公开(公告)号：US20160194736A1

公开(公告)日：2016-07-07

申请号：US14966564

申请日：2015-12-11

Applicant: ROLLS-ROYCE PLC

Inventor： Mark C. HARDY ,  Howard J. STONE ,  Steffen NEUMEIER ,  Nicholas G. JONES ,  Katerina CHRISTOFIDOU

IPC: C22C19/05

CPC classification number: C22C19/056 ,  C22C19/05 ,  C22C30/00 ,  C22F1/10

Abstract: A nickel-base alloy having the following composition (in atomic percent unless otherwise stated): between 12 and 15% of elements from the group consisting of Al, Ti, Ta and Nb, between 12.5% and 17.5% Cr, between 22 and 29% Co, between 0 and 1.5% W, between 0 and 3% Mo, between 0.1 and 0.3% C, between 0.05 and 0.2% B, between 0.02 and 0.07% Zr and, optionally, up to 2% Fe, up to 1% Mn, up to 1% Si, and up to 0.05 Mg; the balance being Ni and incidental impurities. The alloy has an improved combination of properties (principally improved resistance to high temperature deformation and surface environmental damage) compared with known alloys, and is intended to operate for prolonged periods of time above 700° C., and up to peak temperatures of 800° C.

Abstract translation: 具有以下组成的镍基合金（除非另有说明，为原子百分数）：来自Al，Ti，Ta和Nb的元素的12至15％，Cr的12.5％至17.5％，22至29之间 ％Co，0至1.5％W，0至3％Mo，0.1至0.3％C之间，0.05至0.2％B之间，0.02至0.07％之间的Zr，以及任选高达2％的Fe，最高达1％ ％Mn，高达1％的Si和高达0.05 Mg; 余量为镍和杂质。 与已知合金相比，该合金具有改进的性能组合（主要是改善的耐高温变形性和表面环境损害），并且旨在在高于700℃的高温下操作，并且达到峰值温度为800° C。