# US 10,370,745 B2 · Magnesium-zinc-manganese-tin-yttrium alloy and method for making the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,745 B2 - Document ID: US10370745B2 - Status: Granted - Kind: B2 - Application number: 14/449,449 - Filed: 2014-08-01 - Published: 2016-02-04 - Granted: 2019-08-06 - Earliest claimed: 2014-08-01 - Assignees: The Boeing Company - Applicants: The Boeing Company - Inventors: Fusheng Pan; Dingfei Zhang; Guangshan Hu; Xia Shen; Jingren Dong; Sensen Chai; Daliang Yu; Fei Guo; Luyao Jiang - Web page: https://patentgrep.com/patent/US10370745B2 ## CPC - C22C 23/04: with zinc or cadmium as the next major constituent - B21C 23/002: {Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences} - C22F 1/06: of magnesium or alloys based thereon - C22C: ALLOYS (treatment of alloys C21D, C22F) - B21C: MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL - C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00) ## Abstract A magnesium alloy including about 2 percent by weight to about 8 percent by weight zinc, about 0.1 percent by weight to about 3 percent by weight manganese, about 1 percent by weight to about 6 percent by weight tin, about 0.1 percent by weight to about 4 percent by weight yttrium, and magnesium. ## Claims ### Claim 1 An extruded wrought magnesium alloy comprising: about 2 percent by weight to about 8 percent by weight zinc; about 0.1 percent by weight to about 3 percent by weight manganese; about 1 percent by weight to about 6 percent by weight tin; about 0.1 percent by weight to about 4 percent by weight yttrium; and balance magnesium and impurities, the extruded wrought magnesium alloy having an as-extruded ultimate tensile strength of at least 325 MPa and an as-extruded elongation of at least 10.4%. ### Claim 2 (depends on 1) The extruded wrought magnesium alloy of claim 1 wherein impurities comprise at most about 0.15 percent by weight of said magnesium alloy. ### Claim 3 (depends on 1) The extruded wrought magnesium alloy of claim 1: wherein said zinc is at a concentration of about 5 percent by weight to about 6.3 percent by weight; wherein said manganese is at a concentration of about 0.6 percent by weight to about 1.1 percent by weight; wherein said tin is at a concentration of about 2 percent by weight to about 4.4 percent by weight; and wherein said yttrium is at a concentration of about 0.1 percent by weight to about 1.3 percent by weight. ### Claim 4 (depends on 1) The extruded wrought magnesium alloy of claim 1: wherein said zinc is at a concentration of about 5.7 percent by weight; wherein said manganese is at a concentration of about 0.9 percent by weight; wherein said tin is at a concentration of about 4.4 percent by weight; and wherein said yttrium is at a concentration of about 0.5 percent by weight. ### Claim 5 (depends on 1) The extruded wrought magnesium alloy of claim 1 wherein said zinc is present at a concentration of about 5 percent by weight to about 6.3 percent by weight of said magnesium alloy. ### Claim 6 (depends on 1) The extruded wrought magnesium alloy of claim 1 wherein said manganese is present at a concentration of about 0.6 percent by weight to about 1.1 percent by weight of said magnesium alloy. ### Claim 7 (depends on 1) The extruded wrought magnesium alloy of claim 1 wherein said tin is present at a concentration of about 2 percent by weight to about 4.4 percent by weight of said magnesium alloy. ### Claim 8 (depends on 1) The extruded wrought magnesium alloy of claim 1 wherein said yttrium is present at a concentration of about 0.1 percent by weight to about 1.3 percent by weight of said magnesium alloy. ### Claim 9 (depends on 1) The extruded wrought magnesium alloy of claim 1 wherein said yttrium is at a concentration of 0.5 percent by weight to about 4 percent by weight. ### Claim 10 (depends on 1) The extruded wrought magnesium alloy of claim 1, wherein the extruded wrought magnesium alloy consists of: about 2 percent by weight to about 8 percent by weight zinc; about 0.1 percent by weight to about 3 percent by weight manganese; about 1 percent by weight to about 6 percent by weight tin; about 0.1 percent by weight to about 4 percent by weight yttrium; and balance magnesium and impurities. ### Claim 11 (depends on 10) The extruded wrought magnesium alloy of claim 10, wherein the extruded wrought magnesium alloy consists of: about 5 percent by weight to about 6.3 percent by weight zinc; about 0.6 percent by weight to about 1.1 percent by weight manganese; about 2 percent by weight to about 4.4 percent by weight tin; about 0.1 percent by weight to about 1.3 percent by weight yttrium; and balance magnesium and impurities. ### Claim 12 (depends on 10) The extruded wrought magnesium alloy of claim 10: wherein said zinc is at a concentration of about 5.7 percent by weight; wherein said manganese is at a concentration of about 0.9 percent by weight; wherein said tin is at a concentration of about 4.4 percent by weight; and wherein said yttrium is at a concentration of about 0.5 percent by weight. ### Claim 13 (depends on 10) The extruded wrought magnesium alloy of claim 10 wherein impurities are at most about 0.15 percent by weight of said magnesium alloy. ### Claim 14 (depends on 1) A method for making a magnesium alloy comprising steps of: forming a molten mass comprising the magnesium alloy composition of claim 1; cooling said molten mass to form a solid mass; annealing said solid mass to form an annealed mass; and extruding said annealed mass. ### Claim 15 (depends on 14) The method of claim 14 wherein said molten mass comprises at most about 0.15 percent by weight of said impurities. ### Claim 16 (depends on 14) The method of claim 14 wherein said forming step is performed in a vacuum induction furnace. ### Claim 17 (depends on 14) The method of claim 14 wherein said molten mass is under an inert gas blanket during said forming step. ### Claim 18 (depends on 14) The method of claim 14 wherein said annealing step comprises maintaining said solid mass at a temperature ranging from about 410° C. to about 430° C. for about 10 hours to about 14 hours. ### Claim 19 (depends on 14) The method of claim 14 wherein said extruding step is performed at a temperature ranging from about 350° C. to about 370° C. ### Claim 20 (depends on 19) The method of claim 19 wherein said extruding step comprises a speed ranging from about 1 m/min to about 2 m/min. ### Claim 21 (depends on 14) The method of claim 14 further comprising cooling said extruded, annealed mass. ### Claim 22 (depends on 14) The method of claim 14 wherein: said zinc is at a concentration of about 5 percent by weight to about 6.3 percent by weight; said manganese is at a concentration of about 0.6 percent by weight to about 1.1 percent by weight; said tin is at a concentration of about 2 percent by weight to about 4.4 percent by weight; and said yttrium is at a concentration of about 0.1 percent by weight to about 1.3 percent by weight. ### Claim 23 (depends on 14) The method of claim 14 wherein: said zinc is at a concentration of about 5.7 percent by weight; said manganese is at a concentration of about 0.9 percent by weight; said tin is at a concentration of about 4.4 percent by weight; and said yttrium is at a concentration of about 0.5 percent by weight.