Characterisation of L21-ordered Ni2TiAl precipitates in [Formula presented] maraging steels

Feng Qian; Joanne Sharp; W. Mark Rainforth

doi:10.1016/j.matchar.2016.05.026

Characterisation of L2₁-ordered Ni₂TiAl precipitates in [Formula presented] maraging steels

Feng Qian
, Joanne Sharp
, W. Mark Rainforth^*

^*Corresponding author for this work

University of Sheffield

Research output: Contribution to journal › Article › peer-review

20 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 language	English
Pages (from-to)	199-205
Number of pages	7
Journal	Materials Characterization
Volume	118
DOIs	https://doi.org/10.1016/j.matchar.2016.05.026
Publication status	Published - 2016
Externally published	Yes

Keywords

Coarsening behaviour
Maraging steels
NiTiAl
Precipitation hardening
Transmission electron microscopy

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10.1016/j.matchar.2016.05.026

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title = "Characterisation of L21-ordered Ni2TiAl precipitates in [Formula presented] maraging steels",

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.",

keywords = "Coarsening behaviour, Maraging steels, NiTiAl, Precipitation hardening, Transmission electron microscopy",

author = "Feng Qian and Joanne Sharp and Rainforth, \{W. Mark\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Inc.",

year = "2016",

doi = "10.1016/j.matchar.2016.05.026",

language = "English",

volume = "118",

pages = "199--205",

journal = "Materials Characterization",

issn = "1044-5803",

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TY - JOUR

T1 - Characterisation of L21-ordered Ni2TiAl precipitates in [Formula presented] maraging steels

AU - Qian, Feng

AU - Sharp, Joanne

AU - Rainforth, W. Mark

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Coarsening behaviour

KW - Maraging steels

KW - NiTiAl

KW - Precipitation hardening

KW - Transmission electron microscopy

UR - https://www.scopus.com/pages/publications/84979515580

U2 - 10.1016/j.matchar.2016.05.026

DO - 10.1016/j.matchar.2016.05.026

M3 - Article

AN - SCOPUS:84979515580

SN - 1044-5803

VL - 118

SP - 199

EP - 205

JO - Materials Characterization

JF - Materials Characterization

ER -

Characterisation of L2₁-ordered Ni₂TiAl precipitates in [Formula presented] maraging steels

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Keywords

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