressing (HIPing) at T = 1473 K and P = 207 MPa for 3 h has predominantly a single-phase body-centered cubic (BCC) structure with the lattice parameter a = 340.4 pm. The alloy density and Vickers microhardness are ρ = 9.94 g/cm 3 and H v = 3826 MPa. The alloy has high compression yield strength ( σ 0.2 = 929 MPa) and ductility ( ɛ > 50%). The alloy shows considerable strain hardening and homogeneous deformation. A simple model of solid-solution strengthening is proposed to explain the behavior.
Editor: Kidlington: Elsevier B.V
Idioma: Inglês

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Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy

Senkov, O.N. ; Scott, J.M. ; Senkova, S.V. ; Miracle, D.B. ; Woodward, C.F.

Kidlington: Elsevier B.V

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