Optimization of Ageing Parameters of a Low Nickel Maraging Steel

Abstract:

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In the present work the age hardening parameters of a 14Ni (200) maraging steel are studied in order to optimize mechanical properties of the steel. The initial characterization of the as received solution annealed steel has been carried out by optical and scanning electron microscopy (LOM and SEM), and hardness measurements. To identify the structural changes during ageing, differential scanning calorimetry (DSC) tests were performed. Different time-temperature combinations were considered for the precipitation hardening treatment of as-quenched material samples. After hardness measurements, three of these treatments were selected for an in depth study. The obtained microstructure at the maximum hardness peaks then analysed (LOM, SEM and TEM) and mechanical behaviour (strength, toughness and wear resistance) was studied for the final selection of the age hardening conditions.

Info:

Periodical:

Materials Science Forum (Volumes 636-637)

Edited by:

Luís Guerra ROSA and Fernanda MARGARIDO

Pages:

471-477

DOI:

10.4028/www.scientific.net/MSF.636-637.471

Citation:

M. Cabeza et al., "Optimization of Ageing Parameters of a Low Nickel Maraging Steel", Materials Science Forum, Vols. 636-637, pp. 471-477, 2010

Online since:

January 2010

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Price:

$35.00

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