Amorphous state nickel base alloy nucleating agent used for inoculation processing casting aluminium alloy and preparation method thereof

A technology for casting aluminum alloy and amorphous nickel, which is applied in the field of new nickel-based amorphous alloy inoculant and its preparation, and achieves the effects of shortening solidification time, facilitating dispersion and uniformity, and improving production efficiency

Inactive Publication Date: 2013-06-05
JILIN UNIV
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  • Amorphous state nickel base alloy nucleating agent used for inoculation processing casting aluminium alloy and preparation method thereof
  • Amorphous state nickel base alloy nucleating agent used for inoculation processing casting aluminium alloy and preparation method thereof
  • Amorphous state nickel base alloy nucleating agent used for inoculation processing casting aluminium alloy and preparation method thereof

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[0021] The specific content and implementation of the present invention are further described below with reference to the embodiments described in the accompanying drawings.

[0022] The present invention is a novel amorphous alloy inoculant for casting aluminum alloy, which is composed of the following components in atomic percentage: Ni: 40.000-70.000; Nb: 10.000-40.000; Ti: 5.000-20.000; Zr: 0.000-10.000.

[0023] The new amorphous nickel-based multi-alloy inoculant for casting aluminum alloys utilizes the metastable structure of amorphous alloys and the physical properties of amorphous crystallization, the physical phenomenon that amorphous crystallizes into small clusters or nanocrystals when heated The number of heterogeneous nucleation cores of the α-Al phase in the aluminum alloy melt is greatly increased instantaneously, and the α-Al grains are refined.

[0024] The technical scheme of the invention is as follows: the alloy elements of Ni, Nb, Ti and Zr are proportion...

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Abstract

The invention relates to an amorphous state nickel base alloy nucleating agent used for inoculation processing casting aluminium alloy and a preparation method of the amorphous state nickel base alloy nucleating agent. Components of the novel amorphous state nucleating agent are composed that according to the atomic percent: 40.000-70.000 parts of Ni, 10.000-40.000 parts of Nb, 5.000-20.000 parts of Ti and 0.000-10.000 parts of Zr. Steps of preparation technology are that certain components of the Ni alloy, the Nb alloy, the Ti alloy and the Zr alloy are produced by matching. The amorphous state nickel base alloy nucleating agent is stirred and repeatedly smelted in a turn-over mode by using an electric arc with an auxiliary device of an electromagnetism in a water-cooled copper crucible under the protection of high-purity argon of Ti oxygen inhalation. A nickel base alloy melting body is formed by suction casting. A casting alloy rod is placed in an induction heating single roll rotary quenching system to be remelted, and then the casting alloy rod is rotary quenched to be an amorphous strip belt. The amorphous state nickel base alloy nucleating agent used for inoculation processing casting aluminium alloy is convenient to disperse and balance. Practical yield rate of a modificator is high. Refined tissues are uniform. The amorphous state nickel base alloy nucleating agent used for inoculation processing casting aluminium alloy has the advantages of being high in production efficiency, suitable for continuously casting on a large scale and the like.

Description

technical field [0001] The invention relates to the field of alloy solidification, in particular to a novel nickel-based amorphous alloy inoculant for inoculating cast aluminum alloys and a preparation method thereof. Background technique [0002] In the field of solidification of metal materials, modifiers and inoculants are generally added to the metal melt in the form of crystals (elements, compounds, alloys, etc.) for modification and inoculation, refining the crystalline phase or changing the growth mode of the crystalline phase. The mechanism is generally the core (non-spontaneous core) or "poisoning" theory. There are currently no literature reports on the use of amorphous alloys for modification or inoculation. The invention relates to a novel amorphous nickel-based alloy inoculant for inoculating cast aluminum alloys and a preparation method thereof. The metastable structure of amorphous alloy and the physical properties of amorphous crystallization are used to in...

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Application Information

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IPC IPC(8): C22C45/04B22D11/06B22D18/06B22D27/20
Inventor 邱丰姜启川百志好胡威
Owner JILIN UNIV
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