Multielement Mg-based amorphous alloy

An amorphous alloy and amorphous technology, which is applied in the field of multi-component Mg-based amorphous alloys, can solve the problems of unpublished patents and high prices of Y elements

Inactive Publication Date: 2012-01-04
ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are two problems in these alloy systems that need to be solved urgently. One is to further improve the formation ability and thermal stability of amorphous alloys, and the other is that the price of Y element is rela...

Method used

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  • Multielement Mg-based amorphous alloy

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Embodiment 1

[0009] After the same smelting method as in Comparative Example 1, Mg can be obtained by adding Nd (99.95%) to replace part Y 65 Cu 22 Ni 3 Y 8 Nd 2 amorphous alloy. The critical thickness for amorphous formation is 2.6 mm, which is higher than that of Mg 65 Cu 22 Ni 3 Y 10 The critical thickness of amorphous alloys is comparable. However, the thermal stability of these two amorphous alloys is completely different. Supercooled liquid region ΔT x Indicates the tendency of devitrification of the amorphous alloy after it is heated above the glass transition point, and is an important index to measure the thermal stability of the amorphous alloy, ΔT x The larger the value, the better the thermal stability of the amorphous alloy. in Mg 65 Cu 22 Ni 3 Y 10-x Nd x (x=0, 2, 4, 5, 6, 8) In the amorphous alloy, the amorphous alloy Mg 65 Cu 22 Ni 3 Y 8 Nd 2 ΔT x Maximum, up to 61.5, amorphous alloy Mg 65 Cu 22 Ni 3 Y 10 ΔT x is 57.6. Therefore, the amorphous al...

Embodiment 2

[0011] After the same smelting method as in Comparative Example 1, Mg can be obtained by adding Nd (99.95%) to replace part Y 65 Cu 22 Ni 3 Y 5 Nd 5 amorphous alloy. The critical thickness of amorphous formation is 3.6 mm, reaching the maximum value, and the thickness is much larger than that of Mg 65 Cu 22 Ni 3 Y 10 The critical thickness of amorphous alloy, but its thermal stability is better than that of Mg 65 Cu 22 Ni 3 Y 8 Nd 2 Worse.

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Abstract

The invention provides a multielement Mg-based amorphous alloy and belongs to the technical field of amorphous alloy. The multielement Mg-based amorphous alloy is characterized in that Mg65Cu22Ni3Y10-xNdx (x is 0,2,4,5,6 or 8) block amorphous alloy is prepared by using a wedge-shaped copper mould casting method, wherein the alloy with the best amorphous formation capacity is a Mg65Cu22Ni3Y5Nd5 amorphous alloy, and the amorphous formation critical thickness of the Mg65Cu22Ni3Y5Nd5 amorphous alloy is 3.6mm which is the maximum; the amorphous formation critical thickness of the Mg65Cu22Ni3Nd8Y2 alloy with the poorest amorphous formation capacity is also equivalent to that of the Mg65Cu22Ni3Y10 alloy, which indicates after Y is replaced by Nd, the amorphous formation capacity of the alloy is improved at different degrees; and the alloy with the best thermal stability is Mg65Cu22Ni3Y8Nd2 amorphous alloy, and the thermal stability of the Mg65Cu22Ni3Y8Nd2 amorphous alloy is greatly improved as compared with that of the Mg65Cu22Ni3Y10 alloy.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloys, in particular to a multi-element Mg-based amorphous alloy. Background technique [0002] In recent years, the development of multi-component bulk amorphous alloys has been widely valued by people. In order to prepare bulk amorphous alloys, people's attention has shifted from process research to the exploration of new formulations. The development of magnesium-based amorphous alloys is developed on the basis of the Mg-Cu-Y ternary system. After more than 10 years of development, people have developed a variety of quaternary and quinary magnesium-based amorphous alloy systems. For example: Mg-Cu-Y-Ag quaternary alloy and Mg-Cu-Y-Ag-Pd quinary alloy, Ag and Pd partially replace Cu can further improve the amorphous forming ability of Mg-Cu-Y alloy system. Reference [1] (Yang Chunxiu. Preparation and properties of magnesium-based bulk amorphous alloys [D]. Lanzhou University of Technology. 2...

Claims

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Application Information

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IPC IPC(8): C22C45/00
Inventor 司松海司乃潮陈振华杨道清齐宝林
Owner ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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