High temperature deformation of polycrystalline C40 Mo(Si,Al)2Show others and affiliations
2022 (English)In: Materials Science & Engineering: A, ISSN 0921-5093, E-ISSN 1873-4936, Vol. 849, article id 143387Article in journal (Refereed) Published
Abstract [en]
Polycrystalline Mo(Si,Al) with C40 crystal structure was deformed in compression with a strain rate of 10−4 s−1 at 1300 °C. The specimens were deformed to a strain of 10%–15% and showed maximum stresses around 150 MPa prior to pronounced softening. No crack formation or significant increase in porosity could be observed. Post-test microstructure analysis revealed that the material was inhomogeneously deformed on both inter- and intragranular levels. Dynamic recrystallization occurred alongside low angle grain boundary formation in highly deformed grains. Furthermore, complex intragranular deformation fields suggest that slip systems other than ⟨2̄1̄10⟩ [0001] may be active during deformation.
Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 849, article id 143387
Keywords [en]
Mo(Si, Al)2, Ceramics, High temperature compression, Electron backscatter diffraction, Dynamic recrystallization, Low angle grain boundaries
National Category
Environmental Sciences Bioenergy Physical Chemistry
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-91186DOI: 10.1016/j.msea.2022.143387ISI: 000826770000001Scopus ID: 2-s2.0-85132913136OAI: oai:DiVA.org:ltu-91186DiVA, id: diva2:1667232
Funder
Swedish Foundation for Strategic Research
Note
Validerad;2022;Nivå 2;2022-06-30 (joosat);
Funder: Kanthal AB
2022-06-102022-06-102022-07-29Bibliographically approved