NI-BASE CORROSION RESISTANT ALLOY POWDER FOR ADDITIVE MANUFACTURING, AND MANUFACTURING METHOD OF ADDITIVELY FORMED PRODUCT USING SAID POWDER

Title:

NI-BASE CORROSION RESISTANT ALLOY POWDER FOR ADDITIVE MANUFACTURING, AND MANUFACTURING METHOD OF ADDITIVELY FORMED PRODUCT USING SAID POWDER

Document Type and Number:

WIPO Patent Application WO/2020/179388

Kind Code:

A1

Abstract:

[Problem] To provide a Ni-base corrosion resistant alloy powder suitable for additive manufacturing, and a manufacturing method using this powder for manufacturing an additively formed product that has excellent corrosion resistance and few defects. [Solution] This Ni-base corrosion resistant alloy powder for additive manufacturing has a component composition which contains, in mass %, Cr: 14.5-24.5%, Mo: 12.0-23.0%, Fe: 0.01-7.00%, Co: 0.001-2.500%, Mg: 0.010% or less, N: 0.040% or less, Mn: 0.001-0.50%, Si: 0.001-0.200%, Al: greater than 0-0.50%, Ti: 0.001-0.500%, Cu: 0.250% or less, V: 0.001-0.300%, B: 0.0001-0.0050%, Zr: 0.0001-0.0200% and O: 0.0010-0.0300%, the remainder being Ni and unavoidable impurities; the C, S and P contained as the aforementioned unavoidable impurities include less than 0.05% of C, less than 0.01% of S and less than 0.01% of P, wherein the powder has a particle distribution in which d10 is 15-100 μm, d50 is 30-250 μm and d90 is 50-480μm.

Inventors:

DAIGO YUZO (JP)
SUGAHARA KATSUO (JP)

Application Number:

PCT/JP2020/005414

Publication Date:

September 10, 2020

Filing Date:

February 12, 2020

Export Citation:

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Assignee:

HITACHI METALS LTD (JP)

International Classes:

B22F1/00; B22F3/105; B22F3/16

Foreign References:

JP2016128190A	2016-07-14
JP2010001558A	2010-01-07
JPH0747989B2	1995-05-24
JP2010001558A	2010-01-07
US3046108A	1962-07-24

Other References: