Method of manufacturing billet for plastic working for producing composite member, and billet manufactured thereby

Patent metadata

Field	Value
Publication number	US-2020324343-A1
Application number	US-201916427909-A
Country	US
Kind code	A1
Filing date	May 31, 2019
Priority date	Apr 15, 2019
Publication date	Oct 15, 2020
Grant date	—

Abstract

Disclosed are a method of manufacturing a billet used in plastic working for producing a composite member and a billet manufactured by the method. The method includes (A) ball-milling powders of two more materials to prepare a composite powder and (B) preparing a multi-layered billet containing the composite powder. The multi-layered billet includes a core layer and two or more shell layers. The shell layers except for the outermost shell layer are made of the composite powder. The outermost shell layer is made of a pure metal or metal alloy. The composite powders contained in the core layer and each of the shell layers have different compositions. The method has an advantage of manufacturing a plastic working billet being capable of overcoming the limitation of a single-material billet and enabling production of a characteristic-specific composite member such as a clad member.

First claim

What is claimed is:

1 . A method of manufacturing a billet for plastic working for producing a composite member, the method comprising:
(A) ball-milling powders of two or more materials to produce a composite powder; and (B) preparing a multi-layered billet using the composite powder, wherein the multi-layered billet comprises a core layer and at least two shell layers surrounding the core layer, the shell layers except for the outermost shell layer are made of the composite powder, the outermost shell layer is made of a pure metal or a pure metal alloy, and the composite powders contained in the core layer and each of the shell layers have different compositions.

2 . The method according to claim 1 , wherein the two or more materials are selected from the group consisting of metal, polymer, ceramic, and carbon-based nano materials.

3 . The method according to claim 2 , wherein the metal is any one metal or a metal alloy of two or more metals selected from the group consisting of Al, Cu, Ti, Mg, K, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, Ga, Rb, Sr, Y, Zr, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Cs, Ba, La, Ce, Nd, Sm, Eu, Gd, Tb, W, Cd, Sn, Hf, Ir, Pt, and Pb.

4 . The method according to claim 2 , wherein the polymer is (i) a thermoplastic resin selected from the group consisting of an acrylic resin, an olefin resin, a vinyl resin, a styrene resin, a fluorine resin, and a fibrinogen resin, or (ii) a thermosetting resin selected from the group consisting of an epoxy resin and a polyimide resin.

5 . The method according to claim 2 , wherein the ceramic is (i) an oxide ceramic or (ii) any one non-oxide ceramic selected from the group consisting of nitrides, carbides, borides, and silicides.

6 . The method according to claim 2 , wherein the carbon nanomaterial is at least one selected from the group consisting of carbon nanotubes, carbon nanofibers, carbon nanoparticles, mesoporous carbon, carbon nanosheets, carbon nanorods, and carbon nanobelts.

7 . The method according to claim 1 , wherein the multi-layered billet comprises a core layer, a first shell layer surrounding the core layer, and a second shell layer surrounding the first shell layer.

8 . The method according to claim 7 , wherein the multi-layered billet comprises a first billet serving as the second shell layer and has a can shape, a second billet serving as the first shell layer and disposed inside the first billet, and a third billet serving as the core layer and disposed inside the second billet.

9 . The method according to claim 1 , wherein in the step (B), the preparing of the multi-layered billet comprises compressing the composite powder at a high pressure of 10 to 100 MPa.

10 . The method according to claim 1 , wherein in the step (B), the preparing of the billet comprises subjecting the composite powder to spark plasma sintering performed at a pressure of 30 to 100 MPa and a temperature of 280° C. to 600° C. for a duration of 1 second to 30 minutes.

11 . A billet used in plastic working for producing a composite member, the billet being manufactured by the method of claim 1 .

Assignees

• Nat Univ Pukyong Ind Univ Coop Found

Inventors

• Kwon Hansang

Classifications

• B22F2301/052

  Aluminium · CPC title

• B22F2009/043

  by ball milling · CPC title

• B22F2302/403

  Carbon nanotube · CPC title

• B22F7/06 Primary

  of composite workpieces or articles from parts, e.g. to form tipped tools {(B22F7/002 takes precedence)} · CPC title

• B22F3/105

  by using electric current {other than for infrared radiant energy}, laser radiation or plasma (B22F3/11 takes precedence){; by ultrasonic bonding (B22F3/115 takes precedence)} · CPC title