Characterisation of L21-ordered Ni2TiAl precipitates in Fe-Mn maraging steels

Feng Qian, Joanne Sharp, W. Mark Rainforth

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The precipitates formed in a new series of [Formula presented] maraging steels when aged at 500 °C were identified as the L21-ordered Ni2TiAl phase. The precipitate formed a coherent-coplanar microstructure analogously to γ/γ' Ni-based superalloys and maintained a high number density and homogeneous dispersion within α′-martensite matrix even after aging for 10,080 min. An increase in the Mn content of the alloy led to faster precipitation kinetics and thus rapid hardening kinetics.

Original languageEnglish
Pages (from-to)199-205
Number of pages7
JournalMaterials Characterization
Volume118
Early online date1 Jun 2016
DOIs
Publication statusPublished - 1 Aug 2016
Externally publishedYes

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