Ni-Cr ALLOY MATERIAL AND OIL WELL SEAMLESS PIPE USING SAME
    2.
    发明公开
    Ni-Cr ALLOY MATERIAL AND OIL WELL SEAMLESS PIPE USING SAME 有权
    NI-CR-LEGIERUNGSMATERIAL UND NAHTLOSESÖLQUELLENROHRDAMIT

    公开(公告)号:EP3070184A4

    公开(公告)日:2017-06-28

    申请号:EP14862365

    申请日:2014-11-11

    摘要: A Ni-Cr alloy material has a chemical composition that consists of; Si: 0.01 to 0.5%, Mn: 0.01 to less than 1.0%, Cu: 0.01 to less than 1.0%, Ni: 48 to less than 55%, Cr: 22 to 28%, Mo: 5.6 to less than 7.0%, N: 0.04 to 0.16%, sol.Al: 0.03 to 0.20%, REM: 0.01 to 0.074%, W: 0% or more and less than 8.0%, Co: 0 to 2.0%; one or more of Ca and Mg: 0.0003 to 0.01% in total, and one or more of Ti, Nb, Zr, and V: 0 to 0.5% in total, the balance thereof being Fe and impurities, and the impurities include C ‰¤ 0.03%, P ‰¤ 0.03%, S ‰¤ 0.001%, and O ‰¤ 0.01%. The dislocation density Á of the Ni-Cr alloy material expressed in m -2 satisfies a formula [7.0 × 10 15 ‰¤ Á ‰¤2.7 × 10 16 - 2.67 × 10 17 × REM]. This Ni-Cr alloy material is excellent in hot workability and toughness, and also in corrosion resistance in an environment being at high temperatures more than 200°C and including H 2 S.

    摘要翻译: Ni-Cr合金材料具有由以下组成的化学组成: Si:0.01〜0.5%,Mn:0.01〜小于1.0%,Cu:0.01〜小于1.0%,Ni:48〜小于55%,Cr:22〜28%,Mo:5.6〜小于7.0% N:0.04〜0.16%,sol.Al:0.03〜0.20%,REM:0.01〜0.074%,W:0%以上且小于8.0%,Co:0〜2.0% Ca和Mg中的一种或多种:总计0.0003至0.01%,以及Ti,Nb,Zr和V中的一种或多种:总计0至0.5%,余量为Fe和杂质,并且杂质包括C‰ ¤0.03%,P‰³0.03%,S‰¤0.001%和O‰¤0.01%。 Ni-Cr合金材料的位错密度ρ以m -2表示,满足公式[7.0×10 15‰×2.7×10 16 - 2.67×10 17×REM]。 该Ni-Cr合金材料的热加工性和韧性优异,而且在超过200℃的高温环境下,包含H 2 S的耐腐蚀性也优异。