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Title:
PREPARATION METHOD FOR LITHIUM-CONTAINING MAGNESIUM/ALUMINUM-BASED COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/035774
Kind Code:
A1
Abstract:
A preparation method for a lithium-containing magnesium/aluminum-based composite material, implemented according to the following steps: (1) preparing a magnesium ingot or an aluminum ingot as a raw material, preparing metal lithium, and preparing a salt flux and a reinforcer; (2) heating the salt flux to prepare a salt flux melt, and adding the reinforcer into the salt flux melt to prepare a liquid-solid mixture; (3) pouring the liquid-solid mixture into a normal-temperature crucible and cooling to obtain a precursor; (4) preheating a smelting crucible and then placing the raw material to melt the raw material to form a raw material melt; (5) controlling the temperature of the raw material melt to be 973-993 K, adding the metal lithium while stirring, adding the precursor while stirring for mixing, and leaving standing after heating to 993-1013 K; and (6) after removing scums, decreasing the temperature of a composite material melt for casting. According to the method of the present invention, the process is simple, the cost is low, the strength of a light-alloy composite material can be greatly improved, a large light-alloy composite material structural part can be prepared, and automated production can be achieved, so that the present invention is significant for development of aerospace industry.

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Inventors:
LE QICHI (CN)
REN LIANG (CN)
LI XIAOQIANG (CN)
CHENG CHUNLONG (CN)
BAO LEI (CN)
MA BOWEN (CN)
Application Number:
PCT/CN2019/104189
Publication Date:
March 04, 2021
Filing Date:
September 03, 2019
Export Citation:
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Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
C22C23/00; C22C1/02; C22C1/03; C22C32/00; C22C47/08; C22C49/04; C22C49/14; C22C101/02; C22C101/14; C22C101/22; C22C111/00
Foreign References:
CN102392162A2012-03-28
US3955933A1976-05-11
CN1441074A2003-09-10
CN106834844A2017-06-13
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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