Cr-Ni ALLOY AND SEAMLESS STEEL PIPE MADE OF Cr-Ni ALLOY

    公开(公告)号:US20200370151A1

    公开(公告)日:2020-11-26

    申请号:US16962299

    申请日:2019-01-17

    IPC分类号: C22C30/02 C22F1/16

    摘要: A Cr—Ni alloy having high yield strength and high resistance to sulfuric acid general corrosion at a high temperature of 250° C. is provided. The Cr—Ni alloy has a chemical composition consisting of, in mass %, Si: 0.01 to 0.50%, Mn: 0.01 to 1.00%, Cr: 21.0 to 27.0%. Ni: 40.0 to less than 50.0%, Mo: 4.5 to less than 9.0%, W: 2.0 to 6.0%, Cu: more than 2.0% and not more than 6.0%, Co: 0.01 to 2.00%, one or two kinds selected from the group consisting of Ca and Mg: 0.001 to 0.010% in total, sol. Al: 0.005 to 0.200%, N: 0.01 to 0.20%, and the balance being Fe and impurities. The dislocation density in the Cr—Ni alloy satisfies the following Formula (1): 8.00×1014≤ρ≤2.50×1015+1.40×1014×[Cu+Co]  (1)

    Iron-based anode for obtaining aluminum by the electrolysis of melts

    公开(公告)号:US10711359B2

    公开(公告)日:2020-07-14

    申请号:US14910483

    申请日:2013-08-19

    摘要: The invention concerns non-ferrous metallurgy, particularly an anode for electrolytically obtaining aluminum by the electrolysis of fluoride melts. The anode for obtaining aluminum by means of the electrolysis of melts at a temperature of less than 930° C. consists of a base executed of an alloy containing 65-96%wt of iron, less than 35%wt of copper, less than 20%wt of nickel, and one or several additives from molybdenum, manganese, titanium, tantalum, tungsten, vanadium, zirconium, niobium, chromium, aluminum (less than 1%wt) cobalt, cerium, yttrium, silicon, and carbon totaling less than 5%, and a protective oxide layer comprising iron oxides and complex oxides of iron, copper, and nickel. The protective oxide layer on the anode surface is obtained by preliminary oxidation in air at a temperature of 850-1050° C. or subsequently in the electrolysis process by oxidation with oxygen evolving at the anode.

    HARD POWDER PARTICLES WITH IMPROVED COMPRESSIBILITY AND GREEN STRENGTH

    公开(公告)号:US20200216935A1

    公开(公告)日:2020-07-09

    申请号:US16732831

    申请日:2020-01-02

    申请人: TENNECO INC.

    IPC分类号: C22C30/02 B22F9/08 B22F1/00

    摘要: A powder metal material and sintered component formed of the powder metal material is provided. The powder metal material comprises a plurality of particles including copper in an amount of 10 wt. % to 50 wt. %, based on the total weight of the particles. The particles also include at least one of iron, nickel, an cobalt. The particles further include at least one of boron, carbon, chromium, manganese, molybdenum, nitrogen, niobium, phosphorous, sulfur, aluminum, bismuth, silicon, tin, tantalum, titanium, vanadium, tungsten, hafnium, and zirconium. The particles are formed by atomizing and optionally heat treating. The particles consist of a first area and a second area, wherein the first area is copper-rich and the second area includes hard phases. The hard phases being present in an amount of at least 33 wt. %, based on the total weight of the second area.

    Copper-based alloy casting in which grains are refined

    公开(公告)号:US10570483B2

    公开(公告)日:2020-02-25

    申请号:US16033689

    申请日:2018-07-12

    发明人: Keiichiro Oishi

    摘要: A copper-based alloy casting includes 69 to 88% of Cu, 2 to 5% of Si, 0.0005 to 0.04% of Zr, 0.01 to 0.25% of P by mass, and a remainder including Zn and inevitable impurities, and satisfies 60≤Cu−3.5×Si−3×P≤71. Further, mean grain size after melt-solidification is 100 μm or less, and α, κ and γ-phases occupy more than 80% of phase structure. Furthermore, the copper-based alloy casting according to the invention can further include at least one element selected from a group consisting of 0.001 to 0.2% of Mg, 0.003 to 0.1% of B, 0.0002 to 0.01% of C, 0.001 to 0.2% of Ti and 0.01 to 0.3% of rare earth element.

    NiCrFe Alloy
    30.
    发明申请
    NiCrFe Alloy 审中-公开

    公开(公告)号:US20190284666A1

    公开(公告)日:2019-09-19

    申请号:US16339073

    申请日:2017-10-04

    摘要: The NiCrFe alloy according to the present invention has a chemical composition consisting of, in mass %, C: 0.03 to 0.15%, Si: not more than 1.00%, Mn: not more than 2.00%, P: not more than 0.040%, S: not more than 0.0050%, Cr: 18.0 to 25.0%, Ni: 25.0 to 40.0%, Ti: 0.10 to 1.60%, Al: 0.05 to 1.00%, N: not more than 0.020%, O: not more than 0.008%, and rare earth metal (REM): 0.001 to 0.100%, with the balance being Fe and impurities, the chemical composition satisfying Formulae (1) to (3): 0.50≤Ti+48Al/27≤2.20   (1) 0.40≤Ti/(Ti+48Al/27)≤0.80   (2) Σ[REM/(A(REM))]−S/32−2/3.O/16≥0   (3) where, each symbol of element in the formulae is substituted by the content (mass %) of the corresponding element, and A(REM) in Formula (3) is substituted by the atomic weight of each rare earth metal.