Abstract: High strength and toughness cobalt-free maraging steel containing, by mass, 11 to 15% Ni, 0.5 to 4% Cr, 0.5 to 5.5% Mo, 0.5 to 2% Ti, 0.05% max. C, 1% max. Mn and 0.5% max. Si, the balance consisting of iron and unavoidable impurities. The amounts of Ni, Mo and Ti in the steel have the following relationship to one another: ##EQU1## A process for heat treating this steel is also disclosed.

Abstract: An austenitic stainless steel alloy is disclosed, having excellent fast neutron irradiation swelling resistance and good post irradiation ductility, making it especially useful for liquid metal fast breeder reactor applications. The alloy contains: about 0.04 to 0.09 wt. % carbon; about 1.5 to 2.5 wt. % manganese; about 0.5 to 1.6 wt. % silicon; about 0.030 to 0.08 wt. % phosphorus; about 13.3 to 16.5 wt. % chromium; about 13.7 to 16.0 wt. % nickel; about 1.0 to 3.0 wt. % molybdenum; and about 0.10 to 0.35 wt. % titanium.

Abstract: An alloy for use in an environment exposed to neutron rays consists principally of Cr-Ni austenite stainless steel containing nitrogen in an amount exceeding the amount of an impurity and having principally an austenite structure. The alloy is used for reactor core members such as a core shroud, core supporters, control rods, etc. which are exposed to the neutron radiation but prevented from being embrittled by the radiation.

Abstract: The high temperature mechanical strength of relatively inexpensive 18-8 stainless steel is improved by adding Cu, Co, Ti and Nb, and the decrease in the ductility caused by the addition of these elements is compensated for by addition of Mg or Y or Ca, Ce and La.

Abstract: A wrought alloy body is formed of a CA-6NM type alloy comprising by weight from about 11.5% to about 14.0% chromium, about 4.2% to about 5.5% nickel, about 0.010% to about 0.040% carbon, about 0.75% to about 0.92% manganese, about 0.28% to about 0.62% silicon, about 0.65% to about 0.83% molybdenum; not more than about 0.035% phosphorus, 0.015% sulphur and 0.025% nitrogen; and the remainder iron and incidental residuals. The alloy exhibits yield strength above about 100,000 psi, tensile strength above about 120,000 psi at room temperature and impact strength above about 90 ft. lbs. at 0.degree. C. A method is provided for producing said wrought body by hot working.

Abstract: Magnesium alloys containing up to 12 percent of aluminum, up to 30 percent of zinc, up to 1.5 percent of silicon, not more than 0.15 percent of manganese, and from 0.0025 percent to 0.0125 percent of dissolved beryllium are disclosed. The alloys are resistant to oxidation when they are in a molten state. A method for die casting such alloys is also disclosed.

Abstract: An amorphous film formed of a transition element-silicon compound which has excellent electric and optical characteristics is disclosed. The compound is amorphous and has a Si content of 60-85 at. %.

Abstract: A high-Al heat resistant steel comprising a base steel containing not more than 0.7% C, not more than 3.0% Si, not more than 2.0% Mn, 10 to 40% Ni, 9 to 30% Cr, 2 to 8% Al, with balance being Fe and unavoidable impurities, and an Al coating formed on the base steel. The Al coating diffuses into the base steel to form an intermediate Al alloyed layer during the Al coating or by heating after the coating, which alloyed layer prevents the Al coating from spalling, thus providing excellent resistance to oxidation, corrosion, carburization, nitrization and sulphurdization at elevated temperatures.

Abstract: An ultra high carbon steel having a composition of carbon in an amount of from about 0.8 weight percent up to the maximum solubility limit of carbon in austenite; silicon in an amount of from about 3 to about 7 weight percent; an effective amount of a stabilizing element acting to stabilize iron carbide against graphitization in the presence of silicon; and the balance iron. Preferably, the silicon is present in an amount of about 3 weight percent, and the stabilizing element is chromium. The ultra high carbon steel may be processed to a form suitable for subsequent superplastic forming by any technique which reduces its grain size to about 10 microns or less, and preferably to about 0.4 to about 2 microns. The silicon and the stabilizing element act to produce a stable iron carbide particle array to retain the fine grain size during superplastic processing, and to increase the eutectoid temperature so that superplastic processing may proceed at high strain rates and low stress levels at elevated temperature.

Abstract: The present invention relates to the austenitic steel having improved resistance to oxidation at the high temperature, comprising not more than 0.10% C, 0.1-5.0% Si, not more than 3% Mn, 7-45% Ni, 15-30% Cr and sulfur content being restricted to not more than 0.003%. According to the present invention, by limiting the sulfur content in the austenitic steel to not more than 0.003%, preferably to not more than 0.0015%, the heat-resisting steel material which can show improved resistance to oxidation under severe conditions including repeated heating to high temperatures and cooling to room temperature is provided.

Abstract: This invention describes a composition for an austenitic stainless steel which has been found to exhibit improved high temperature stress rupture properties. The composition of this alloy is about (in wt. %): 12.5 to 14.5 Cr; 14.5 to 16.5 Ni; 1.5 to 2.5 Mo; 1.5 to 2.5 Mn; 0.1 to 0.4 Ti; 0.02 to 0.08 C; 0.5 to 1.0 Si; 0.01 maximum, N; 0.02 to 0.08 P; 0.002 to 0.008 B; 0.004-0.010 S; 0.02-0.05 Nb; 0.01-0.05 V; 0.005-0.02 Ta; 0.02-0.05 Al; 0.01-0.04 Cu; 0.02-0.05 Co; 0.03 maximum, As; 0.01 maximum, O; 0.01 maximum, Zr; and with the balance of the alloy being essentially iron. The carbon content of the alloy is adjusted such that wt. % Ti/(wt. % C+wt. % N) is between 4 and 6, and most preferably about 5. In addition the sum of the wt. % P+wt. % B+wt. % S is at least 0.03 wt. %. This alloy is believed to be particularly well suited for use as fast breeder reactor fuel element cladding.

