Accelerated oxidation in ductile refractory high-entropy alloys

Saad Sheikh, Muhammad Kurnia Bijaksana, Amir Motallebzadeh, Samrand Shafeie, Adrianna Lozinko, Lu Gan, Te Kang Tsao, Uta Klement, Demircan Canadinc, Hideyuki Murakami, Sheng Guo

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    Refractory high-entropy alloys (RHEAs) are promising candidates for new-generation high temperature materials, but they generally suffer from room temperature brittleness and unsatisfactory high-temperature oxidation resistance. There currently lack efforts to address to these two critical issues for RHEAs at the same time. In this work, the high temperature oxidation resistance of a previously identified ductile Hf0.5Nb0.5Ta0.5Ti1.5Zr RHEA is studied. An accelerated oxidation or more specifically, pesting, in the temperature range of 600–1000 °C is observed for the target RHEA, where the oxidation leads the material to catastrophically disintegrate into powders. The pesting mechanism is studied here, and is attributed to the failure in forming protective oxide scales accompanied by the accelerated internal oxidation. The simultaneous removal of zirconium and hafnium can eliminate the pesting phenomenon in the alloy. It is believed that pesting can also occur to other equiatomic and non-equiatomic quinary Hf-Nb-Ta-Ti-Zr or quaternary Hf-Nb-Ti-Zr and Hf-Ta-Ti-Zr RHEAs, where all currently available ductile RHEAs are identified. Therefore, the results from this work will provide crucial perspectives to the further development of RHEAs as novel high-temperature materials, with balanced room-temperature ductility and high-temperature oxidation resistance.

    Original languageEnglish
    Pages (from-to)58-66
    Number of pages9
    JournalIntermetallics
    Volume97
    DOIs
    Publication statusPublished - 2018 Jun 1

    Fingerprint

    Refractory materials
    Entropy
    Oxidation
    Thermooxidation
    Oxidation resistance
    Hafnium
    Temperature
    Internal oxidation
    Brittleness
    Zirconium
    Powders
    Oxides
    Ductility

    Keywords

    • High temperature materials
    • Oxidation resistance
    • Pesting
    • Refractory high-entropy alloys

    ASJC Scopus subject areas

    • Chemistry(all)
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

    Cite this

    Sheikh, S., Bijaksana, M. K., Motallebzadeh, A., Shafeie, S., Lozinko, A., Gan, L., ... Guo, S. (2018). Accelerated oxidation in ductile refractory high-entropy alloys. Intermetallics, 97, 58-66. https://doi.org/10.1016/j.intermet.2018.04.001

    Accelerated oxidation in ductile refractory high-entropy alloys. / Sheikh, Saad; Bijaksana, Muhammad Kurnia; Motallebzadeh, Amir; Shafeie, Samrand; Lozinko, Adrianna; Gan, Lu; Tsao, Te Kang; Klement, Uta; Canadinc, Demircan; Murakami, Hideyuki; Guo, Sheng.

    In: Intermetallics, Vol. 97, 01.06.2018, p. 58-66.

    Research output: Contribution to journalArticle

    Sheikh, S, Bijaksana, MK, Motallebzadeh, A, Shafeie, S, Lozinko, A, Gan, L, Tsao, TK, Klement, U, Canadinc, D, Murakami, H & Guo, S 2018, 'Accelerated oxidation in ductile refractory high-entropy alloys', Intermetallics, vol. 97, pp. 58-66. https://doi.org/10.1016/j.intermet.2018.04.001
    Sheikh S, Bijaksana MK, Motallebzadeh A, Shafeie S, Lozinko A, Gan L et al. Accelerated oxidation in ductile refractory high-entropy alloys. Intermetallics. 2018 Jun 1;97:58-66. https://doi.org/10.1016/j.intermet.2018.04.001
    Sheikh, Saad ; Bijaksana, Muhammad Kurnia ; Motallebzadeh, Amir ; Shafeie, Samrand ; Lozinko, Adrianna ; Gan, Lu ; Tsao, Te Kang ; Klement, Uta ; Canadinc, Demircan ; Murakami, Hideyuki ; Guo, Sheng. / Accelerated oxidation in ductile refractory high-entropy alloys. In: Intermetallics. 2018 ; Vol. 97. pp. 58-66.
    @article{34bbfabbe4754e69a9357b3ce745bac5,
    title = "Accelerated oxidation in ductile refractory high-entropy alloys",
    abstract = "Refractory high-entropy alloys (RHEAs) are promising candidates for new-generation high temperature materials, but they generally suffer from room temperature brittleness and unsatisfactory high-temperature oxidation resistance. There currently lack efforts to address to these two critical issues for RHEAs at the same time. In this work, the high temperature oxidation resistance of a previously identified ductile Hf0.5Nb0.5Ta0.5Ti1.5Zr RHEA is studied. An accelerated oxidation or more specifically, pesting, in the temperature range of 600–1000 °C is observed for the target RHEA, where the oxidation leads the material to catastrophically disintegrate into powders. The pesting mechanism is studied here, and is attributed to the failure in forming protective oxide scales accompanied by the accelerated internal oxidation. The simultaneous removal of zirconium and hafnium can eliminate the pesting phenomenon in the alloy. It is believed that pesting can also occur to other equiatomic and non-equiatomic quinary Hf-Nb-Ta-Ti-Zr or quaternary Hf-Nb-Ti-Zr and Hf-Ta-Ti-Zr RHEAs, where all currently available ductile RHEAs are identified. Therefore, the results from this work will provide crucial perspectives to the further development of RHEAs as novel high-temperature materials, with balanced room-temperature ductility and high-temperature oxidation resistance.",
    keywords = "High temperature materials, Oxidation resistance, Pesting, Refractory high-entropy alloys",
    author = "Saad Sheikh and Bijaksana, {Muhammad Kurnia} and Amir Motallebzadeh and Samrand Shafeie and Adrianna Lozinko and Lu Gan and Tsao, {Te Kang} and Uta Klement and Demircan Canadinc and Hideyuki Murakami and Sheng Guo",
    year = "2018",
    month = "6",
    day = "1",
    doi = "10.1016/j.intermet.2018.04.001",
    language = "English",
    volume = "97",
    pages = "58--66",
    journal = "Intermetallics",
    issn = "0966-9795",
    publisher = "Elsevier Limited",

