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Maraging steel

About: Maraging steel is a research topic. Over the lifetime, 1728 publications have been published within this topic receiving 19886 citations. The topic is also known as: martensitic ageing steel.


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Journal ArticleDOI
15 Oct 2021-Wear
TL;DR: In this paper, the wear performance of 18Ni-300 steel, fabricated via selective laser melting, with respect to the building direction was investigated with various sliding velocities, including high sliding speeds up to 1.

11 citations

Journal ArticleDOI
TL;DR: In this article, the surface phase compositions of nanocrystallized 18Ni maraging steel were analyzed using X-ray diffractometer and transmission electron microscopy, and the grain shape and size, and grain boundaries in the subsurface layers of the samples were characterized.

11 citations

Journal ArticleDOI
TL;DR: In this paper, an experimental design was based on a 23-full factorial design used to determine the optimum processing windows, using a constant powder feed rate and aging heat treatments on structural and mechanical properties (i.e., macrohardness).
Abstract: Maraging steels (MS) are widely used materials for heavy-duty applications and are considered an alternative to carbon hardened steels when high strength and good toughness is needed. Their processing through additive manufacturing (AM) technologies offers additional high-value opportunities, for instance, in the rapid prototyping or fabrication of tooling and inserts, and in the repair of molds and dies as well as in maintenance applications. This work studied the maraging 300 steel (18Ni-300) deposited by the laser cladding (LC) process. The experimental design was based on a 23-full factorial design used to determine the optimum processing windows, using a constant powder feed rate. After that, samples with optimal process parameters were manufactured to determine the influence of deposition strategy and aging heat treatments on structural and mechanical properties (i.e., macrohardness). Results indicated the influence of crucial process parameters (i.e., laser power, velocity, and laser spot size) on the track’s geometrical characteristics. The processing windows also revealed that particular combinations of these parameters’ values produced LC tracks with the minimum dilution with either maximum height or maximum width, which is desirable for manufacturing and repair applications. Although the as-built samples did not show significant differences in their hardness, they showed a considerable difference in their austenitic phase content due to a combined effect between the sample’s geometry and deposition pattern. Aging heat treatments between 460 and 490 °C (4–8 h) resulted in the maximum hardness value (~55HCR) with an austenite content below 6 wt% calculated by Rietveld analysis. Finally, SEM and EDS analysis were carried out; it was found that the austenite located in the boundaries of the solidification structures is rich in Mo, Ti, and Ni for the samples in the as-built condition, while for the samples with aging, the highest content of austenite rich in Ni and Mo was obtained with aging at 530 °C.

11 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023101
2022177
2021119
202089
201993
201874