Topic
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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TL;DR: In this paper, the corrosion behavior of Maraging steel has been examined in sodium chloride solutions with different concentrations from 0.1 M to 2 M. The corrosion resistance is directly proportional to the Mo and Ti content in the steel.
Abstract: The corrosion behavior of Maraging steel has been studied by using different techniques, including open circuit potential and polarization measurements in addition to microstructure examination such as optical microscopy and XRD (X-Ray Diffraction) investigation. The corrosion behavior of Maraging steel has been examined in sodium chloride solutions with different concentrations from 0.1 M to 2 M. It was found that the corrosion resistance of Maraging steel is inversely proportional with the concentration of sodium chloride solution. The corrosion resistance is directly proportional to the Mo and Ti content in the Maraging steel. Heat treatment of the Maraging steel improved its mechanical properties with no effect on the corrosion behavior as the precipitation of inter-metallic compounds leading to some galvanic action. However, sample IV having lower Mo content than sample V showed after heat treatment an improvement in the corrosion resistance.
10 citations
22 Apr 2020
TL;DR: In this paper, a coupled model of titanium nitride (TiN) inclusion precipitation and vacuum remelting has been set-up to study the inclusion cleanliness of the ingot.
Abstract: During the processing of maraging steels, Titanium easily combines with Nitrogen to form nitride inclusions, known to be deleterious for fatigue properties of the alloy. According to thermodynamic calculations, the precipitation occurs during solidification of the vacuum arc remelted (VAR) ingot. A coupled model of titanium nitride (TiN) inclusion precipitation and vacuum remelting has been set-up to study the inclusion cleanliness of the ingot. The nitrogen content, nuclei numeral density and solidification time appear as the key factors which control the inclusion size.
10 citations
TL;DR: In this paper, a Stellite 21 alloy was printed on a 350 maraging steel via laser cladding and the coating microstructure and tribological performance were characterized in as printed conditions and after heat treatment.
10 citations
Patent•
18 Nov 2003
TL;DR: In this article, the authors proposed a method for efficiently and economically producing maraging steel not inferior to the conventional method even if scrap made of maraging steels is used as a melting raw material.
Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently and economically producing maraging steel not inferior to maraging steel produced by the conventional method even if scrap made of maraging steel is used as a melting raw material. SOLUTION: In the method for producing maraging steel using a scrap material, a melting raw material of maraging steel in which a part or the whole is composed of a scrap material is melted by an arc type electric furnace in an oxidizing atmosphere, so as to be molten steel, the molten steel is received by a vacuum treatment device, vacuum refining is performed in the vacuum treatment device, also, componential regulation is performed in the process of the vacuum refining, before the vacuum refining or after the vacuum refining, and the same is made into a maraging steel ingot having a nitrogen content of ≤25 ppm. Preferably, the vacuum treatment device is a vacuum induction heating furnace, and more preferably, oxidative refining is performed after the raw material is melted by the arc type electric furnace, so as to be the molten steel. COPYRIGHT: (C)2006,JPO&NCIPI
10 citations
TL;DR: In this paper, an 18Ni (300-grade) maraging steel at room temperature in dry and humid argon environments (atmospheric pressure) was examined to examine the effect of moisture on the rate of fatigue-crack propagation and on the fracture path through the microstructure.
10 citations