Mg-Al-Zn system magnesium alloy material modified by nano-diamonds and used for casting automobile parts and manufacturing method of Mg-Al-Zn system magnesium alloy
A nano-diamond and auto parts technology, applied in the field of magnesium alloy material preparation, can solve the problems of low material utilization, poor high-temperature creep of magnesium alloy, and environmental corrosion resistance, and achieve cold and heat fatigue resistance and high temperature wear resistance Excellent performance, improved processing performance and use performance, and improved mechanical properties
Inactive Publication Date: 2016-02-17
TIANCHANG XINGYU CASTING CO LTD
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Problems solved by technology
[0002] Magnesium alloy materials are widely used in the field of auto parts manufacturing, and the market demand is also gradually rising. Magnesium alloy materials have low mass density, good vibration damping performance, high specific strength and specific stiffness, low melting point, good casting performance, and more use of automobiles. Lightweight and other advantages, although magnesium alloy materials have these advantages, the application of magnesium alloy materials in automobiles is still very limited at present. The main reasons for this phenomenon are: magnesium alloys have poor high temperature creep and are not resistant to environmental corrosion; High performance magnesium alloy production cost
[0003] At present, the types of magnesium alloys mainly include Mg-Al-Zn series high-toughness alloys, Mg-Al series heat-resistant alloys, Mg-Zn series heat-resistant alloys, Mg-Zn-RE, Mg-RE, etc., among which Mg-Al There are the most types of heat-resistant alloys, and Mg-Al series alloys with different performance characteristics can be obtained by adding different element ratios. Although these alloy materials have their unique advantages, they also have some defects. The existing problems mainly focus on production costs. The practical application is still limited in terms of relatively high and low material utilization rate. Therefore, future research will mainly focus on replacing rare earth elements with some other elements to reduce production costs and more efficiently integrate the strengthening effect of each element to inhibit Adverse effects of a single element, improve a single production method, and obtain alloy materials with better comprehensive properties
Method used
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Embodiment
[0011] The magnesium alloy material of this embodiment is made of the following raw materials by weight: Al powder 5.5wt.%, Zn powder 2wt.%, Be powder 0.1wt.%, Si0.02wt.%, Mn powder 1.5wt.%, nano 2wt.% diamond, 0.01wt.% polyvinylpyrrolidone, appropriate amount of absolute ethanol, impurity elements ≤ 0.01wt.%, and Mg powder as the balance.
[0012] Its preparation method is:
[0013] (1) First put polyvinylpyrrolidone into an appropriate amount of absolute ethanol to prepare polyvinylpyrrolidone absolute ethanol, then put in nano-diamonds, stir and disperse at high speed to completely disperse the nano-diamonds in the solution, then put in Mg powder, continue to stir and disperse After 30 minutes, the mixed slurry was put into a ball mill and ground and stirred for 40 minutes, and finally the obtained slurry was dried to completely remove absolute ethanol, and the obtained mixed powder was set aside, wherein the volume ratio of absolute ethanol to Mg powder was 1.5:1;
[0014...
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Abstract
The invention relates to the technical field of magnesium alloy preparing, in particular to an Mg-Al-Zn system magnesium alloy material modified by nano-diamonds and used for casting automobile parts and a manufacturing method of the Mg-Al-Zn system magnesium alloy material. The material belongs to a Mg-Al-Zn system high-heat-resistant alloy, elements such as Mn, Be and Si are mixed in the material, the mechanical performance of the alloy material is further improved, and heat resistance is better. In addition, a polyvinylpyrrolidone absolute ethyl alcohol solution serves as a medium, the nano-diamonds are scattered in the medium, a mixture and Mg powder are then mixed and ground, and therefore the nano-diamonds are evenly scattered in the Mg powder in a wrapping manner. In the following smelting process, the Mg powder is more sufficiently mixed with other metal elements, the efficient and stable modification effect is achieved, the prepared magnesium alloy material is excellent in cold and heat fatigue resistance and high-temperature and abrasion resistance, and the machining performance and the use performance are both improved when the material is used for manufacturing the automobile parts.
Description
technical field [0001] The invention relates to the technical field of magnesium alloy material preparation, in particular to a nano-diamond-modified Mg-Al-Zn series magnesium alloy material used for casting auto parts and a preparation method thereof. Background technique [0002] Magnesium alloy materials are widely used in the field of auto parts manufacturing, and the market demand is also gradually rising. Magnesium alloy materials have low mass density, good vibration damping performance, high specific strength and specific stiffness, low melting point, good casting performance, and more use of automobiles. Lightweight and other advantages, although magnesium alloy materials have these advantages, the application of magnesium alloy materials in automobiles is still very limited at present. The main reasons for this phenomenon are: magnesium alloys have poor high temperature creep and are not resistant to environmental corrosion; The production cost of performance magne...
Claims
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IPC IPC(8): C22C23/02C22C26/00C22C1/02C22C1/10
CPCC22C23/02C22C1/02C22C1/1005C22C26/00
Inventor 徐乐高焦培峰徐大兵
Owner TIANCHANG XINGYU CASTING CO LTD