Abstract: Controlled low expansion alloys containing nickel, titanium, columbium, silicon, etc., and optionally cobalt can be heat treated using relatively short periods of time. Aging treatments can be less than eight hours, for example, four hours.

Abstract: In an age hardenable controlled expansion alloy essentially devoid of chromium, the combination of short term tensile properties and elevated temperature properties, particularly notch rupture strength, are improved by the inclusion therein of silicon in an amount leass than 1%.

Abstract: Directed to an overaging heat treatment applied to age-hardenable nickel-cobalt-iron controlled expansion alloys so as to contribute high notch strength at temperatures on the order of about 1000.degree. F. thereto.

Abstract: Directed to an overaging heat treatment applied to age-hardenable nickel-iron controlled expansion alloys so as to contribute high notch strength at temperatures on the order of about 1000.degree. F. thereto.

Abstract: An iron-based brazing alloy suitable for brazing iron-based alloys subject to high temperature environments. The resulting brazement contains little or no undesirable chromium boride (CrB) phase. Manganese, substituted for boron, depresses the melting point of the brazing alloy and vaporizes during the brazing cycle. This vaporization, by adjusting the relative proportions of the remaining elements, raises the remelt temperature of the brazement.

Abstract: An improved process is provided for producing mechanically alloyed powders of simple and complex alloy systems. In the improved process, the mechanically alloyed powder is milled to an acceptable processing level in a gravity-dependent ball mill to obtain a powder characterized by a laminate-type microstructure which is substantially optically homogeneous at a magnification of 100.times.. Such acceptable processing level is reached without processing the powder to a featureless microstructure or to saturation hardness.

Abstract: An apparatus (10) and method for fabricating tubes (26) from powders (32). A retractable, rotating mandrel (18) is disposed within a powder hopper (12) and circumscribed by a plurality of swaging dies (20). A flexible iris (14), disposed between the hopper (12) and the dies (20), reduces powder (32) loss.As the mandrel (18) is withdrawn from the hopper (12), the dies (20) alternatingly expand and contract compacting the powder (32) in a compaction zone (48) about the mandrel (18) to form a tube (26). The resultant continuous tube (26) is withdrawn along with the mandrel (18).

Abstract: A welding alloy particularly directed to use as a wrought filler metal and contains selected percentages of chromium, molybdenum, manganese, columbium, magnesium, a number of trace elements and the balance essentially nickel.

Abstract: Surface treatment of stainless steel with pulsed beam from laser benefits resistance to corrosion in acid chloride media.

Abstract: A weldable oxide dispersion strengthened alloy which provides improved welds and welded structures of oxide dispersion strengthened materials is characterized by good retention of dispersoid distribution in the fusion weld zone.

Abstract: Directed to a nickel-chromium-molybdenum alloy containing about 1.3% to about 3% of aluminum plus titanium, which is particularly useful where corrosion resistance, strength and ductility are required, such as in oil well tubing.

Abstract: A coated electrode having a flux formulation that is a function of the diameter of the electrode wire. The electrode wire is made from a nickel-chromium-cobalt-molybdenum-aluminum alloy. The flux coating contains differing amounts of manganese, iron and columbium depending on the diameter of the core wire.

Abstract: Directed to non-destructive testing, particularly ultrasonic inspection of round stock such as tubing, pipe and rod wherein the inspection is conducted within a water tank to provide ultrasonic coupling of the ultrasonic probe or probes employed wherein the distance between the probe or probes and the surface of the round stock being inspected is maintained essentially constant during the course of the test to assure reliable inspection results and wherein the materials handling aspects of the testing are simplified.

Abstract: Gas content of atomized metal powder can be reduced by conducting the atomization process at subatmospheric pressure and maintaining evacuation during atomization process.

Abstract: Powder rolling apparatus, for the production of strip equal in width to the length of the roll faces, is provided with edge restraint devices in the form of wheels fitted with pneumatic tires and mounted in the roll gap region to be freely rotatable about axes which are perpendicular to, but preferably not coplanar with the roll axes. The wheels are driven by frictional contact between the smooth tread surface of the tires and the end-faces of the rolls.

Abstract: Nickel-iron base alloy characterized by controlled thermal expansion coefficient and inflection temperature and by desirable high strength in age-hardened condition has composition specially restricted to overcome detrimental sensitivity to stress-concentrating geometries and aid resistance to long-enduring stress in heated oxidizing atmospheres. The alloy contains, by weight, 34% to 55.3% nickel, up to 25.2% cobalt, 1% to 2% titanium, 1.5% to 5.5% of columbium plus 1/2 the weight percent of any tantalum, up to 1% chromium, not more than 0.2% aluminum and the balance essentially iron.

Abstract: Method and apparatus for fluid pressure testing of tubes or pipes is provided wherein the tube or pipe under test is sealed at the ends by a resilient O-ring between the inside diameter of the tube or pipe and convex, preferably conical faces at each end of the tube or pipe, with the conical faces being held firmly in place against the outward thrust of the test fluid pressure by hydraulic action utilizing the pressurized testing fluid.

Abstract: Iron-nickel-chromium alloy wherein other elements, including columbium and titanium, are specially controlled has high strength and long-time stability for extended service at intermediate temperatures, such as automotive turbine service for 5000 hours at 1200.degree. F.

Abstract: A metal sorter including a pair of electrically conductive probes of identical metallic composition are placed in contact with a metallic specimen. A thermoelectric heat pump is positioned between the two probes to produce a temperature difference therebetween, a temperature sensing device senses the temperature difference and provides an electric signal to control the electric power supplied to the heat pump. A detection device provides an electric signal indicative of the potential difference between the probes.

Abstract: A nickel-base alloy intended for diverse application, including components for high temperature, gas cooled reactors (HTGR), the alloy containing, in addition to nickel, chromium, tungsten, titanium and carbon, the presence of aluminum and cobalt being controlled for HTGR use.