Patent ID: 8845958
Filing Date: 2014-09-30
Classification: C22B,C22C,C22F

Abstract:
1. A Ni-base alloy material consisting of, by mass, not more than 0.15% carbon, not more than 1% Si, not more than 1% Mn, from 10 to 24% Cr, a combination of an essential element of Mo and an optional element W in terms of 5%≦Mo+(W/2)≦13%, from 0.5 to 1.8% Al, from 1 to 2.5% Ti, not more than 0.0005 to 0.0030% Mg, at least one element selected from the group of B and Zr in amounts of not more than 0.02% B and not more than 0.2% Zr, optionally Fe and the balance being Ni and unavoidable impurities, wherein the value of Al/(Al+0.56Ti) is 0.45 to 0.70, wherein the Ni-base alloy material has a Mo segregation ratio of 1 to 1.17, and which has not a region in which a series of ten or more Mo rich carbides, each having a size of not less than 3 μm, are continuously present at intervals of not more than 10 μm.