Topic
Alloy
About: Alloy is a research topic. Over the lifetime, 171884 publications have been published within this topic receiving 1719420 citations. The topic is also known as: alloys.
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TL;DR: In this paper, the effects of Cr (5 or 8 ǫ at.%) and Ta (6 or 8 ) in the microstructures of as-cast and heat-treated Nb-24Ti-18Si-5Al in situ composites have been studied.
161 citations
TL;DR: In this paper, the authors simulated metal dusting in CO-H2H2O atmospheres at 650°C and showed that the unstable carbide M3C is an intermediate, which decomposes according to M 3C = 3M + C, the metal particles serving as catalysts for further coke deposition.
161 citations
TL;DR: In this article, high-entropy alloy and nitride coatings (TiHfZrVNb) were prepared by the cathodic-arc-vapor-deposition method under various deposition conditions.
161 citations
01 Oct 1988-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the martensite formed in this alloy has been found to be of a lath morphology having a dislocated substructure and the reversion process has been accompanied by a sharp decrease in the hardness of the alloy.
Abstract: Microstructures developed in commercial 17-4 PH precipitation-hardened stainless steel after different heat treatments have been studied. The martensite formed in this alloy has been found to be of a lath morphology having a dislocated substructure. Transmission electron microscopy studies have revealed the formation of a copper-rich phase in the samples aged at temperatures below 550°C. However, at higher temperatures, in addition to the formation of these precipitates, austenite phase reversion has been noticed, primarily at the lath boundaries. The reversion process has been found to be accompanied by a sharp decrease in the hardness of the alloy. The morphologies of the transformation products and the crystallography of the transformation have been discussed.
161 citations
TL;DR: The magnetic properties of the Heusler alloys have been investigated by means of X-rays in this article, and the results showed that the mixture of face-centred and body-centered cubic structures was the more magnetic.
Abstract: Beginning in the year 1898 Heusler discovered as a series of ferromagnetic alloys, the most important containing copper, manganese, and aluminium. They are characterized by remarkable magnetic properties, because although composed only of paramagnetic or diamagnetic elements, they become ferro-magnetic after suitable heat treatment. Various explanations of this property have been advanced, but it was usually considered to be due to the formation of a series of solid solutions of the type (CuMn)3Al, in which the proportions of copper and manganese may be varied within fairly wide limits. The Heusler alloys have been repeatedly investigated by means of X-rays. Young, using molybdenum radiation examined alloys of two different compositions. He found that one was face-centred cubic, while the other was a mixture of face-centred and body-centred cubic structures. The mixed alloy was the more magnetic.
161 citations