Modelling of precipitation kinetics and age hardening of Fe-12Ni-6Mn maraging type alloy

Z. Guo; W. Sha; E. A. Wilson

doi:10.1179/026708302225001732

Modelling of precipitation kinetics and age hardening of Fe-12Ni-6Mn maraging type alloy

Z. Guo^*, W. Sha, E. A. Wilson

^*Corresponding author for this work

Research output: Contribution to journal › Article

23 Citations (Scopus)

Abstract

The precipitation hardening effect occurring in Fe-12Ni-6Mn maraging steel has been quantified in the present work. The model obtained can be applied to the entire aging period. Precipitate growth and precipitation fraction as functions of time and temperature have also been quantified. Time-temperature-precipitation diagrams with respect to precipitate size and fraction are proposed. The precipitation fraction at peak hardness has been estimated, together with the precipitate size. Results show that the precipitation process is far from complete when peak hardness is reached. At the lower temperature of 400°C, aging produces precipitates at a higher fraction and of larger size than those produced at 450 and 500°C, which explains why aging at 400°C gives a stronger hardening effect.

Original language	English
Pages (from-to)	377-382
Number of pages	6
Journal	Materials Science And Technology
Volume	18
Issue number	4
DOIs	https://doi.org/10.1179/026708302225001732
Publication status	Published - 01 Apr 2002

ASJC Scopus subject areas

Materials Science(all)
Metals and Alloys

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Guo, Z., Sha, W., & Wilson, E. A. (2002). Modelling of precipitation kinetics and age hardening of Fe-12Ni-6Mn maraging type alloy. Materials Science And Technology, 18(4), 377-382. https://doi.org/10.1179/026708302225001732

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abstract = "The precipitation hardening effect occurring in Fe-12Ni-6Mn maraging steel has been quantified in the present work. The model obtained can be applied to the entire aging period. Precipitate growth and precipitation fraction as functions of time and temperature have also been quantified. Time-temperature-precipitation diagrams with respect to precipitate size and fraction are proposed. The precipitation fraction at peak hardness has been estimated, together with the precipitate size. Results show that the precipitation process is far from complete when peak hardness is reached. At the lower temperature of 400°C, aging produces precipitates at a higher fraction and of larger size than those produced at 450 and 500°C, which explains why aging at 400°C gives a stronger hardening effect.",

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AB - The precipitation hardening effect occurring in Fe-12Ni-6Mn maraging steel has been quantified in the present work. The model obtained can be applied to the entire aging period. Precipitate growth and precipitation fraction as functions of time and temperature have also been quantified. Time-temperature-precipitation diagrams with respect to precipitate size and fraction are proposed. The precipitation fraction at peak hardness has been estimated, together with the precipitate size. Results show that the precipitation process is far from complete when peak hardness is reached. At the lower temperature of 400°C, aging produces precipitates at a higher fraction and of larger size than those produced at 450 and 500°C, which explains why aging at 400°C gives a stronger hardening effect.

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