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Superior high-temperature wear resistance of an Ir-Ta-Ni-Nb bulk metallic glass.
- Source :
- Journal of Materials Science & Technology; Sep2023, Vol. 158, p121-132, 12p
- Publication Year :
- 2023
-
Abstract
- • The high temperature wear behavior and wear mechanisms of a novel Ir-Ta-Ni-Nb bulk metallic glass were investigated. • The superior high temperature wear resistance of Ir-Ta-Ni-Nb bulk metallic glass compared to other reported metallic glass systems was demonstrated. • The oxidation behavior of Ir-Ta-Ni-Nb bulk metallic glass during high temperature wear was studied. Wear resistance is a critical consideration in engineering applications. In this study, we demonstrated an Ir-Ta-Ni-Nb bulk metallic glass (BMG) with outstanding high-temperature wear resistance and revealed its promising applications in extreme environments. The wear behavior and mechanism were systematically investigated from room temperature (RT) to 750 °C. The results show that the wear rate increases from ∼2.65 × 10<superscript>−6</superscript> mm<superscript>3</superscript> N<superscript>−1</superscript> m<superscript>−1</superscript> to ∼10.56 × 10<superscript>−6</superscript> mm<superscript>3</superscript> N<superscript>−1</superscript> m<superscript>−1</superscript> in the temperature span RT to 400 °C, following abrasive wear and flash temperature-induced oxidative wear during the friction. However, at the higher temperature of 600 °C, further heating due to frictional heat leads to a softening of the wear surface, resulting in a maximum wear rate of ∼20.99 × 10<superscript>−6</superscript> mm<superscript>3</superscript> N<superscript>−1</superscript> m<superscript>−1</superscript> under softness-driven abrasive wear as well as oxidative wear. Interestingly, the wear resistance at an even higher temperature of 750 °C shows a paradoxical improvement of ∼7.08 × 10<superscript>−6</superscript> mm<superscript>3</superscript> N<superscript>−1</superscript> m<superscript>−1</superscript>, which is attributed to the formation of an oxide layer with a thickness of several microns, avoiding violent wear of BMG. The results demonstrate the unreported outstanding high-temperature wear resistance of the Ir-Ta-Ni-Nb BMG, especially its excellent capability to resist wear at 750 °C, leading to the promising applications of BMG in the fields of aerospace, metallurgy, and nuclear industries. [ABSTRACT FROM AUTHOR]
- Subjects :
- WEAR resistance
MECHANICAL wear
METALLURGY
HIGH temperatures
EXTREME environments
Subjects
Details
- Language :
- English
- ISSN :
- 10050302
- Volume :
- 158
- Database :
- Supplemental Index
- Journal :
- Journal of Materials Science & Technology
- Publication Type :
- Periodical
- Accession number :
- 164862537
- Full Text :
- https://doi.org/10.1016/j.jmst.2023.02.040