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.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, a three-parameter fracture criterion is applied for the development of a failure assessment diagram to maraging steels and its validity verified by considering the maraging steel fracture data of surface crack tension specimens (SCT) and pressure vessels having axial surface cracks.
Abstract: A three-parameter fracture criterion is applied for the development of a failure assessment diagram to maraging steels and its validity verified by considering the maraging steel fracture data of surface crack tension specimens (SCT) and pressure vessels having axial surface cracks. Fracture-strength/failure-pressure estimates based on this criterion are found to be in reasonably good agreement with test results.
15 citations
TL;DR: In this article, a reliable and robust automatic method by scanning electron microscopy observations coupled with energy dispersive X-ray spectroscopy was developed for the quantification of aluminum nitride (AlN) precipitation in a X23NiCoCrMoAl13-6-3 maraging steel with low nitrogen content.
15 citations
TL;DR: In this article, the state in the maraging steel 1.2799 (DIN) after the application of laser surfacing process has been analyzed using scanning electron microscope, which revealed diverse microstructure through-depth of the laser-surfaced specimens.
15 citations
TL;DR: In this paper, an 18Ni maraging steel was deformed by four passes of equal-channel angular pressing at ambient temperature, and X-ray diffraction peak profile analyses according to the modified Williamson-Hall and Warren-Averbach methods were used for determination of apparent grain size, dislocation density, and character of the prevailing dislocations, aided by supplemental transmission electron microscopy.
Abstract: Starting from a hierarchically substructured, heavily dislocated, and highly alloyed martensitic structure, an 18Ni maraging steel was deformed by four passes of equal-channel angular pressing at ambient temperature. X-ray diffraction peak profile analyses according to the modified Williamson–Hall and Warren–Averbach methods were used for determination of apparent grain size, dislocation density, and character of the prevailing dislocations, aided by supplemental transmission electron microscopy. A mean grain size of about 60 nm was determined, corresponding reasonably to the mean dislocation cell size illustrated by means of transmission electron microscopy. Furthermore, a dislocation density of 1.3 × 1016 m−2 along with an about 5:1 ratio of screw to edge type dislocations were identified. A dislocation arrangement parameter larger than unity was determined for the present deformed structure, representing a weak dipole character of the dislocation structure and weak screening action of the strain fields of multiple dislocations.
15 citations
TL;DR: A variety of techniques involving electrochemical, hydrogen permeation and acoustic emission measurements have been used in studying the stress corrosion cracking of initially smooth and pre-cracked specimens of a maraging steel in different chloride-containing solutions as discussed by the authors.
Abstract: A variety of techniques involving electrochemical, hydrogen permeation and acoustic emission measurements have been used in studying the stress corrosion cracking of initially smooth and pre-cracked specimens of a maraging steel in different chloride-containing solutions. In solutions having pH's in excess of 2, cracking of smooth specimens occurred in two regimes of potential separated by a region in which cracking did not occur, although cracking was induced in this latter region if the specimens were precracked or pre-pitted, or pitting was facilitated by non-metallic inclusions emerging at the test specimen surfaces by stressing the specimens transversely to the rolling direction. It is considered that such geometrical discontinuities are more important in facilitating cracking by fostering local changes in solution chemistry than because of their effect in terms of stress intensification. However, the evidence, viewed in its entirety, does not support the hypothesis that failure invariably r...
15 citations