Abstract: An invar alloy on the basis of iron is formed by an intermetallic compound having a cubic crystal structure of the NaZn.sub.13 type having nominal composition La(FeCoX).sub.13, wherein X is Si or Al. By subjecting the present intermetallic compound after melting to a tempering treatment at 800.degree.-1,000.degree. C. and cooling it in an accelerated manner, a brittle material is obtained which can be ground to form a powder. From this powder, articles having any desired (optionally complicated) shape can be produced by means of powder metallurgy. By mixing powders of two different intermetallic compounds, a material can be obtained having a substantially negligible coefficient of linear thermal expansion in the temperature range from 0.degree. C. to 200.degree. C.

Abstract: This invention relates to the production of large shapes of metallic glass fabricated from ribbon. The inventive method contemplates placing the ribbon and consolidating the alloy under a pressure or at least 1000 psi at a temperature of between 70% and 90% of the crystallization temperature for a time sufficient to facilitate bonding of the ribbons.

Abstract: A welded structure for use at very low temperatures having structural metallic members of austenitic stainless steel welded with a welding material of austenitic stainless steel. The oxygen content of the portion of the deposited metal where there is no dilution with the material of the structural metallic member is not greater than 0.06 wt %. The structural metallic members and the deposited metal have chemical compositions consisting essentially of 0.01 to 0.1 wt % of C, 0.05 to 1 wt % of Si, 1 to 10 wt % of Mn, 8 to 20 wt % of Ni, 16 to 22 wt % of Cr and the balance substantially Fe and have a fully austenite structure. The Ni equivalent of the deposited metal ranges between 17 and 22. The welded structure for use at very low temperatures can be used, for example, as the container for the magnet of a superconducting generator rotor.

Abstract: A novel low C-Cr-Mo steel having an excellent weldability and a high erosion-corrosion resistance under wet steam, which consists of, in % by weight, 0.02-0.14% of C, not more than 0.90% of Si, 0.30-0.80% of Mn, 0.70-1.60% of Cr, 0.40-0.70% of Mo and the remainder being substantially Fe. This novel steel is a very excellent material for fabricating the portions in the feed-water heater, for example, for a nuclear power generation plant, the portions being used under wet steam condition. The above described weldability and erosion-corrosion resistance can be improved by additionally adding the second components of Cu, N, or B, the third components of Nb or V or the fourth components of Al, Ti or Zr in the respectively defined amounts.

Abstract: A heat-resisting spheroidal graphite cast iron comprises carbon ranging from 1.8 to 3.4% by weight, silicon ranging from 3.5 to 6% by weight, manganese ranging from 0.7 to 1.25% by weight, chromium ranging from 3 to 5% by weight, nickel ranging from 18 to 24% by weight, an element for spheroidizing graphite, not more than 0.1% by weight, and the balance being substantially iron, thereby attaining excellent oxidation-resistance and oxide film adherance characteristics while being kept inexpensive.

Abstract: Disclosed is a novel refractory metal alloy that retains the essential characteristics of pure tantalum and, additionally, has improved engineering characteristics and may be produced at a lower cost than pure tantalum. The alloy nominally contains, by weight, about 58% tantalum, about 2.0% molybdenum, about 2.5% tungsten and about 37.5% columbium.

Abstract: The present invention relates to iron-based alloys with a low coefficient of expansion and to the uses of these alloys for welded structural elements operating under cryogenic conditions. The alloys according to the invention contain by weight 35 to 39% of nickel, 0 to 20% of cobalt, 0 to 0.25% of silicon, 0 to 0.04% of carbon, 0 to 0.004% of sulfur, 0 to 0.008% of phosphorus, manganese, the remainder being formed by iron and by impurities. They are characterized by the fact that they contain 0.2% to 1.5% of manganese and 0.2 to 0.5% of titanium.

Abstract: A magnetic material wire is composed of a core of magnetic material having a Curie point of 70.degree. to 250.degree. C. and a high conductive metal sheathing of a uniform thickness covering the core. The ratio of the metal sheathing to the wire in cross-section is in the range of 15 to 40%. There is also disclosed a method of producing such a wire.

Abstract: The present invention relates to a fully austenitic, nonmagnetic stainless steel which maintains the carbon concentration of the final steel near the solubility limit for carbon in the steel and adds columbium in an amount sufficient to stabilize the steel by columbium's preferential scavenging of carbon over chromium. This preferential scavenging substantially eliminates chromium carbide formation at grain boundaries in the solid solution of the final stainless steel product. A highly preferred stainless steel consists essentially of, by weight:16-20% Manganese,12-15% Chromium,5.0% Molybdenum max.,2.5% Nickel max.,1.0% Copper max.,0.75% Silicon max.,0.2-0.5% Nitrogen,0.04% Phosphorus max.,0.01% Sulfur max.,0.035% Carbon max.,Columbium at a concentration of at least ten times the Carbon concentration, andthe remainder being essentially Iron with incidental impurities.