Copper alloy powder for lamination shaping, lamination shaped product production method, and lamination shaped product

Patent metadata

Field	Value
Publication number	US-2020122229-A1
Application number	US-201816605358-A
Country	US
Kind code	A1
Filing date	Jun 15, 2018
Priority date	Aug 21, 2017
Publication date	Apr 23, 2020
Grant date	—

Abstract

An object of the present invention is to provide a copper alloy powder for lamination shaping comprising a copper alloy, a method for producing a lamination shaped product and a lamination shaped product, which can achieve coexistence of mechanical strength and conductivity. One aspect of the present invention relates to a copper alloy powder for lamination shaping, comprising at least one additive element having a solid solution amount to copper of less than 0.2 at %.

First claim

1 . A copper alloy powder for lamination shaping, comprising at least one additive element having a solid solution amount to copper of less than 0.2 at %.

2 . The copper alloy powder for lamination shaping according to claim 1 , wherein the additive element is at least one selected from the group consisting of W, Zr, Nb, Nd, Y, Mo, Os or Ru.

3 . The copper alloy powder for lamination shaping according to claim 1 , wherein the copper alloy powder contains the additive element in an amount of from 0.1 to 12.0 at %.

4 . The copper alloy powder for lamination shaping according to claim 1 , wherein the copper alloy powder has an average particle diameter D50 of from 20 to 100 μm.

5 . The copper alloy powder for lamination shaping according to claim 1 , wherein the capper alloy powder has an oxygen concentration of 1000 wtppm or less.

6 . A method for producing a lamination shaped product using the copper alloy powder for lamination shaping according to claim 1 , the method comprising the steps of:
spreading the copper alloy powder on a shaping stage to form a thin layer thereon; and irradiating a portion of the thin layer to be shaped with an electron beam to melt the copper alloy powder and then solidifying the molten copper alloy powder by natural cooling; wherein the steps are repeated several times to produce a lamination shaped product.

7 . A method for producing a lamination shaped product using the copper alloy powder for lamination shaping according to claim 1 , the method comprising the steps of:
spreading the copper alloy powder on a shaping stage to form a thin layer thereon; and irradiating a portion of the thin layer to be shaped with a laser beam to melt the copper alloy powder and then solidifying the molten copper alloy powder by natural cooling; wherein the steps are repeated several times to produce a lamination shaped product.

8 . A lamination shaped product comprising a copper alloy, wherein the copper alloy contains at least one additive element having a solid solution amount of less than 0.2 at %, and the copper alloy has a relative density of 98% or more relative to theoretical density; a conductivity of 50% IACS or more, and a 0.2% yield strength of 700 MPa or more.

9 . The lamination shaped product according to claim 8 , wherein the additive element is at least one selected from the group consisting of W, Zr, Nb, Nd, Y, Mo, Os or Ru.

10 . The lamination shaped product according to claim 8 , wherein the copper alloy powder contains the additive element in an amount of from 0.1 to 12.0 at %.

Assignees

• Jx Nippon Mining & Metals Corp

Inventors

• Sato Kenji
• Shibuya Yoshitaka

Classifications

• B33Y80/00

  Products made by additive manufacturing · CPC title

• B22F2202/11

  Use of irradiation · CPC title

• B22F2301/10

  Copper · CPC title

• B22F3/16

  in successive or repeated steps · CPC title

• B22F2998/10

  Processes characterised by the sequence of their steps · CPC title