Abstract
Ni–Cr–Mo alloys mostly form precipitates of the Ni2(Cr,Mo) phase. A D022 phase with Ni73.2Cr7.4Mo9.0W1.8Ti8.6 composition has been stabilized in a Ni–Cr–Mo alloy by the addition of W and Ti in a judicious manner that retards the precipitation of the Ni2(Cr,Mo) phase. The D022 phase remains thermally stable up to 800 °C. The fast age-hardening response of the D022 phase opens up the possibility of a new series of high strength age-hardenable Ni–Cr–Mo alloys.
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Acknowledgments
The authors acknowledge Associate Director, Materials Group and Head, Mechanical Metallurgy Division for their interest and continuous support in the present work. The authors are also grateful to the BRNS-IITM collaboration for carrying out atom probe tomography experiments at its National Facility for Atom Probe Tomography (NFAPT).
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Manuscript submitted March 23, 2021, accepted July 16, 2021.
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Verma, A., Singh, J.B. Stabilization of a D022 Phase in Ni–Cr–Mo–W–Ti Alloys. Metall Mater Trans A 52, 4317–4323 (2021). https://doi.org/10.1007/s11661-021-06404-4
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DOI: https://doi.org/10.1007/s11661-021-06404-4