Al-Ce Alloy Based Composites

Patent metadata

Field	Value
Publication number	US-2023235432-A1
Application number	US-202317803924-A
Country	US
Kind code	A1
Filing date	Jan 23, 2023
Priority date	Jan 26, 2022
Publication date	Jul 27, 2023
Grant date	—

Abstract

MMC’s comprising an Al—RE alloy-based matrix and ceramic, metal and/or intermetallic reinforcement particulates dispersed in the alloy matrix provide improved strength and ductility wherein the reinforcement particulates have a higher melting temperature than the matrix alloy.

First claim

We claim:

1 . A metal matrix composite comprising an Al—RE alloy matrix containing reinforcement particulates having a higher melting temperature than the matrix alloy wherein the metal matrix composite exhibits improved mechanical properties over a temperature range.

2 . The composite of claim 1 wherein the alloy matrix comprises about 1 to about 30 weight % RE material where RE material is selected from Ce, La, mischmetal, or any combination thereof, and balance aluminum (Al).

3 . The composite claim 2 wherein the alloy matrix comprises about 1 to about 20 weight % RE material.

4 . The composite of claim 3 wherein the alloy matrix comprises about 1 to about 18 weight % RE material.

5 . The composite of claim 2 wherein the alloy matrix includes one or more additional alloying elements X that include at least one of Mg, Cu, Mn, Ca, Fe, Ni, Zr, Zn, Si, and Ti in an amount of about 1 to about 14 weight %.

6 . The composite of claim 1 wherein Al content of the alloy matrix is controlled and represented by:
Al content = Al-(18 - α wt %) LRE - α wt% X; where α = total weight (wt)) % of additional alloying elements X between 1 to12 weight % and where LRE is Ce or La or both Ce and La.

6 . The composite of claim 1 wherein the reinforcement particulates are present in the alloy matrix in an amount of about 1 to about 40 volume %.

7 . The composite of claim 1 wherein the reinforcement particulates comprise at least one of ceramic particulates, metal particulates, and intermetallic particulates having a higher melting temperature than the matrix alloy.

8 . The composite of claim 7 wherein the reinforcement particulates comprise at least one of Al 2 O 3 , Ni 3 Al, ZrO 2 , SiC, B 4 C, CeO 2 , La 2 O 3 , and YSZ having a melting temperature higher than the matrix alloy.

9 . The composite of claim 7 wherein the reinforcement particulates have a minimum average dimension that is in the range of 0.01 microns to 250 microns.

10 . The composite of claim 1 having improved tensile strength as compared to the matrix alloy devoid of the reinforcement particles.

11 . The composite of claim 1 which is at least one of a cast, extruded, thermal sprayed, cold sprayed, additive manufactured, and electrodeposited composite.

12 . A method of making the metal matrix composite of claim 1 wherein the reinforcement particulates are added ex-situ in the alloy matrix or are formed in-situ in the alloy matrix.

Assignees

• Univ Iowa State Res Found Inc
• L Livermore Nat Security Llc
• Ut Battelle Llc
• Eck Ind Inc

Inventors

• Ott Ryan T
• Meng Fanqiang
• Mccall Scott K
• Henderson Hunter B
• Rios Oriando
• Sims Zachary C
• Weiss David

Classifications

• C22C21/02

  with silicon as the next major constituent · CPC title

• C22F1/04

  of aluminium or alloys based thereon · CPC title

• C22C21/12

  with copper as the next major constituent · CPC title

• C22C21/08

  with silicon · CPC title

• C22C32/0036 Primary

  Matrix based on Al, Mg, Be or alloys thereof · CPC title