High-throughput nitride and interstitial nitrogen analysis in ferritic/martensitic steels via time-of-flight secondary ion mass spectrometry

Rietema, Connor J.; Walker, Michael; Jacobs, Taylor R.; Clarke, Amy J.; Clarke, Kester D.

doi:10.1016/j.matchar.2021.111357

Cited by 6 publications

(1 citation statement)

References 27 publications

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“…In the past decades, reduced activation ferritic/martensitic (RAFM) steel has been widely selected as primary structural materials in the nuclear industry, including test blanket modules (TBMs), nuclear power cladding, and cores, owing to its good advantages of low activation, good radiation resistance, and outstanding mechanical and thermophysical properties [1][2][3][4]. The service environment of RAFM steel structure that are used in the nuclear industry usually needs to withstand high thermal load, and it needs to match the plasma configuration [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Selective Laser Melted Reduced Activation Ferritic/Martensitic Steel

Yuan

Xiao²,

Líu³

et al. 2022

Metals

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Cube and tensile samples of reduced activation ferritic/martensitic steel were formed at different laser powers and scanning velocities using a selective laser melting process; the microstructural characteristics and tensile properties of the cube and tensile samples were investigated in this study. The experimental results showed that the SLMed CLF-1 samples that formed with selected laser melting were near-fully dense, and the relative density of the SLMed CLF-1 samples exceeded 99%. Meanwhile, there were numerous nano-sized spherical and needle-like precipitate dispersions distributed in the grains and boundary of the grains, and the precipitates were mainly composed of M23C6 carbide and MX carbide. The microstructure was composed of columnar grains and equiaxed grains arranged in a sequence, and the smallest average size of the grains was 15 ± 2.1 µm when measured at 320 W of power and 800 mm/s scanning velocity. In addition, the sample at 320 W of power and 800 mm/s scanning velocity exhibited higher yield strength (875 ± 6.0 MPa) and higher elongation (25.6 ± 0.8%) than that of the sample at 200 W of power, 800 mm/s scanning velocity, yield strength of 715 ± 1.5 MPa, and elongation of 22.6 ± 1.2%.

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