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CN-121976071-A - Production process of aviation carbon magnesium gold composite material

CN121976071ACN 121976071 ACN121976071 ACN 121976071ACN-121976071-A

Abstract

The invention belongs to the technical field of aviation carbon magnesium gold composite materials, and discloses a production process of an aviation carbon magnesium gold composite material, which is researched and developed, breaks through the technical monopoly of the global material industry for melting alloying of high-melting-point/nanoscale carbon fiber-based, titanium-based and boron-based elements and magnesium-based low-melting-point substrates, realizes the technical revolution from powder pressing to direct smelting, and is a milestone result in the field of magnesium-based alloy materials. The aluminum alloy has the advantages of light weight, high strength, high toughness, corrosion resistance and casting suitability, can comprehensively replace traditional high-end aluminum alloys (AZ 7075, 6061, ADC12 and the like), common magnesium alloys and light-weight stainless steel in the fields of aerospace, military industry, new energy automobiles, high-end equipment manufacturing and the like, solves the mass production problem and cost pain point of the traditional process of the industry, realizes full coverage of the whole field in the downstream application scene, and has unlimited development potential.

Inventors

  • WANG QINGMING
  • WANG YONGZHI

Assignees

  • 湖北省沪锌材料有限公司

Dates

Publication Date
20260505
Application Date
20260311

Claims (10)

  1. 1. A production process of a aviation carbon magnesium gold composite material is characterized by comprising the following steps of S1, smelting at a low temperature, and putting an aviation carbon magnesium gold composite material matrix raw material, a carbon aluminum intermediate alloy, a titanium boron intermediate alloy and a carbon material subjected to surface treatment and ultrasonic dispersion into smelting equipment for low-temperature smelting in an inert gas atmosphere, wherein the smelting temperature is controlled to be 650-750 ℃, so that a homogeneously fused alloy melt is prepared.
  2. 2. The process for producing the aviation carbon magnesium gold composite material according to claim 1, wherein the carbon material is one or more of graphite powder and carbon fiber.
  3. 3. The process for producing the aviation carbon magnesium gold composite material according to claim 1, wherein the carbon material is a mixture of carbon fiber graphite powder and carbon fibers, the carbon material is subjected to ultrasonic dispersion after surface modification treatment, and the surface modification treatment is coating or grafting treatment which is suitable for the type of the carbon material.
  4. 4. The process for producing the aviation carbon magnesium gold composite material according to claim 1, wherein in the step S1, the aviation carbon magnesium gold composite material comprises, by weight, 60-80 parts of magnesium, 25-35 parts of aluminum, 3-8 parts of carbon aluminum intermediate alloy, 3-8 parts of titanium boron intermediate alloy, 0.3-2 parts of carbon boron compound, 0.05-0.5 part of rare earth purifying element and 0.05-0.5 part of carbon material, wherein the rare earth purifying element is one or two of scandium and yttrium.
  5. 5. The process for producing the aviation carbon magnesium gold composite material according to claim 4, wherein in the step S1, the aviation carbon magnesium gold composite material comprises, by weight, 65-75 parts of magnesium, 28-32 parts of aluminum, 4-6 parts of carbon aluminum intermediate alloy, 4-6 parts of titanium boron intermediate alloy, 0.8-1 part of carbon boron compound, 0.1-0.3 part of rare earth purifying element and 0.1-0.3 part of carbon material.
  6. 6. The process for producing the aviation carbon magnesium gold composite material is characterized in that in the step S1, magnesium and aluminum are put into smelting equipment, heated to 650-750 ℃ for melting and uniformly stirred, a titanium boron intermediate alloy, a mixture of a carbon boron compound and a smelting agent and a rare earth purifying element are sequentially added, the mixture is stirred for a period of time in a heat preservation mode, the carbon aluminum intermediate alloy and a carbon material subjected to surface treatment and ultrasonic dispersion are added, and the heat preservation and stirring are continued for 4-12 hours, so that a homogeneously fused alloy melt is obtained.
  7. 7. The process for producing the aviation carbon magnesium-gold composite material according to claim 6, wherein in the step S1, the smelting agent is a special smelting agent for magnesium aluminum.
  8. 8. The process for producing the aviation carbon magnesium gold composite material according to any one of claims 1 to 7, wherein in the step S1, inert gas is high-purity argon, smelting equipment is an intermediate frequency induction smelting furnace, and a crucible used for smelting is made of high-purity graphite.
  9. 9. The production process of the avionic magnesium-gold composite material according to claim 1, which is characterized by comprising the step S2 of molding, wherein the molding temperature is precisely controlled, and the casting temperature is kept consistent with the smelting temperature.
  10. 10. The production process of the avionic magnesium-gold composite material is characterized in that the grain size of the prepared avionic magnesium-gold composite material is 20m, carbon boron compound nano phases are dispersed and distributed in situ, carbon fibers and graphite powder form three-dimensional network distribution, and the alloy core performance indexes are that the tensile strength is 610MPa, the bending strength is 670MPa, the elongation is 12.0%, the impact toughness is 18J/cm, the Vickers hardness is 185HV, and the density is 1.85g/cm.

