期刊
MATERIALS CHARACTERIZATION
卷 118, 期 -, 页码 199-205出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2016.05.026
关键词
Maraging steels; Ni2TiAl; Precipitation hardening; Coarsening behaviour; Transmission electron microscopy
类别
资金
- China Scholarship Council (CSC)
- Department for Business, Innovation Skills (BIS)
- EPSRC [EP/L025213/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L025213/1] Funding Source: researchfish
The precipitates formed in a new series of Fe-Mn maraging steels when aged at 500 degrees C were identified as the L2(1)-ordered Ni2TiAl phase. The precipitate formed a coherent-coplanar microstructure analogously to gamma/gamma' Ni-based superalloys and maintained a high number density and homogeneous dispersion within alpha'-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. (C) 2016 Elsevier Inc. All rights reserved.
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