Cu-based alloy powder

Patent metadata

Field	Value
Publication number	US-11976344-B2
Application number	US-201817059544-A
Country	US
Kind code	B2
Filing date	Nov 6, 2018
Priority date	Jun 1, 2018
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

A Cu-based alloy powder is provided that is suitable for a process involving rapid-melting and rapid-solidification and can produce a shaped article having superior properties. The powder is made of a Cu-based alloy. The Cu-based alloy includes 0.1 to 5.0 mass % of at least one element M selected from V, Fe, Zr, Nb, Hf, and Ta. The balance in the alloy is Cu and inevitable impurities. The powder has a ratio D50/TD of a mean particle diameter D50 (μm) to a tap density TD (Mg/m 3 ) in a range of 0.2×10 −5 ·m 4 /Mg to 20×10 −5 ·m 4 /Mg.

First claim

The invention claimed is:

1. A powder made of a Cu-based alloy comprising 0.1 to 5.0 mass % of at least two elements M selected from the group consisting of V, Fe, Zr, Nb, Hf, and Ta, the balance being Cu and inevitable impurities,
wherein the powder has a ratio D50/TD of a mean particle diameter D50 (μm) to a tap density TD (Mg/m 3 ) in a range of 0.2×10 −5 ·m 4 /Mg to 20×10 −5 ·m 4 /Mg.

2. The powder according to claim 1 , wherein the Cu-based alloy comprises 0.1 to 2.0 mass % of Zr.

3. A shaped article produced from a powder made of a Cu-based alloy, wherein:
the Cu-based alloy comprises 0.1 to 5.0 mass % of at least two elements M selected from the group consisting of V, Fe, Zr, Nb, Hf, and Ta, the balance being Cu and inevitable impurities,
the powder has a ratio D50/TD of a mean particle diameter D50 (μm) to a tap density TD (Mg/m 3 ) in a range of 0.2×10 −5 ·m 4 /Mg to 20×10 −5 ·m 4 /Mg,
the shaped article comprises a matrix phase comprising Cu as a main component and a precipitate formed in the matrix phase, and
the precipitate is composed of an element M single phase and/or a compound Cu X M Y , where X and Y each represent a natural number and a ratio X/Y of X to Y is 1.0 to 5.0.

4. The shaped article according to claim 3 , wherein the precipitate has a size of 0.01 to 20 μm.

Assignees

• Sanyo Special Steel Co Ltd

Inventors

• KUSE Tetsuji
• Maeda Soichiro
• Nagatomi Yuichi

Classifications

• B22F1/052 Primary

  characterised by a mixture of particles of different sizes or by the particle size distribution · CPC title

• C22C1/0425 Primary

  Copper-based alloys · CPC title

• B33Y70/00 Primary

  Materials specially adapted for additive manufacturing · CPC title

• C22C1/047

  comprising intermetallic compounds {(C22C1/0441 takes precedence)} · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title