Magnesium-lithium alloy, method of manufacturing magnesium-lithium alloy, aircraft part, and method of manufacturing aircraft part

Patent metadata

Field	Value
Publication number	US-2016281200-A1
Application number	US-201615062507-A
Country	US
Kind code	A1
Filing date	Mar 7, 2016
Priority date	Mar 23, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

According to one implementation, a magnesium-lithium alloy in which at least lithium is added to magnesium is manufactured by giving a strain to a magnesium-lithium alloy workpiece, after a solution treatment, and progressing an aging of the magnesium-lithium alloy workpiece without a heat treatment. The strain is given by a cold working. The aging is progressed after giving the strain. Further, according to one implementation, an aircraft part includes the above-mentioned magnesium-lithium alloy as a material. Further, according to one implementation, a method of manufacturing an aircraft part includes processing the above-mentioned magnesium-lithium alloy.

First claim

What is claimed is:

1 . A magnesium-lithium alloy in which at least lithium is added to magnesium,
wherein the magnesium-lithium alloy is manufactured by giving a strain to a magnesium-lithium alloy workpiece, after a solution treatment, and progressing an aging of the magnesium-lithium alloy workpiece without a heat treatment, the strain being given by a cold working, the aging being progressed after giving the strain.

2 . The magnesium-lithium alloy according to claim 1 ,
wherein the magnesium-lithium alloy contains at least one of aluminum, calcium and zinc, the at least one in addition to the lithium being added to the magnesium.

3 . The magnesium-lithium alloy according to claim 1 ,
wherein a content of the lithium is not less than 10.5 weight percent and not more than 16.0 weight percent.

4 . An aircraft part including the magnesium-lithium alloy according to claim 1 as a material.

5 . A method of manufacturing an aircraft part by processing the magnesium-lithium alloy according to claim 1 .

6 . A method of manufacturing an aircraft part comprising:
giving a strain to a magnesium-lithium alloy after a solution treatment, by a cutting work or a shot peening as a cold working; progressing an aging of the magnesium-lithium alloy after giving the strain, without a heat treatment; and manufacturing the aircraft part by processing the magnesium-lithium alloy after a progress of the aging.

7 . A method of manufacturing a magnesium-lithium alloy comprising:
performing a solution treatment of a magnesium-lithium alloy workpiece; giving a strain to the magnesium-lithium alloy workpiece after the solution treatment, by a cold working; and progressing an aging of the magnesium-lithium alloy workpiece after giving the strain, without a heat treatment.

8 . The method of manufacturing the magnesium-lithium alloy according to claim 7 ,
wherein a period of the aging is determined to make an elapsed time after the solution treatment be not less than 1000 hours.

9 . The method of manufacturing the magnesium-lithium alloy according to claim 7 ,
wherein the strain is given at a rate of not less than 100 mm per minute.

10 . The method of manufacturing the magnesium-lithium alloy according to claim 7 ,
wherein the strain is given to make an amount of the strain be not less than 0.5 percent and not more than 1.5 percent.

11 . The magnesium-lithium alloy according to claim 2 ,
wherein a content of the lithium is not less than 10.5 weight percent and not more than 16.0 weight percent.

12 . An aircraft part including the magnesium-lithium alloy according to claim 2 as a material.

13 . An aircraft part including the magnesium-lithium alloy according to claim 3 as a material.

14 . An aircraft part including the magnesium-lithium alloy according to claim 11 as a material.

15 . A method of manufacturing an aircraft part by processing the magnesium-lithium alloy according to claim 2 .

16 . A method of manufacturing an aircraft part by processing the magnesium-lithium alloy according to claim 3 .

17 . The method of manufacturing the magnesium-lithium alloy according to claim 8 ,
wherein the strain is given at a rate of not less than 100 mm per minute.

18 . The method of manufacturing the magnesium-lithium alloy according to claim 8 ,
wherein the strain is given to make an amount of the strain be not less than 0.5 percent and not more than 1.5 percent.

19 . The method of manufacturing the magnesium-lithium alloy according to claim 9 ,
wherein the strain is given to make an amount of the strain be not less than 0.5 percent and not more than 1.5 percent.

20 . The method of manufacturing the magnesium-lithium alloy according to claim 17 ,
wherein the strain is given to make an amount of the strain be not less than 0.5 percent and not more than 1.5 percent.

Assignees

• Fuji Heavy Ind Ltd

Inventors

• Miura Ayako

Classifications

• C22C23/00

  Alloys based on magnesium · CPC title

• B62D29/008

  predominantly of light alloys, e.g. extruded · CPC title

• C22F1/06 Primary

  of magnesium or alloys based thereon · CPC title