Atomic resolution imaging of precipitate transformation from cubic TaN to tetragonal CrTaN

Publication: Research - peer-reviewJournal article – Annual report year: 2012

View graph of relations

In 9–12% Cr creep-resistant steels Cr(V,Nb,Ta)N Z-phase is known to replace metastable (V,Nb,Ta)N MN precipitates at high temperatures. The precipitation process of Z-phase does not follow the classical nucleation theory, where dissolving MN particles provide constituents for Z-phase nucleation in the matrix. Using atomic resolution transmission electron microscopy, the current work demonstrates that metastable cubic TaN precipitates in a complex steel gradually transform compositionally and crystallographically into stable tetragonal CrTaN precipitates under the influence of Cr indiffusion from the steel matrix.
Original languageEnglish
JournalScripta Materialia
Publication date2012
Volume66
Issue5
Pages261-264
ISSN1359-6462
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 6

Keywords

  • Heat-resistant steels, Nitrides, High-resolution electron microscopy (HREM), Crystal structure, Phase transformations
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

ID: 6379161