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Method for in-situ reaction TiB2 particle enhancement spray forming of zinc aluminum alloy

A technology of spray forming and in-situ reaction, applied in the field of in-situ reaction TiB2 particle reinforced spray-formed zinc-aluminum alloy, can solve the problems of high material preparation cost, uneven distribution, low utilization rate of reinforcing particles, etc., and achieve good high temperature performance Effect

Inactive Publication Date: 2015-12-23
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest disadvantage of this type of method is the low utilization rate of reinforcing particles, uneven distribution, and high cost of material preparation. In-situ reaction spray deposition is a material preparation process that combines in-situ reaction and spray deposition. Finished in the alloy melt in the melting chamber, followed by subsequent atomized spray deposition

Method used

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  • Method for in-situ reaction TiB2 particle enhancement spray forming of zinc aluminum alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Using the same non-vacuum spray forming equipment as in ZL03119605.5, when utilizing spray forming rapid solidification technology to prepare Zn-30Al-1Cu (weight percentage, the same below) alloy, the Al, Ti, B powders are mixed according to the ratio of 1:3:6 Prefabricated blocks pressed in proportion to weight. When Zn, Al, Cu raw materials are alloyed to 1000K to form a melted alloy melt, the Al-Ti-B prefabricated block of 3% (weight percentage, the same below) is added in the alloy melt melted, wait for After the in-situ reaction of the powder block under high temperature, nitrogen is used as the atomizing gas, the atomization pressure is 0.65MPa, the deposition distance is 400mm, the scanning frequency of the atomizer is 3Hz, and the descending speed of the receiving system is 20mm / min. The temperature of the draft tube is 1000K, and the in-situ TiB is obviously formed in the prepared Zn-30Al-1Cu alloy structure 2 particles. figure 1 In-Situ Reaction Injection Fo...

Embodiment 2

[0018] Using the same non-vacuum spray forming equipment as in ZL03119605.5, when using spray forming rapid solidification technology to prepare Zn-32Al-1.2Cu alloy, the prefabricated block is pressed with Al, Ti, B powder in a weight ratio of 1:3:6 . When Zn, Al, Cu raw materials are alloyed to 973K to form the alloy melt of melting, the Al-Ti-B prefabricated block of 5% (percentage by weight, the same below) is added in the alloy melt of melting, wait for the alloy melt in the melt After the in-situ reaction of the powder block under high temperature, nitrogen is used as the atomizing gas, the atomization pressure is 0.7MPa, the deposition distance is 500mm, the scanning frequency of the atomizer is 3Hz, and the descending speed of the receiving system is 20mm / min. The flow tube temperature is 1000K, and the TiB 2 / Zn-32Al-1.2Cu alloy. The TiB-free 2 Particles of Zn-32Al-1.2Cu alloy and TiB prepared by the above spray forming technique 2 / Zn-32Al-1.2Cu alloy was tested f...

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Abstract

The invention discloses a method for in-situ reaction TiB2 particle enhancement spray forming of a zinc aluminum alloy; when a Zn-Al-Cu alloy is prepared by a spray forming technology, a precast block pressed from Al, Ti and B powders is added into an alloy melt, the precast block is subjected to in-situ reaction in the alloy melt, high-temperature-resistant TiB2 particles are formed, then the TiB2 / Zn-Al-Cu composite material is obtained through spray forming. The in-situ reaction and the spray forming technology are combined together, the spray forming rapid solidification technology is adopted, and the zinc aluminum alloy having good high temperature performance is prepared.

Description

technical field [0001] The invention relates to an in-situ reaction TiB 2 The invention relates to a method for particle reinforced spray forming zinc-aluminum alloy, which belongs to the technical field of material preparation. Background technique [0002] Zinc-aluminum alloy has excellent characteristics, such as low density, good anti-friction and wear resistance, good bearing capacity, high damping performance, non-magnetism, and no sparks during collision; at the same time, zinc-aluminum alloy has low melting point, low energy consumption, and low cost , Forming is convenient and pollution-free, suitable for various casting methods. In the past 30 years, zinc-aluminum alloys have been favored in industries such as automobiles, molds and toys, and have become a hot spot in research and development. However, due to the low melting point of zinc, the low eutectic temperature of the alloy, and the large solidification range, the high-temperature strength of zinc-aluminum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C22C32/00C22C1/10
Inventor 王锋熊柏青张永安刘红伟李志辉李锡武
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG