Effects of austenite reversion during overageing on the mechanical properties of 18 Ni (350) maraging steel

By U. Viswanathan, G. Dey, V. Sethumadhavan. 2005

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Plastic anisotropy of additively manufactured maraging steel: Influence of the build orientation and heat treatments (2019, background): “The chemical arrangement of the existing precipitate phase depends on the alloy composition, and the period within the precipitation hardening process [42, 68].”
Aging Behaviour and Mechanical Performance of 18-Ni 300 Steel Processed by Selective Laser Melting (2016, background): “Even though it is stated that martensite can form even after moderate cooling rates, in published research works either water cooling [2,4] or air cooling [5,8]”
A novel ultra-high strength maraging steel with balanced ductility and creep resistance achieved by nanoscale β-NiAl and Laves phase precipitates (2018, background): “temperature capability of maraging steels, as the martensite enriched with Ni is not thermodynamically stable at elevated temperatures and a reverse transformation to the equilibrium austenite phase can occur after prolonged exposure to high temperatures [6, 7].”
Predicting microstructure and strength of maraging steels: Elemental optimisation (2016, background): “However, small variations in dlath have been observed in a variety of maraging steels with different Ni and Mn content, even for tempered conditions [14,20,25,26,39]; this behaviour can be due to the relatively low lattice distortion and high solubility of substitutional atoms in Fe with respect to ”