    }

    TY - JOUR

    T1 - Accelerated oxidation in ductile refractory high-entropy alloys

    AU - Sheikh, Saad

    AU - Bijaksana, Muhammad Kurnia

    AU - Motallebzadeh, Amir

    AU - Shafeie, Samrand

    AU - Lozinko, Adrianna

    AU - Gan, Lu

    AU - Tsao, Te Kang

    AU - Klement, Uta

    AU - Canadinc, Demircan

    AU - Murakami, Hideyuki

    AU - Guo, Sheng

    PY - 2018/6/1

    Y1 - 2018/6/1

    N2 - Refractory high-entropy alloys (RHEAs) are promising candidates for new-generation high temperature materials, but they generally suffer from room temperature brittleness and unsatisfactory high-temperature oxidation resistance. There currently lack efforts to address to these two critical issues for RHEAs at the same time. In this work, the high temperature oxidation resistance of a previously identified ductile Hf0.5Nb0.5Ta0.5Ti1.5Zr RHEA is studied. An accelerated oxidation or more specifically, pesting, in the temperature range of 600–1000 °C is observed for the target RHEA, where the oxidation leads the material to catastrophically disintegrate into powders. The pesting mechanism is studied here, and is attributed to the failure in forming protective oxide scales accompanied by the accelerated internal oxidation. The simultaneous removal of zirconium and hafnium can eliminate the pesting phenomenon in the alloy. It is believed that pesting can also occur to other equiatomic and non-equiatomic quinary Hf-Nb-Ta-Ti-Zr or quaternary Hf-Nb-Ti-Zr and Hf-Ta-Ti-Zr RHEAs, where all currently available ductile RHEAs are identified. Therefore, the results from this work will provide crucial perspectives to the further development of RHEAs as novel high-temperature materials, with balanced room-temperature ductility and high-temperature oxidation resistance.

    AB - Refractory high-entropy alloys (RHEAs) are promising candidates for new-generation high temperature materials, but they generally suffer from room temperature brittleness and unsatisfactory high-temperature oxidation resistance. There currently lack efforts to address to these two critical issues for RHEAs at the same time. In this work, the high temperature oxidation resistance of a previously identified ductile Hf0.5Nb0.5Ta0.5Ti1.5Zr RHEA is studied. An accelerated oxidation or more specifically, pesting, in the temperature range of 600–1000 °C is observed for the target RHEA, where the oxidation leads the material to catastrophically disintegrate into powders. The pesting mechanism is studied here, and is attributed to the failure in forming protective oxide scales accompanied by the accelerated internal oxidation. The simultaneous removal of zirconium and hafnium can eliminate the pesting phenomenon in the alloy. It is believed that pesting can also occur to other equiatomic and non-equiatomic quinary Hf-Nb-Ta-Ti-Zr or quaternary Hf-Nb-Ti-Zr and Hf-Ta-Ti-Zr RHEAs, where all currently available ductile RHEAs are identified. Therefore, the results from this work will provide crucial perspectives to the further development of RHEAs as novel high-temperature materials, with balanced room-temperature ductility and high-temperature oxidation resistance.

    KW - High temperature materials

    KW - Oxidation resistance

    KW - Pesting

    KW - Refractory high-entropy alloys

    UR - http://www.scopus.com/inward/record.url?scp=85048588474&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85048588474&partnerID=8YFLogxK

    U2 - 10.1016/j.intermet.2018.04.001

    DO - 10.1016/j.intermet.2018.04.001

    M3 - Article

    AN - SCOPUS:85048588474

    VL - 97

    SP - 58

    EP - 66

    JO - Intermetallics

    JF - Intermetallics

    SN - 0966-9795

    ER -