Method for making tough metallic glass generate macroscopic stretching plasticity

A ductile metal, tensile plastic technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve the problem of annealing brittleness restricting application and other problems

Active Publication Date: 2016-05-25
广东空天科技研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the annealing brittleness problem in the process

Method used

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  • Method for making tough metallic glass generate macroscopic stretching plasticity
  • Method for making tough metallic glass generate macroscopic stretching plasticity
  • Method for making tough metallic glass generate macroscopic stretching plasticity

Examples

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Example Embodiment

[0036] Such as figure 1 Shown is a schematic flow chart of a method for producing ductile metallic glass to produce macroscopic tensile plasticity according to an embodiment of the present invention. The method includes the following steps:

[0037] Step 100: Prepare ductile metallic glass to be processed and make it into a rod-shaped workpiece, and determine the length and diameter data of the workpiece;

[0038] The ductile metallic glass here is a type of metallic glass system that can undergo ductile fracture and has relatively good plastic deformation ability, including zirconium-based, titanium-based, copper-based, iron-based, nickel-based, palladium-based, platinum-based and most metals Glass system.

[0039] After making the rod-shaped structure, it is easy to evenly set the effective stress area on the workpiece. The length and diameter of the workpiece can be adjusted according to actual needs. The workpiece used in this embodiment is a zirconium-based amorphous alloy man...

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PUM

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Abstract

The invention provides a method for making tough metallic glass generate macroscopic stretching plasticity. The method comprises the following steps: 1, preparing tough metallic glass to be processed, making the tough metallic glass into a rodlike workpiece, and determining the length and diameter data of the workpiece; 2, according to the influential scope of the effective stress area, designing a corresponding thread structure to be processed on the surface of the workpiece; 3, fabricating the corresponding thread area on the surface of the workpiece according to the design result, so that the threaded workpiece high in stretching plasticity is obtained. According to the method, the thread structure is utilized, the tough metallic glass can be excited to generate multiple shear bands in the uniaxial stretching state, in addition, through the geometric hindrance and limitation effect of the surface micro-thread structure, expansion of the main shear band can be stabilized, and macroscopic stretching plastic deformation is caused.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a method for realizing macroscopic tensile plasticity by generating a threaded structure on the surface of the ductile metallic glass to excite multiple shear bands on the surface of the ductile metallic glass under a uniaxial tensile stress state. Background technique [0002] Compared with the macroscopic plasticity of crystalline alloys, the practical application of bulk amorphous alloys (feature size on the order of millimeters) is plagued by macroscopic brittleness, especially under uniaxial tensile stress. exhibit catastrophic brittle fracture. At room temperature, under the action of external stress, amorphous alloys usually excite many liquid-like regions near the principal stress plane, and these liquid-like regions will form a principal shear band with a width of about 10 nanometers under the action of the principal stress. . As the shear deformation proceeds, the h...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23P23/04C22F1/00C22F1/18
CPCB23P15/00B23P23/04C22F1/00C22F1/18
Inventor 高萌董杰赵德乾汪卫华郇勇
Owner 广东空天科技研究院
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