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A kind of amorphous alloy hot extrusion device and method

A technology of amorphous alloy and hot extrusion, applied in the direction of metal extrusion, metal extrusion die, metal extrusion control equipment, etc., can solve the problem of the lack of mature quantitative theory of amorphous alloy and the preparation of large-scale amorphous alloy products Difficult, difficult to control the extrusion temperature and other problems, to achieve the effect of low density, low density and fast molding speed

Active Publication Date: 2018-10-16
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, there are two problems in the application of amorphous alloys: one is the limitation of product size, there is no mature and quantitative theory for the composition design of amorphous alloys, and it is very difficult to prepare large-sized amorphous alloy products that meet engineering needs
The extrusion force of the method is too small, and the extrusion temperature is difficult to control

Method used

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  • A kind of amorphous alloy hot extrusion device and method
  • A kind of amorphous alloy hot extrusion device and method
  • A kind of amorphous alloy hot extrusion device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] In the Zr68Cu12Ni9Ti8Be3 supercooled liquid phase region (355°C-445°C) and the conventional extrusion temperature of 7075 aluminum alloy (250°C-550°C), the temperature 440°C is selected, for Zr68Cu12Ni9Ti8Be3 amorphous alloy of Φ10mm×5mm and Φ10mm×5mm The 7075 aluminum alloy was co-hot extruded at an extrusion rate of 3 mm / min, and the connection of Zr68Cu12Ni9Ti8Be3 zirconium-based amorphous and 7075 aluminum alloy was realized.

[0078] Select Example 1 as a representative example, carry out macroscopic morphology analysis, XRD, 1000 times magnification observation under EPMA, and EPMA-DES component analysis on the molded workpiece obtained by hot extrusion connection of zirconium-based amorphous and 7075 aluminum alloy, the results are as follows Figure 4 to Figure 7 shown.

[0079] Figure 4 This is the macro-morphology diagram of the zirconium-based amorphous / 7075 aluminum alloy connector prepared in Example 1. It can be seen that the longitudinal dimension of th...

Embodiment 2

[0084] Among the Zr55Al10Ni5Cu30 supercooled liquid phase region (409.7°C-493.7°C) and the conventional extrusion temperature of 7075 aluminum alloy (250°C-550°C), the selected temperature is 485°C, for Zr55Al10Ni5Cu30 amorphous alloy of Φ10mm×5mm and Φ10mm×10mm7075 The aluminum alloy is co-hot extruded at an extrusion rate of 4 mm / min, and the connection of Zr55Al10Ni5Cu30 zirconium-based amorphous and aluminum alloy is realized.

[0085] The amorphous part maintains a good amorphous state, no intermetallic compound is found in the bonding part, the bonding interface is smooth, and the element diffusion in the bonding region is obvious.

Embodiment 3

[0087] Among the Zr68Cu12Ni9Ti8Be3 supercooled liquid phase region (355°C-445°C) and the conventional extrusion temperature of AZ31B magnesium alloy (300°C-450°C), the temperature 440°C is selected, for Zr68Cu12Ni9Ti8Be3 amorphous alloy of Φ10mm×5mm and Φ10mm×15mm The AZ31B magnesium alloy was co-hot extruded at an extrusion rate of 2mm / min to realize the connection of zirconium-based amorphous and AZ31B magnesium alloy.

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Abstract

The invention discloses an amorphous alloy hot extrusion device and method. The device comprises a die and a punch. An extrusion chamber is arranged inside the die, and an electric heating element is arranged outside the die. The molding cavity of the set shape is connected, the volume of the molding cavity is smaller than the volume of the extrusion cavity, the molding cavity communicates with the outside world or communicates with the outside world through the guide sleeve, and the punch and the die cooperate to extrude the amorphous alloy and the Heterogeneous alloys and form amorphous alloys and heterogeneous alloys through the forming cavity, realizing the longitudinal connection of amorphous alloys and heterogeneous aluminum / magnesium alloys, expanding the application size range of amorphous alloys, and realizing aluminum / magnesium in space The optimal combination of the plasticity and toughness of the alloy and the high hardness, high wear resistance and corrosion resistance of the amorphous alloy, the extrusion temperature is located in the supercooled liquid phase region of the amorphous alloy and the conventional hot extrusion temperature range of the heterogeneous aluminum / magnesium alloy, the amorphous Alloys and heterogeneous alloys are in a low-stress superplastic state, which is beneficial to reduce extrusion force and promote interfacial bonding.

Description

technical field [0001] The invention relates to the field of amorphous alloy connection, in particular to an amorphous alloy hot extrusion device and method. Background technique [0002] Amorphous alloys are a major discovery in the field of materials in the 20th century. The atomic arrangement inside the material is a long-range disordered short-range order structure, without defects such as dislocations and grain boundaries. This unique structure makes amorphous alloys have high strength, superplasticity, high elasticity, high hardness, high wear resistance and high corrosion resistance. It has broad application prospects in aerospace, precision instruments, biomedicine and other fields. [0003] However, there are two problems in the application of amorphous alloys: one is the limitation of product size, there is no mature and quantitative theory for the composition design of amorphous alloys, and it is very difficult to prepare large-sized amorphous alloy products that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/22B21C25/02B21C29/00B21C31/00
CPCB21C23/002B21C23/22B21C25/02B21C29/003B21C31/00
Inventor 李辉平蒋芮刘海娟侯弘历贺连芳张春芝
Owner SHANDONG UNIV OF SCI & TECH
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