Abstract: A method is provided for improving the formability of low carbon steel sheet by heating it to a temperature above about 250.degree. C. such that the interstitial element content of the steel's ferrite matrix is in the range of from about 5 to 50 parts by weight per million parts iron; quenching the steel to retain at least 5 weight parts per million parts iron of the interstitial elements in the ferrite; and cooling the steel to a temperature below about 0.degree. C. for forming.

Abstract: A copper base brazing alloy consisting of, in percent by weight, 25 to 40 manganese, 0 to 10 nickel, 0 to 10 iron, 0 to 6 indium and 0 to 10 tin with the combination of tin and indium being not less than 2, and the balance essentially copper, is suitable for brazing cemented carbide to steel in a temperature range 815.degree.-900.degree. C. (1500.degree.-1650.degree. F.). The brazing temperature of these filler alloys are at least 100.degree. F. lower than those of non-precious brazing filler alloys of the prior art used for this application and are considerably less expensive than prior art precious metal brazing alloys currently being used. The resulting cemented carbide to steel joints have high shear strength and good ductility.

Abstract: A method of continuously casting a molten metal in a casting means to obtain a solidified cast bar at a hot-forming temperature, passing the cast metal at a hot-forming temperature from the casting means to a hot-forming means, and hot forming the cast bar into a wrought product by a two-stage reduction of its cross-sectional area while it is still at a hot-forming temperature, including, in the first stage, the step of forming a shell of finely distributed recrystallized grains in the surface layers of the cast bar by compressive forging affecting at least the surface layer of the cross section of the bar in its as-cast condition prior to the second stage in which substantial reduction of its cross-sectional area by rolling deformation forms the desired wrought product.

Abstract: A high performance carbon steel tubular for critical Oil Country applications and a process for its preparation are disclosed. The tubular is particularly adapted for use in deep wells where the tubular may be subjected to high pressure, wide temperature ranges, and/or corrosive environments, which may include hydrogen sulfide, carbon dioxide, and brine water, together with hydrocarbons. The process comprises forming the steel into tubular form, intercritically heat treating the form, removing surface defects, cold working the tubular form to finished dimensions, intercritically heat treating the tubular form, and quenching and tempering the finished tubular.

Abstract: The yield strength and tensile strength of a duplex stainless steel alloy body are substantially increased and its anisotropy is substantially reduced by heating it until it is completely ferritic or nearly so and then aging it to cause fine austenitic precipitates to form throughout the body.

Abstract: Method and apparatus for punching the tuyeres of a converter with a mechanical puncher mounted upon a carriage running on rails. Light intercepting plates encoded by light transmission holes are disposed opposite each tuyere. Light is shone towards the light intercepting plates and detected on the opposite side thereof by photoelectric elements the outputs of which are coupled to a digital processor which controls the speed and position of the carriage. The mechanical puncher has two cylinders each of which drives two punching rods to successively punch the tuyeres. If it is impossible to punch a tuyere with the mechanical puncher were moving in one direction, the position of the puncher is shifted by one tuyere to start the punching again in the opposite direction.

Abstract: A method of continuously casting a molten metal in a casting means to obtain a solidified cast bar at a hot-forming temperature, passing the cast metal at a hot-forming temperature from the casting means to a hot-forming means, and hot forming the cast bar into a wrought product by a two-stage reduction of its cross-sectional area while it is still at a hot-forming temperature, including, in the first stage, the step of forming a shell of finely distributed recrystallized grains in the surface layers of the cast bar by a selected small amount of deformation of the cast bar in its as-cast condition prior to the second stage in which substantial reduction of its cross-sectional area forms the wrought product. The shell of fine grains formed on the cast bar during the first stage of deformation permits substantial reduction of the cross-sectional area of the cast bar during the second stage of deformation without the cast bar cracking, even when the cast bar has a high impurity content.

Abstract: A process for improving the wear resistance of metals, comprising the operation of implanting into a metal article the wear resistance of which is to be improved ions of a material which is capable of forming within the article oxide compounds having a perovskite-type structure, and terminating the implantation of the ions when a dose of at least 10.sup.15 ions per square centimeter has been implanted.The process may also include an oxidizing stage after the implantation of the ions. Examples of the process are described in which the article is made of a steel and the ions are selected from the group consisting of Y.sup.+, Sc.sup.+, Yb.sup.+, Ce.sup.+, La.sup.+ and Dy.sup.+.

Abstract: This invention relates to an aluminum-zinc alloy coated ferrous base product which exhibits improved atmospheric corrosion resistance, and to the process whereby such improved corrosion resistance may be realized. The process is characterized by the steps of heating such coated product to a temperature within the single phase region for the composition corresponding to the aluminum and zinc of said coating, defined as .alpha. in the FIGURE in the accompanying drawing, preferably at a temperature between about 650.degree. F. (343.degree. C.) to 750.degree. F. (399.degree. C.), for a period of time to solution treat the aluminum-zinc alloy coating overlay, and cooling slowly to at least 350.degree. F. (177.degree. C.).

