CN103436758B - A kind of preparation method of magnesium-aluminum-zinc-yttrium magnesium alloy semisolid slurry - Google Patents
A kind of preparation method of magnesium-aluminum-zinc-yttrium magnesium alloy semisolid slurry Download PDFInfo
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Abstract
A kind of preparation method of magnesium-aluminum-zinc-yttrium magnesium alloy semisolid slurry, it is characterized in that first magnesium-aluminum-zinc alloy being heated to 750 DEG C, add after 20min with aluminium-foil paper parcel little block magnesium-yttrium master alloy in liquation, ultrasonic 1min is evenly distributed in liquation to make rare earth again, then magnesium-aluminum-zinc-Yttrium rare earth magnesium alloy is put into heat treatment furnace, Isothermal treatment is carried out in ar gas environment, heat treatment temperature is 555 ~ 569 DEG C, soaking time 20min ~ 40min, takes out shrend and can obtain tiny spherical semi-solid state magnesium-rare earth slurry.The magnesium-aluminum-zinc that the present invention obtains-Yttrium rare earth magnesium alloy semi-solid homogeneous microstructure and rounding, and technique is simple, safe and reliable, easy to operate.
Description
Technical field
The invention belongs to technical field of material, be related specifically to a kind of method preparing semi solid slurry.
Background technology
Magnesium alloy is the lightest structural metallic materials, and its density is little, specific rigidity and specific tenacity high, and there is excellent heat conductivility, capability of electromagnetic shielding, damping capacity, machinability and damping performance.Therefore, magnesium alloy is called the green engineering material of 21 century, has important value and application prospect widely in aerospace, automotive industry and electronics and IT products field.
Along with the development of processing technology, semi-solid processing method is with its near-net-shape, good drip molding mechanical property, reduction energy consumption and improve the research hot topic that the advantages such as die life become metal current material processing technique.The still not system of the domestic and international research preparing magnesium alloy ingot for semi-solid isothermal heat-treatment at present, major part is confined to the observation of microstructure evolution, and the research for microequilibrium also seldom relates to.Semi-solid isothermal heat-treatment (Semi-SolidIsothermalHeat-Treatment is called for short SSIT) is a kind of method of the mid-90 in 20th century newly-developed, it eliminates the step of semisolid non-dendritic Slug preparing, but realize semisolid non-dendritic in post bake process before semi-solid-state shaping, its technological process is simple, with low cost, therefore more and more pays close attention to by people.
Summary of the invention
The object of this invention is to provide a kind of preparation method of magnesium-aluminum-zinc-yttrium (Mg-Al-Zn-Y) magnesium alloy semisolid slurry.
The present invention is achieved by the following technical solutions.
First magnesium-aluminum-zinc (Mg-Al-Zn) alloy is heated to 750 DEG C, add after 20min with aluminium-foil paper parcel little block magnesium-yttrium (Mg-Y) master alloy in liquation, ultrasonic 1min is evenly distributed in liquation to make rare earth again, then magnesium-aluminum-zinc-yttrium (Mg-Al-Zn-Y) magnesium-rare earth is put into heat treatment furnace, Isothermal treatment is carried out in ar gas environment, heat treatment temperature is 555 ~ 569 DEG C, soaking time 20min ~ 40min, takes out shrend and can obtain tiny spherical semi-solid state magnesium-rare earth slurry.
In magnesium-aluminum-zinc-yttrium of the present invention, shared by rare-earth yttrium, the massfraction of liquation total mass is 0.3%-0.9%.
The mass percent of magnesium-aluminum-zinc Aluminum in Alloy of the present invention is 8.3% ~ 9.7%, and the mass percent of zinc is 0.5% ~ 1.0%, and surplus is magnesium.
In magnesium of the present invention-yttrium master alloy, the mass percent of yttrium is 30%, and all the other are magnesium.
Technique effect of the present invention is: adopt magnesium-aluminum-zinc-yttrium-magnesium alloy microstructure of semisolid of obtaining of the present invention evenly and rounding, and technique is simple, safe and reliable, easy to operate.
Accompanying drawing explanation
Fig. 1 prepares magnesium-aluminum-zinc-yttrium-magnesium alloy semi-solid state microstructure under the embodiment of the present invention 1 condition.
Fig. 2 prepares magnesium-aluminum-zinc-yttrium-magnesium alloy semi-solid state microstructure under the embodiment of the present invention 2 condition.
Fig. 3 prepares magnesium-aluminum-zinc-yttrium-magnesium alloy semi-solid state microstructure under the embodiment of the present invention 3 condition.
Embodiment
The present invention will be described further by following examples.
Embodiment
.
In the present embodiment, first Mg-Al-Zn alloy, (mass percent of Al is 8.3%, the mass percent of Zn is 1.0%, surplus is Mg) be heated to 750 DEG C, add after 20min with aluminium-foil paper parcel little block Mg-Y master alloy in liquation, wherein the massfraction of liquation shared by Rare Earth Y is 0.3%, more ultrasonic 1min is evenly distributed in liquation to make rare earth.Isothermal treatment is carried out after pouring into billet be incubated 20min at 720 DEG C after.Thermal treatment temp is 560 DEG C, after soaking time 20min, takes out shrend and can obtain magnesium-rare earth semi solid slurry.Its semi-solid state microstructure as shown in Figure 1.
