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High strength Ni-base superalloy for directionally solidified castings

机译：高强度镍基高温合金，用于定向凝固铸件

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In order to provide a high strength Ni-base superalloy for directionally solidified castings, which is prevented from solidification cracking at the casting, having a sufficient grain boundary strength for ensuring reliability during its operation and a superior high temperature concurrently, a high strength Ni-base superalloy for directionally solidified castings having a superior grain boundary strength, which contains C: 0.05% to less than 0.1%, B: 0.015% to 0.04%, Hf: 0.01˜ less than 0.5%, Zr: less than 0.01%, Cr: 1.5%. about.16%, Mo: utmost 6%, W: 2˜12%, Re: 0.1˜9%, Ta: 2˜ 12%, Nb: utmost 4%, Al: 4. 5˜6.5%, Ti: less than 0.5%, Co: less than 9%, and Ni: at least 60% in weight, is disclosed.
机译：为了提供一种用于定向凝固铸件的高强度镍基高温合金，该铸件可防止铸件凝固裂纹，并具有足够的晶界强度以确保其在运行过程中的可靠性并同时具有优异的高温，因此，高强度镍具有优异的晶界强度的定向凝固铸件用基础超合金，其C：0.05％至小于0.1％，B：0.015％至0.04％，Hf：0.01小于0.5％，Zr：小于0.01％，Cr：1.5％。大约16％，Mo：最高6％，W：2〜12％，Re：0.1〜9％，Ta：2＆til;公开了按重量计12％，Nb：至多4％，Al：4。5〜6.5％，Ti：小于0.5％，Co：小于9％，Ni：至少60％。

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