Mg—Gd—Y—Zn—Zr alloy and process for preparing the same

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United States of America Patent

PATENT NO 11085105
APP PUB NO 20200102631A1
SERIAL NO

16468238

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Abstract

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The present disclosure discloses a Mg—Gd—Y—Zn—Zr alloy which, in embodiments, includes high strength, toughness, corrosion resistance and anti-flammability. The disclosure includes a process for preparation thereof. Components and mass percentages in the Mg—Gd—Y—Zn—Zr alloy are: 3.0%≤Gd≤9.0%, 1.0%≤Y≤6.0%, 0.5%≤Zn≤3.0%, 0.2%≤Zr≤1.5%, the balance being Mg and inevitable impurities. The process for preparation thereof comprises: adding pure Mg into a smelting furnace for heating, then introducing mixed gases of CO2 and SF6 into the furnace for protection; adding other raw materials in sequence when the pure Mg is completely melted; preparing an ingot; conducting a homogenization treatment on the ingot prior to extrusion; conducting an aging treatment on the extruded alloy. The present disclosure includes a wrought magnesium alloy having both superior overall performances, good fracture toughness, corrosion resistance and anti-flammability, with a small amount of rare earth element by adjusting the proportion of the alloy elements and by conventional casting, extrusion and heat treatment processes.

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Patent Owner(s)

  • THE BOEING COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chi, Yuanqing Harbin, CN 2 0
Jiang, Hansi Harbin, CN 7 35
Qiao, Xiaoguang Harbin, CN 2 0
Sun, Ding Harbin, CN 4 0
Zheng, Mingyi Harbin, CN 3 0

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