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Surface hardening of TiZrNbHfTa high entropy alloy via oxidation by Daniel Dickes; Beyza Öztürk; Felix Baier; Pascal Berger; Easo P. George; Rainer Völkl; Mathias C. Galetz; Uwe Glatzel is a Materials Science article available to read on EtoBox.
What is Surface hardening of TiZrNbHfTa high entropy alloy via oxidation about?
We investigate the oxidation of TiZrNbHfTa high entropy alloy between 550 °C and 650 °C as a surface hardening method. Coarse-grained specimens with grain boundaries perpendicular to the surface exhibit catastrophic oxidation, while ultrafine-grained, cold-rolled specimens show a continuous mass gain and the formation of an adherent, μm-sized, vitreous oxide layer. Underneath, TiZrNbHfTa decomposes into a bcc- and an hcp-phase, while selective internal oxidation of hafnium and zirconium occurs upon oxygen inward diffusion. Oxygen concentration- and microhardness-depth profiles confirm an increase in oxygen concentration and hardness at the surface, raising the initial hardness by four times to 1522 ± 64 HV0.5.
Who reads Surface hardening of TiZrNbHfTa high entropy alloy via oxidation?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Daniel Dickes; Beyza Öztürk; Felix Baier; Pascal Berger; Easo P. George; Rainer Völkl; Mathias C. Galetz; Uwe Glatzel
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Materials Science (Physical Sciences)