Characterization of Nanoscale Precipitates in 10Ni3MnCuAl Steel by Three Dimensional Atom Probe Tomography

Abstract:

The precipitation hardened steel 10Ni3MnCuAl after solution heat treatment and aging at 510 °C is investigated by three dimensional atom probe (3DAP). The results show that the Ni, Mn, Al and Cu distribute uniformly in the steel after solution heat treatment, but they form multicomponent precipitates after aging and cause the hardness increase. The concentration ratio between Ni and Al in multicomponent precipitates is roughly 1, while the concentration of Fe decreases, and the distance between concentration peak of Cu and those of Ni and Al becomes wider with the aging time, which is related to the precipitation character of Cu in α-ferrite.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 2135-2139
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.2135
• Online since: January 2013
• Authors: Yi Luo
• Keywords: 3DAP, Aging Hardened Steel, Precipitate

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