摘要:
Provided is bearing steel having excellent fatigue life by minimizing segregation during casting of the bearing steel and reducing the generation of large carbides in a segregation band. According to the present invention, high-carbon chromium bearing steel including 0.5 wt% to 1.2 wt% of carbon (C), 0.15 wt% to 2.0 wt% of silicon (Si), 0.05 wt% to 0.45 wt% of manganese (Mn), 0.025 wt% or less (excluding 0 wt%) of phosphorus (P), 0.025 wt% or less (excluding 0 wt%) of sulfur (S), 0.1 wt% to 1.6 wt% of chromium (Cr), 0.01 wt% to 0.3 wt% of Ce, and iron (Fe) as well as other unavoidable impurities as a remainder and a method of manufacturing the same are provided.
摘要:
The present disclosure is directed at alloys and method for layer-by-layer deposition of metallic alloys on a substrate. The resulting deposition provides for relatively high hardness metallic parts with associated wear resistance. Applications for the metallic parts include pumps, valves and/or bearings.
摘要:
Methods are provided for producing alloy forms from alloys containing one or more extremely reactive elements and for fabricating a component therefrom. The fabricating method comprises substantially removing a reactive gas from the fabrication environment. An alloy form of the alloy is formed. The alloy form is formed by melting the alloy or by melting one or more base elements of the alloy to produce a molten liquid and introducing the one or more extremely reactive elements into the molten liquid. The molten alloy is shaped into the alloy form. The component is formed from the alloy form. If the one or more extremely reactive elements are introduced into the molten liquid, such introduction occurs just prior to the shaping step.
摘要:
An aluminium-copper alloy comprising substantially insoluble particles which occupy the interdendritic regions of the alloy, provided with free titanium in quantity sufficient to result in a refinement of the grain structure in the cast alloy.
摘要:
Provided are an alloy production method that may easily distribute a compound in a matrix of an alloy while maintaining the quality of a molten metal, and an alloy produced by the same. In accordance with an exemplary embodiment, the method includes forming a molten metal in which a mother alloy including at least one kind of first compound and a casting metal are melted, and casting the molten metal, wherein the mother alloy is a magnesium mother alloy or aluminum mother alloy.
摘要:
Provided herein are titanium alloys that can achieve a combination of high strength and high toughness or elongation, and a method to produce the alloys. By tolerating iron, oxygen, and other incidental elements and impurities, the alloys enable the use of lower quality scrap as raw materials. The alloys are castable and can form -phase laths in a basketweave morphology by a commercially feasible heat treatment that does not require hot-working or rapid cooling rates. The alloys comprise, by weight, about 3.0% to about 6.0% aluminum, 0% to about 1.5% tin, about 2.0% to about 4.0% vanadium, about 0.5% to about 4.5% molybdenum, about 1.0% to about 2.5% chromium, about 0.20% to about 0.55% iron, 0% to about 0.35% oxygen, 0% to about 0.007% boron, and 0% to about 0.60% other incidental elements and impurities, the balance of weight percent comprising titanium.
摘要:
A refractory metal core assembly for casting a seal slot in a turbine engine component. The first core plate (32) has a slot (50) and the second core plate (34) has a mating portion (52) which fits into the slot (50)
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung eines Gussteils (10), insbesondere eines Motorblocks, mit den Schritten: Erzeugen eines Speiserkerns (24), Einsetzen des Speiserkerns (24)in eine Gussform (20), Befüllen der Gussform (20) mit einem Flüssigmetall, dadurch gekennzeichnet, dass der Speiserkern im Inneren der Gussform (20) positioniert wird.
摘要:
The current invention is directed to a medical implant made of bulk-solidifying amorphous alloys and methods of making such medical implants, wherein the medical implants are biologically, mechanically, and morphologically compatible with the surrounding implanted region of the body.