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A kind of low-cost rapid corrosion magnesium alloy and preparation method thereof

A rapid corrosion and magnesium alloy technology, applied in the field of metal materials and processing, can solve the problems of long degradation time and high cost of magnesium alloy materials, and achieve the effects of reducing ingot segregation, high processing speed and good application prospects

Active Publication Date: 2021-12-10
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of high cost and long degradation time of current magnesium alloy materials, and provides a low-cost rapid corrosion magnesium alloy and its preparation method

Method used

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  • A kind of low-cost rapid corrosion magnesium alloy and preparation method thereof

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preparation example Construction

[0018] In a second aspect of the invention, a method for preparing low-cost rapid corrosion magnesium alloys, including the following steps: weighing pure magnesium ingots, pure aluminum ingots, Mg-CA intermediate alloy, Mg-Cu intermediate alloy; The protective gas is passed and smelted. Pouring into a ingot; the ingot is homogenized, cut into a corresponding size of the blank and peeled; heat extruded into a bar; the thermal extrusion condition is: extrusion temperature 350 -400 ° C, extrusion ratio of 4-10, extrusion speed 10-20 m / min; preferably extrusion temperature 350 ° C. The method of the present invention has a small extrusion ratio, large extrusion speed, and reduces equipment loss.

[0019] Further, the thermal extrusion conditions are: extrusion temperature of 350 ° C, extrusion ratio of 8, extrusion speed 20 m / min. Pre-extruding conditions were prepared under thermal extrusion conditions, solubility, tensile strength , Elongation and other properties are best. The...

Embodiment 1

[0024] Example 1 A low-cost rapid corrosion magnesium alloy

[0025] The low-cost rapid corrosion magnesium alloy is Mg-Al-Ca-Zn-Cu-Fe magnesium alloy, consisting of elements of the following mass: Al 13.00%, Zn 9.0% by weight, CA 0.4 wt%, Cu 2.0 wt% Fe3.0 wt%, the rest is MG and inevitable impurity elements. According to the ratio weighing material, the above raw materials use pure magnesium, pure aluminum ingot, Mg-25% CA intermediate alloy, MG-30% Cu intermediate alloy; in CO 2 + Sf 6 The mixed gas (volume ratio is 300: 1) under protective conditions, melting at 720 ° C, holding up 60 min, stirring Lomin, refined 20 min, refined after refining to 740 ° C for 30 min, poured into a ingot at 720 ° C.

[0026] Example 1 The ingot was taken at 520 ° C for homogenizing holding time 2 h, and the cooling mode was air cooling, then cut into the corresponding blank and peeled. The blank obtained by the previous step is extruded into a bar under the extrusion temperature of 350 ° C, and t...

Embodiment 2

[0027] Example 2 One low-cost rapid corrosion magnesium alloy

[0028] The low-cost rapid corrosion magnesium alloy is Mg-Al-Ca-Zn-Cu-Fe magnesium alloy, which consists of the following mass percentage of elements: Al 25.00% by weight, Zn 2.0% by weight, CA 0.2% by weight, Cu 3.0 wt% , Fe 1.5 wt%, the raw material is measured according to the ratio, the raw material is pure magnesium ingot, pure aluminum ingot, Mg-25% CA intermediate alloy, Mg-10% Zn intermediate alloy, MG-30% Cu intermediate alloy; in CO 2 + Sf 6 The mixed gas (volume ratio was 400: 1) under protective conditions, was melted at 740 ° C, holding up 40 min, stirred for 5 min, and refined 30 min, and then raised to 760 ° C for 40 min, and poured into a ingot at 740 ° C. The blank obtained by the previous step is extruded to a bar under the extrusion temperature of 400 ° C, the extrusion ratio of 8, extrusion speed is 20 m / min.

[0029]Example 2 ingot was taken at 500 ° C for homogenization treatment time 2 h, and ...

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Abstract

The invention discloses a low-cost rapid corrosion magnesium alloy and a preparation method thereof. The mass percentage of each element in the alloy is: Al: 3.0-25wt%, Ca: 0.20-1.0wt%, Zn: 2.0-15wt%, Cu: 1.20-3.0wt%, Fe: 1.50-5.0wt%, the balance is Mg and other impurity elements. The invention adopts the Mg-Al-Ca-Zn-Cu-Fe alloy to refine the grain size of the ingot through Ca, thereby reducing the segregation of the ingot, so that the Cu and Fe in the material are evenly distributed, and finely dispersed Mg is formed. 2 Cu and Mg 2 Fe, achieves the purpose of rapid corrosion and dissolution; at the same time, it weakens the basal texture of magnesium alloys, thereby improving the elongation of the material. In addition, Ca itself has flame retardant and anti-oxidation effects, which improves the ignition point of the alloy. Thus, the amount of shielding gas is reduced during the smelting process; no gas shielding is required during the homogenization process.

Description

Technical field [0001] The present invention belongs to the field of metal materials and processing, and in particular, the present invention relates to a low-cost rapid corrosive magnesium alloy and preparation methods and applications thereof. Background technique [0002] The development of science and technology has prompted global automation levels to increase, which leads to further increase in energy demand. Shale oil is one of the important directions of the development of the energy field in the current and future time, and the relevant mining technology has succeeded in the United States and gradually promoted to the world. According to relevant data statistics, my country's shale gas reserves ranks first in the world, and the shale oil reserves rank in the third world in the world, and future development prospects is broad. However, the relevant open technology is still in the starting point, and the mainstream technology is currently the multi-stage sliding segment fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C23/04C22C23/00C22C1/03C22F1/06
CPCC22C23/02C22C23/04C22C23/00C22C1/03C22F1/06
Inventor 刘宝胜董舸航张跃忠任晓霞柴跃生卫英慧
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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