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A kind of preparation method of dumbbell-shaped iron-based bulk metallic glass sample

A block metal, dumbbell-shaped technology, which is applied in metal processing equipment, manufacturing tools, casting molding equipment, etc., can solve the problem that it is impossible to prepare dumbbell-shaped tensile samples with a completely amorphous structure

Active Publication Date: 2018-07-27
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing a dumbbell-shaped iron-based bulk metallic glass sample, so as to solve the problem that a dumbbell-shaped tensile sample with a completely amorphous structure cannot be prepared in the prior art

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  • A kind of preparation method of dumbbell-shaped iron-based bulk metallic glass sample
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  • A kind of preparation method of dumbbell-shaped iron-based bulk metallic glass sample

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Embodiment

[0022] The preparation method of the dumbbell-shaped iron-based bulk metallic glass sample of the present embodiment comprises the following steps:

[0023] (1) Preparation of master alloy ingot: the chemical formula of master alloy ingot is Fe 80-x (Ni, Cr, Mo) x (P,B) y (C, Si) z , wherein, y+z=20; the raw materials for preparing the above master alloy ingot are: Fe particles (purity 99.98%), Ni particles (purity 99.7%), Fe 3 P powder (purity 99.9%), Cr powder (purity 99.9%), Mo powder (purity 99.9%), B particles (purity 99.9%), Si powder (purity 99.99%) and graphite powder (purity 99.9995%). According to the set alloy composition, the precision is 10 in proportion -5 After weighing the medicine on the electronic balance of g, put the medicine into the pre-washed and dried quartz glass tube, connect the quartz glass tube to the experimental device to evacuate, and the vacuum degree in the quartz glass tube is below 30Pa. Fill the quartz glass tube with high-purity Ar ga...

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Abstract

The invention discloses a method for preparing a dumbbell-shaped iron-based bulk metallic glass sample. Firstly, a master alloy ingot is prepared, and then the prepared master alloy ingot is purified, and then a dumbbell-shaped quartz tube is blown out to prepare a dumbbell-shaped quartz tube. Finally, the purified master alloy ingot was put into a dumbbell-shaped quartz tube, and then a dumbbell-shaped metallic glass sample was prepared by water quenching the inner melt. The method of the invention is currently the only method capable of preparing iron-based metallic glass dumbbell-shaped samples. After the dumbbell-shaped metallic glass sample is prepared, tensile tests can be done, which can broaden the research scope of the mechanical properties of iron-based metallic glasses and characterize the mechanical properties of iron-based metallic glasses more intrinsically. Utilizing the method of the invention to prepare dumbbell-shaped iron-based metallic glass samples can fill in the research gap in this direction, and breakthrough results are expected to be achieved.

Description

technical field [0001] The invention belongs to the technical field of metallic glass, and in particular relates to a preparation method of a completely amorphous iron-based bulk metallic glass dumbbell-shaped tensile sample. Background technique [0002] Metallic glass is a new type of amorphous alloy material. Its atomic arrangement does not have three-dimensional periodicity, but it still shows a certain order within a few atomic distances. It has excellent physical, chemical, and mechanical properties. It is expected to It will become a key material to support high-tech industries such as precision machinery, information, aerospace, and defense industries in the future. Iron-based metallic glass is a type of metallic glass system with the largest atomic percentage of iron in the component. The saturation magnetization is 1.0-1.7T, the coercive force can be lower than 1.0A / m, the magnetic permeability can reach 450,000, and the soft magnetic properties are far superior. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02B22C9/22
CPCB22C9/22C22C33/003C22C45/02
Inventor 杨卫明刘海顺陈培见赵玉成
Owner CHINA UNIV OF MINING & TECH
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