合金、合金粉末、合金部材および複合部材

Japanese Patent JP7176661

B2

The present invention provides an alloy, an alloy powder, an alloy member, and a composite member which are excellent in corrosion resistance and wear resistance, have crack resistance, and are suitable for an additive manufacturing method and the like. An alloy and an alloy powder include, by mass%, Cr: 18 to 22%, Mo: 18 to 28%, Ta: 1.5 to 57%, C: 1.0 to 2.5%, Nb: 0 to 42%, Ti: 0 to 15%, V: 0 to 27%, Zr: 0 to 29%, and a remainder consisting of Ni and unavoidable impurities, where a molar ratio of (Ta + 0.7Nb + Ti + 0.6V + Zr) / C = 0.5 to 1.5 is satisfied. An alloy member is an additively manufactured product or a cast having such a solidification structure, and the solidification structure is a dendrite-like crystal structure having a metal phase having a face-centered cubic structure and carbides. A composite member includes a base material and an alloy layer provided on a surface of the base material, the alloy layer is an additively manufactured product having such a solidification structure, and the solidification structure is a dendrite-like crystal structure having a metal phase having a face-centered cubic structure and carbides.

Hiroshi Shiratori
Kazuya Shinagawa
Kosuke Kuwahara
Hidemine Ozeki

JP2022512634A

November 22, 2022

March 31, 2021

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Hitachi Metals Co., Ltd.

C22C19/05; B22F1/00; B22F1/05; B22F5/00; B22F10/25; B22F10/28; B23K35/30; B23K35/32; B33Y70/00; B33Y80/00; C22C1/04; C22C27/02; C22C28/00; C22C30/00

JP2016216762A
JP7316696A

WO2019049594A1

Patent Attorney Corporation Isono International Patent and Trademark Office

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