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Phase transformation in a nanostructured M300 maraging steel obtained by SPS of mechanically alloyed powders

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Abstract

A Maraging M300 steel was produced by ball milling of elemental powders and Spark Plasma Sintering (SPS) consolidation at two different temperatures (950 and 1050 °C). Two types of nanostructured steels have been obtained. Thermal behaviors of these steels were investigated by means of Differential Scanning Calorimetry (DSC) and Dilatometry. Data provided by the two different techniques were seen to be in good agreement. A difference between the behaviors of the steel sintered at 950 °C and that sintered at 1050 °C was observed, due to the material sintered at lower temperature being more reactive to the intermetallics precipitation and austenite reversion on heating. On cooling, it shows a single martensite start temperature (Ms), whereas the steel sintered at 1050 °C shows a double peak for Ms.

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Authors and Affiliations

  1. Department of Materials Engineering and Industrial Technologies, University of Trento, via Mesiano 77, 38050, Trento, Italy

    C. Menapace, I. Lonardelli & A. Molinari

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  1. C. Menapace
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  2. I. Lonardelli
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  3. A. Molinari
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Correspondence to C. Menapace.

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Menapace, C., Lonardelli, I. & Molinari, A. Phase transformation in a nanostructured M300 maraging steel obtained by SPS of mechanically alloyed powders. J Therm Anal Calorim 101, 815–821 (2010). https://doi.org/10.1007/s10973-010-0745-5

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  • DOI: https://doi.org/10.1007/s10973-010-0745-5

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