Description

Production process of aviation carbon magnesium gold composite material Technical Field The invention belongs to the technical field of aviation carbon magnesium gold composite materials, and particularly relates to a production process of an aviation carbon magnesium gold composite material. Background The high-performance light magnesium aluminum-based composite structural material is a core base material for light weight upgrading of high-end equipment, the melting point of a carbon-based material (graphite powder and carbon fiber) exceeds 3000 ℃, and the super-large melting point difference exists between the carbon-based material and a magnesium aluminum substrate with the melting point of only about 600 ℃, so that effective infiltration of carbon is realized at low temperature, and the carbon-based composite structural material becomes a long-term non-breakthrough world-level problem in the field of global materials. The combination of carbon elements and a magnesium aluminum matrix is realized by adopting a powder pressing method in the domestic and foreign industries at present, the technical breakthrough of low-temperature smelting carburization does not exist, the conventional magnesium alloy has the fatal defects of easy ignition, extremely poor corrosion resistance and easy surface scratch and breakage, the common magnesium aluminum alloy has low tensile and bending strength, low rigidity and flexibility and insufficient elongation, the conventional high-end aluminum alloy (such as A356) and die-casting aluminum alloy (such as ADC 12) have the advantages of adequate strength, but the elongation and light weight performance are poor, and the titanium aluminum alloy has certain corrosion resistance, but the comprehensive performance still cannot meet the severe requirements of the high-end fields such as aerospace and the like. Meanwhile, titanium aluminum intermediate alloy is mostly adopted in the traditional process, and the fusion suitability is poor when the titanium aluminum intermediate alloy is matched with carbon materials for preparation, and the complex pain points of easy agglomeration of nano powder, high-temperature oxidation burning loss of magnesium aluminum, low production efficiency, low mass production qualification rate and the like are accompanied, so that the complex pain points are difficult to adapt to the multiple core requirements of high-end fields on high strength, high toughness, high corrosion resistance, light weight and controllable process of the materials. In order to break through the technical bottleneck, the invention initiates a low-temperature smelting carburization process for the first time, optimizes a master alloy system and prepares the aviation carbon magnesium gold composite material with the global leading comprehensive performance. Disclosure of Invention The invention aims to provide an avionic magnesium-gold composite material and a production process thereof, which are used for initiating the world-grade problem of ultra-large melting point differential infiltration by a low-temperature smelting carburization technology, taking graphite powder and carbon fiber as carbon aluminum intermediate alloy to prepare a core raw material, replacing the titanium aluminum intermediate alloy to be titanium boron intermediate alloy, accurately adding rare earth purifying elements, realizing the homogeneous fusion and in-situ dispersion distribution of each reinforcing phase and a magnesium aluminum matrix by means of core means such as accurate temperature control, long-time heat preservation stirring, process accurate regulation and control and the like, thoroughly solving the fatal defects of easy firing, easy corrosion and easy breakage of the traditional magnesium alloy, simultaneously enabling the material to have ultra-high tensile bending strength, excellent rigidity and flexibility, high elongation, extremely light weight, ultra-strong corrosion resistance, controllable process and strong mass production, meeting the large-scale application requirements of high-end fields such as aerospace, military industry and the like, and creating a single global high-performance light composite structure material. The technical aim of the invention is achieved by the following technical scheme that the production process of the avionic magnesium-gold composite material is characterized by comprising the following steps of S1, smelting at low temperature, and putting a avionic magnesium-gold composite material matrix raw material, a carbon aluminum intermediate alloy, a titanium boron intermediate alloy and a carbon material subjected to surface treatment and ultrasonic dispersion into smelting equipment for low-temperature smelting in an inert gas atmosphere, wherein the smelting temperature is controlled to be 650-750 ℃, so as to prepare a homogeneously fused alloy melt. According to the technical scheme, magnesium and aluminum substrates are put into smelting equ