Abstract:
The invention concerns a steel article, which consists of an alloy having a chemical composition, which contains in weight-%: 1.2 to 2.5 C; 0.8 to 2.0 Si, which partly can be replaced by aluminium, which may exist in an amount of max 1.0 %; 0.1 to 1.5 Mn; 0.5 to 1.5 Cr; 1.2 to 5.0 (V + Nb/2), however max 1.0 Nb; balance iron and impurities in normal amounts, and having a microstructure which contains 4 to 12 volume-% of MC-carbides. The steel article can be used for manufacturing of cold-work tools, particularly pilger rolls for cold rolling of tubes. The invention also relates to a method of manufacturing the article.
Abstract:
The invention consists of a gray cast iron comprising carbon, silicon, vanadium, manganese, nickel, chromium, molybdenum, copper, sulfur, phosphorous, tin and titanium, wherein: the percentage by weight of carbon is from 3.70 to 3.90%; the percentage by weight of silicon is from 1.30 to 2.10%; the percentage by weight of vanadium is from 0.10 to 0.15%; the percentage by weight of manganese is from 0.60 to 0.90%; the percentage by weight of nickel is from 0.05 to 0.50%; the percentage by weight of chromium is from 0.20 to 0.35%; the percentage by weight of molybdenum is no more than 0.10%; the percentage by weight of copper is no more than 0.35%; the percentage by weight of sulfur is less than 0.10%; the percentage by weight of phosphorous is less than 0.10%; the percentage by weight of tin is less than 0.10%; the percentage by weight of titanium is no more than 0.01%; the remainder by weight being iron.
Abstract:
Die vorliegende Erfindung betrifft ein Bauteil zum Kontaktieren von Wasserstoff, aufweisend wenigstens eine Oberfläche, die dazu vorgesehen ist, mit einer Wasserstoffatmosphäre in Kontakt zu kommen, wobei zumindest diese Oberfläche aus Stahl ausgebildet ist, dadurch gekennzeichnet, dass der Stahl eine Gefügestruktur aufweist, die Austenit und Ferrit umfasst, wobei ein austenitischer Gefügeanteil in einem Bereich von größer oder gleich 1 Gew.-% bis kleiner oder gleich 50 Gew.-%, vorliegt, und wobei ein ferritischer Gefügeanteil in einem Bereich von größer oder gleich 50 Gew.-% bis kleiner oder gleich 99 Gew.-% vorliegt.
Abstract:
Embodiments of wear resistant ferrous alloys are disclosed herein. In some embodiments, ferrous alloys can have a matrix which includes near spherical and hypereutectic borides and/or borocarbides while at the same time avoiding the formation of rod-like borides and/or borocarbides. In some embodiments, the wear resistant ferrous alloys can be used as a coating, such as a hardfacing layer, to add protection to different components.
Abstract:
The present invention relates to a metal base alloy and to methods for producing the alloy. The metal base alloy product consists of the formula Me base T a Si b Cr c Mnj V e Cf, wherein - Mebase is a metal base selected from the group consisting of Fe, Co and Ni, in an amount ranging from about 45-75 w%, - T a is an alloying material selected from the group consisting of Mo, Nb and Ta in an amount a ranging from about 5-10 w%, - Si b is a further alloying member in an amount b ranging from about 4-10 w%, - Cr c is a further alloying member in an amount c ranging from about 8-30 w%, - Mn d is a further alloying member in an amount d ranging from about 0-10 w% - V e is a further alloying member in an amount e ranging from about 0-10 w%, and - C f is a further alloying member in an amount f ranging from about 2-4 w%. The metal base alloy product contains a substantially homogenous dispersion of separate precipitated carbide particles in an amount ranging from 10-65 percentages by volume and the precipitate carbide particles have an average diameter of 0.01-5 micrometers.
Abstract translation:本发明涉及一种金属基合金及其制造方法。 金属基合金产品由式Mebase Ta Sib Crc Mnj Ve Cf组成,其中 - Mebase是选自Fe,Co和Ni的金属碱,其含量范围为约45-75%,-Ta 是选自Mo,Nb和Ta中的合金材料,其量为约5-10w%,Sib是量度为约4-10w%的另外的合金成分,-Crc 是C的范围为约8-30w%的另外的合金构件,Mn d为量范围为约0-10w%的另外的合金构件,Ve为另外的合金构件,其量为e,范围从 约0-10%(重量),和 - Cf是另外一种合金构件,其量f为约2-4%(重量)。 金属基合金产品含有10-65体积%的量的分离的沉淀碳化物颗粒的基本上均匀的分散体,沉淀碳化物颗粒的平均直径为0.01-5微米。
Abstract:
A castable and machinable alloy suitable for submersion in a molten magnesium or magnesium aluminum melt has the composition (I). The alloy is resistant to dissolution by the melt at temperatures of up to around 1800 DEG F.
Abstract:
Refining elements for refining discs for disc refiners for the manufacture of mechanical pulp, for example, board pulp, are subjected to hard abrasive wear in acid environment and at high temperature. In order to improve the wear resistance alloys with precipitated carbides are used. A service life improved in comparison with known alloys is obtained with a refining disc with the following analysis in % by weight: 2.96 C, 0.77 Si, 0.82 Mn, 24.2 Cr, 5.16 V, 0.04 Ni, 0.03 Mo, and the remainder Fe and impurities. After casting, the refining segments are hardened and annealed and assume a hardness of 57-63 HRC.
Abstract:
The present invention is directed to an iron, aluminum, chromium, carbon alloy and a method of producing the same, wherein the alloy has good room temperature ductility, excellent high temperature oxidation resistance and ductility. The alloy includes about 10 to 70 at.% iron, about 10 to 45 at.% aluminum, about 1 to 70 at.% chromium and about 0.9 to 15 at.% carbon. The invention is also directed to a material comprising a body-centered-cubic solid solution of this alloy, and a method for strengthening this material by the precipitation of body-centered-cubic particles within the solid solution, wherein the particles have substantially the same lattice parameters as the underlying solid solution. The ease of processing and excellent mechanical properties exhibited by the alloy, especially at high temperatures, allows it to be used in high temperature structural applications, such as a turbocharger component.