Embodiment
.
In the present embodiment, first Mg-Al-Zn alloy, (mass percent of Al is 9.7%, the mass percent of Zn is 0.5%, surplus is Mg) be heated to 750 DEG C, add after 20min with aluminium-foil paper parcel little block Mg-Y master alloy in liquation, wherein the massfraction of liquation shared by Rare Earth Y is 0.6%, more ultrasonic 1min is evenly distributed in liquation to make rare earth.Isothermal treatment is carried out after pouring into billet be incubated 20min at 720 DEG C after.Thermal treatment temp is 565 DEG C, after soaking time 30min, takes out shrend and can obtain magnesium-rare earth semi solid slurry.Its semi-solid state microstructure as shown in Figure 2.
Embodiment
.
In the present embodiment, first Mg-Al-Zn alloy, (mass percent of Al is 9%, the mass percent of Zn is 0.8%, surplus is Mg) be heated to 750 DEG C, add after 20min with aluminium-foil paper parcel little block Mg-Y master alloy in liquation, wherein the massfraction of liquation shared by Rare Earth Y is 0.9%, more ultrasonic 1min is evenly distributed in liquation to make rare earth.Isothermal treatment is carried out after pouring into billet be incubated 20min at 720 DEG C after.Thermal treatment temp is 569 DEG C, after soaking time 40min, takes out shrend and can obtain magnesium-rare earth semi solid slurry.Its semi-solid state microstructure as shown in Figure 3.
Claims (1)
1. the preparation method of a magnesium-aluminum-zinc-yttrium magnesium alloy semisolid slurry, it is characterized in that first magnesium-aluminum-zinc alloy being heated to 750 DEG C, add after 20min with aluminium-foil paper parcel little block magnesium-yttrium master alloy in liquation, ultrasonic 1min is evenly distributed in liquation to make rare earth again, then magnesium-aluminum-zinc-Yttrium rare earth magnesium alloy is put into heat treatment furnace, Isothermal treatment is carried out in ar gas environment, heat treatment temperature is 555 ~ 569 DEG C, soaking time 20min ~ 40min, takes out shrend and can obtain tiny spherical semi-solid state magnesium-rare earth slurry;
In described magnesium-aluminum-zinc-yttrium, shared by rare-earth yttrium, the massfraction of liquation total mass is 0.3%-0.9%;
The mass percent of described magnesium-aluminum-zinc Aluminum in Alloy is 8.3% ~ 9.7%, and the mass percent of zinc is 0.5% ~ 1.0%, and surplus is magnesium;
In described magnesium-yttrium master alloy, the mass percent of yttrium is 30%, and all the other are magnesium.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104152826B (en) * | 2014-07-17 | 2016-08-24 | 南昌大学 | A kind of heat treatment method of Mg-Al-Zn-Y magnesium-rare earth |
| CN105251951B (en) * | 2015-07-14 | 2017-09-08 | 南昌大学 | A kind of mischmetal induces the preparation method of pregnantization Al Si Cu alloy semi-solid slurries |
| CN107164712A (en) * | 2017-03-27 | 2017-09-15 | 南昌大学 | A kind of Semi-solid isothermal treatment method of the base block amorphous composites of Ti |
| CN109338132B (en) * | 2018-09-25 | 2021-01-05 | 南昌大学 | Preparation method of rare earth wrought magnesium alloy blank |
| CN111534731A (en) * | 2020-05-25 | 2020-08-14 | 珠海中科先进技术研究院有限公司 | Particle-reinforced medical magnesium-based composite material semi-solid billet and preparation method thereof |
| CN111663090A (en) * | 2020-05-25 | 2020-09-15 | 珠海中科先进技术研究院有限公司 | Preparation method of medical magnesium-based composite material |
| CN114214579B (en) * | 2021-12-17 | 2022-08-19 | 华东交通大学 | High-entropy alloy isothermal heat treatment method |
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| CN101285144A (en) * | 2008-05-05 | 2008-10-15 | 哈尔滨工程大学 | Magnesium alloy for semi-solid forming and preparation method of semi- solid blank |
| CN102443713A (en) * | 2011-12-12 | 2012-05-09 | 南昌大学 | Method for preparing Mg-Al-Zn-xLa rare earth magnesium alloy semi-solid slurry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101285144A (en) * | 2008-05-05 | 2008-10-15 | 哈尔滨工程大学 | Magnesium alloy for semi-solid forming and preparation method of semi- solid blank |
| CN102443713A (en) * | 2011-12-12 | 2012-05-09 | 南昌大学 | Method for preparing Mg-Al-Zn-xLa rare earth magnesium alloy semi-solid slurry |
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Effective date of registration: 20201012 Address after: 215600 station 0002, 20th floor, building A-1, shazhouhu science and Technology Innovation Park, Huachang Road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province (cluster registration) Patentee after: Youbiao e-commerce (Suzhou) Co., Ltd Address before: 999 No. 330031 Jiangxi province Nanchang Honggutan University Avenue Patentee before: Nanchang University |