Abstract: This invention relates to an aluminum-zinc alloy coated ferrous product whose coating is highly ductile, and to the method whereby such improved coating ductility may be realized. The process is characterized by the steps of thermally treating the aluminum-zinc alloy coated product by heating to a temperature between about 200.degree. F. (93.degree. C.) and 800.degree. F. (427.degree. C.) and holding for a period of time to effect metallurgical structure changes, among them being the precipitation of a second phase incoherent with the matrix, followed by slow cooling to at least 400.degree. F. (205.degree. C.). The resulting product is characterized by an aluminum-zinc alloy coating with a hardness no greater than about 115 VHN, and preferably no greater than about 110 VHN.

Abstract: A non-precious metal alloy for use in restorative dentistry comprising in percent weight: copper 60-66, silicon 0.60-1.65, aluminum 0.25-0.75, titanium 0.20-0.80, chromium 0.10-0.80, and zinc 33-36.

Abstract: Tubes and method of manufacturing tubes from alloyed steel adapted to be welded for underwater hydrocarbon pipelines having high ductility at low temperatures. A low carbon alloyed steel containing less than 0.08% carbon and with at the most 0.30% silicon, also containing manganese and a metal generating special carbides such as molybdenum, niobium, vanadium and like-acting substances, is cast in a centrifugal casting mould after which the centrifugally cast tube is subjected to controlled cooling and a thermal treatment. Tubes so constructed may be used for drilling tubes, tubes for underwater pipelines and tubes for the construction of drilling platforms at sea in cold regions and applications requiring high ductility at low temperature.

Abstract: A heavy thick steel casting having high mechanical strength with a tensile strength of 80 kg/mm.sup.2 or more, excellent impact properties with a vE.sub.O value of more than 8 kg-m/cm.sup.2 and improved weldability, and also a method of manufacturing the same.In the method, steel containing boron as an essential component and with a Ceq value corresponding to the maximum thickness of the product is cast. The casting is solidified in air, then heated to a temperature of 930.degree. to 1,050.degree. C. for one hour or more, followed by air cooling. Thereafter, the casting is quenched and tempered to thereby impart the casting with the desired characteristics.

Abstract: A method of making a low temperature bainite steel alloy gear includes forming a toothed gear having preferably preselected weight percentages of carbon, manganese, silicon, molybdenum, boron and the balance substantially iron, heating the gear to assure a substantially complete austenite morphology, quenching the gear toward a preselected temperature and avoiding transformation, and then holding the gear at the preselected temperature less than about two hours and transforming the austenite directly to substantially complete lower temperature bainite. Energy is saved by the short holding time and the usual further processing of the gear is avoided.

Abstract: Ferrous metal casting of manganese steel susceptible to austenization to develop minimum yield strength of about 75,000 psi and elongation of about 30% min. consisting essentially of:C--0.85Mn--14Si--0.6Cr--4Ni--3.6V--0.4balance essentially iron except for impurities.

Abstract: In a method for producing a Nb.sub.3 Sn superconductor which comprises drawing a composite having a core of a Nb-Hf alloy containing 0.1 to 30 atomic % of Hf and a sheath containing Cu and Sn, and heat-treating the composite to form a Nb.sub.3 Sn layer between the core and the sheath; the improvement wherein the sheath is formed of pure Cu, a Cu-Sn alloy containing not more than 6 atomic % of Sn, a Cu-Ga alloy containing not more than 20 atomic % of Ga, a Cu-Al alloy containing not more than 20 atomic % of Al, a Cu-Ga-Sn alloy containing not more than 6 atomic % of Sn and not more than 20 atomic % of Ga, or a Cu-Al-Sn alloy containing not more than 6 atomic % of Sn and not more than 20 atomic % of Al; and after the drawing, a Sn film is coated on the surface of the sheath, and then the product having a Sn film coated thereon is heat-treated.

Abstract: A method of producing substantially non-ageing cold rolled steel sheets having a remarkably excellent deep drawing property, wherein an extra low-carbon steel is melted together with niobium in an amount of less than the necessary amount for fixing completely carbon contained in the extra low-carbon steel to prepare a molten steel, the molten steel is made into an ingot and then the ingot is slabbed, or the molten steel is continuously cast to produce a slab, the slab is subjected to a hot rolling and a cold rolling to produce a cold rolled sheet according to an ordinary method, and the cold rolled sheet is subjected to a box annealing.

Abstract: A precipitation and dispersion hardening copper alloy is disclosed which combines useful properties of high tensile and yield strength, proportional limit, modulus of elasticity, ductility and formability, corrosion resistance, and electrical conductivity. The copper alloy consists of 2 to 9% nickel, 0.05 to 2% each of silicon, chromium and aluminum, and balance copper.

Abstract: A wire of a normally nonforgeable composition, having improved resistance to fracture during working, handling and use is comprised of a portion with a rapidly quenched structure as a continuous stratum along its length. A preferred wire useful for fusion welding has a circular cross section with a microcrystalline surface portion of at least 30 volume percent of the wire. Other preferred wires have elliptical or rectangular cross sections with amorphous strata continuous along their lengths.

Abstract: A chrome-tantalum thin film resistor having a chrome-tantalum alloy thin film containing 10 to 95 atomic % of chrome. By subjecting this chrome-tantalum alloy thin film to heat treatment at temperatures not higher than 900.degree. C., a stable resistor can be obtained. Alternatively, by forming the chrome-tantalum alloy thin film on a substrate which is preheated at temperatures not higher than 900.degree. C., the temperature coefficient of resistance of the resistor can be improved so that a stable resistor can be obtained.