Two-phase alloy, product using said two-phase alloy, and method for producing said product

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United States of America Patent

PATENT NO 10718038
APP PUB NO 20170292175A1
SERIAL NO

15510322

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Abstract

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An object of the invention is to provide: a two-phase alloy as a metal material that can be preferably utilized under circumstances of a temperature range and a high corrosion as in an oil well, the two-phase alloy having a high corrosion resistance and good mechanical properties that are equivalent or more than those of conventional ones, and saving a cost; a product of the two-phase alloy; and a method for producing the product. There is provided a two-phase alloy containing Cr as a major component and including two phases of an austenite phase and a ferrite phase in a mixed state. The alloy has a chemical composition containing: 34-70 mass % of Cr; 17-45 mass % of Ni; 10-35 mass % of Fe; 0.1-2 mass % of Mn; 0.1-1 mass % of Si; and impurities. The total content of the Ni and the Fe is 30-65 mass %.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTDCHIYODA-KU TOKYO 100-8280

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aono, Yasuhisa Tokyo, JP 40 530
Kimura, Tomonori Tokyo, JP 92 1055
Maruno, Yusaku Tokyo, JP 6 44
Noujima, Masafumi Tokyo, JP 17 137
Ogata, Makoto Tokyo, JP 39 308
Okizaki, Naoya Tokyo, JP 9 6

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