Title: Solid-solution strengthened austenitic alloys

Abstract: Solid-solution strengthened austenitic alloys consisting of, in weight percent, no more than 0.1 % carbon, from 4 (%C) to 1 % titanium and/or niobium (alone or in combination), no more than 75 % cobalt, no more than 26 % chromium, from 8 % to 40 % tungsten, wherein the amount of 1/5 (%Co) + (%Cr) + (%W) is in the range from 38 % to 46 %, with or without at least one element from the group consisting of no more than 0.1 % boron, no more than 0.5 % zirconium, no more than 0.5 % yttrium and no more than 1 % hafnium, and the balance essentially nickel except for impurities. These alloys possess excellent high-temperature strength as well as good workability.

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Inventors: Watanabe, Rikizo (Yasugi, JA)
Chiba, Yositaka (Yasugi, JA)

Application Number: 457501
Filing Date: 1974-04-03
Publication_date: 1976-02-10
Assignee: Hitachi Metals, Ltd. (JA)
Primary Class(es): 148/442 148/425, 148/427
Other Classes:
US Patent Ref:

2299871	Oct, 1942	Baird	75/171.
2469718	May, 1949	Edlund et al.	75/171.
2704250	Mar, 1955	Payson	75/171.
3346378	Oct, 1967	Foster et al.	75/171.
3362816	Jan, 1968	Winter et al.	75/171.
3393999	Jul, 1968	Lherbier et al.	75/171.

Other Refs:
Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Weise, E. L.
Attorney: Craig & Antonelli