Systems and methods for tailoring coefficients of thermal expansion between extreme positive and extreme negative values

Patent metadata

Field	Value
Publication number	US-11486016-B2
Application number	US-202016733486-A
Country	US
Kind code	B2
Filing date	Jan 3, 2020
Priority date	Jun 14, 2013
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

Systems and methods disclosed herein relate to the manufacture of metallic material with a thermal expansion coefficient in a predetermined range, comprising: deforming, a metallic material comprising a first phase and a first thermal expansion coefficient. In response to the deformation, at least some of the first phase is transformed into a second phase, wherein the second phase comprises martensite, and orienting the metallic material in at least one predetermined orientation, wherein the metallic material, subsequent to deformation, comprises a second thermal expansion coefficient, wherein the second thermal expansion coefficient is within a predetermined range, and wherein the thermal expansion is in at least one predetermined direction. In some embodiments, the metallic material comprises the second phase and is thermo-mechanically deformed to orient the grains in at least one direction.

First claim

What is claimed is:

1. A method of manufacturing a metallic material with a tailored thermal expansion coefficient in a selected range, comprising:
plastically deforming said metallic material substantially comprising a first phase and a first thermal expansion coefficient by applying tension; and
transforming, in response to said tension and said plastic deforming, at least some of said first phase into a second phase; and
orienting said metallic material in the direction of said tension;
wherein:
said metallic material comprises an alloy made substantially of a first phase capable of martensitic transformation;
said second phase comprises martensite;
said plastic deforming comprises mechanical deformation under said tension;
said metallic material, subsequent to said tensile plastic deformation, comprises a second thermal expansion coefficient; and
said second thermal expansion coefficient is within a selected range; and
said second thermal expansion coefficient quantifies thermal expansion of said metallic material in at least said tensile direction.

2. The method of claim 1 , wherein said selected range of said tailored thermal expansion coefficient is between −150×10 −6 K −1 and +500×10 −6 K −1 .

3. The method of claim 1 , further comprising applying said tension in a second direction, wherein said plastic deforming results in a third thermal expansion coefficient within a selected range of said metallic material that is in at least said second direction in said metallic material.

4. The method of claim 1 , wherein said metallic material comprises at least one of:
NiTi, NiFeGa, TiNb, TiMo, CuMnAlNi, CuMnAl, CuZnAl, CuNiAl, FeNiCoTi, CuAlBe, or is at least one of:
characterized by a general formula NiTiX, wherein X is at least one of Pd, Hf, Zr, Al, Pt, Au;
characterized by a general formula NiMnX, wherein X is at least one of Ga, In, Sn, Al, Sb;
characterized by a general formula NiCoMnX, wherein X is at least one of Ga, In, Sn, Al, Sb;
characterized by a general formula TiNbX, wherein X is at least one of Al, Sn, Ta, Zr, Mo, Hf, V, O;
characterized by a general formula CoNiX, wherein X is at least one of Al, Ga, Sn, Sb, In;
characterized by a general formula TiTaX, wherein X is at least one of Al, Sn, Nb, Zr, Mo, Hf, V, O;
characterized by a general formula FeMnX, wherein X is at least one of Ga, Mn, Ni, Co, Al, Ta, Si;
characterized by a general formula FeNiCoAlX, wherein X is at least one of Ta, Ti, Nb, Cr, W;
and combinations thereof.

5. The method of claim 1 , wherein said tensile plastic deformation is achieved by at least one of: hot-rolling; cold-rolling; wire drawing; bi-axial tension; conformal processing; bending; drawing; swaging; conventional extrusion; equal channel angular extrusion; precipitation heat treatment under stress; monotonic tension processing; monotonic torsion processing; cyclic thermal training under stress; and combinations thereof.

6. The method of claim 1 , wherein said tensile plastic deformation of said metallic material further comprises texturing said metallic material in a direction comprising at least one of a [111], a [100], or a [001] direction.

Assignees

• Texas A & M Univ Sys

Inventors

• Monroe James Alan
• Karaman Ibrahim
• Arroyave Raymundo

Classifications

• C21D8/06

  during manufacturing of rods or wires · CPC title

• C21D8/02 Primary

  during manufacturing of plates or strips (C21D8/12 takes precedence) · CPC title

• C22F1/10 Primary

  of nickel or cobalt or alloys based thereon · CPC title

• C21D2201/01

  Shape memory effect · CPC title

• C22F1/08

  of copper or alloys based thereon · CPC title