Synthesis and phase separation of (Ti,Zr)C
2014 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 66, 209-218 p.Article in journal (Refereed) Published
Synthesis and phase separation of (Ti,Zr)C were investigated in the present work. The (Ti,Zr)C phase was synthesized at 2200 C and subsequently aged at 1300 C for different times. The microstructure was investigated using X-ray diffraction and electron microscopy, and supplemented by first-principles calculations. The (Ti,Zr)C phase separates into a lamellar nanostructure with alternating Ti- and Zr-rich face-centered cubic domains as well as non-stoichiometric TiC and ZrC. The lamellar structure is a consequence of phase separation within the miscibility gap that is directionally constrained by high coherency stresses, as indicated by the first-principles calculations. Moreover, the increased hardness due to the phase separation suggests that the mixed carbide could be used as a strengthening constituent in, for example, cemented carbides.
Place, publisher, year, edition, pages
2014. Vol. 66, 209-218 p.
Carbides, Electron microscopy, First-principles calculations, Phase separation, X-ray diffraction
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-133937DOI: 10.1016/j.actamat.2013.11.074ISI: 000331422600021ScopusID: 2-s2.0-84891772946OAI: oai:DiVA.org:kth-133937DiVA: diva2:663965
QC 20140203. Updated from submitted to published.2013-11-132013-11-132014-03-21Bibliographically approved