Fe-based bulk amorphous alloy material and method of producing the same

A technology of amorphous alloy and bulk, which is applied in the field of iron-based bulk amorphous alloy material and its preparation, can solve the problems that engineering materials cannot be widely used, and achieve the effects of high hardness, strong glass forming ability and simple process

Inactive Publication Date: 2009-08-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generation of millimeter-scale amorphous alloys is a major breakthrough in the research of bulk metallic glasses, but these millimeter-scale amorphous alloys are limited to noble metals such as Pd and Pt, and cannot be widely used as engineering materials.

Method used

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  • Fe-based bulk amorphous alloy material and method of producing the same
  • Fe-based bulk amorphous alloy material and method of producing the same
  • Fe-based bulk amorphous alloy material and method of producing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Embodiment 1: preparation [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 96 Dy 4 Amorphous Alloy Rods

[0017] Fe, Co, Mo, B and Dy elements according to [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 96 Dy 4 After the alloy atomic percentage is converted into mass percentage, accurately weigh Fe with a purity of 99.6%, Co with a purity of 99.9%, Mo with a purity of 99.8%, Dy with a purity of 99.9% and FeB alloy, and put the quartz in the induction furnace tube, to be evacuated to 4.0×10 -3 Pa, filled with high-purity argon protection, adjust the current from small to large, induction heating until the sample melts. Repeated smelting for 9 times to obtain evenly mixed [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 96 Dy 4 Master alloy ingots. will get [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 96 Dy 4 The master alloy ingot was broken into small pieces and ultrasonically cleaned in alcohol. Then put it into a quartz tube with an open lower end and a hole diameter of 0.5mm, and draw a vacuum ...

Embodiment 2

[0018] Embodiment 2: preparation [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 95 Dy 5 Amorphous Alloy Rods

[0019] Fe, Co, Mo, B and Dy elements according to [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 95 Dy 5After the alloy atomic percentage is converted into mass percentage, accurately weigh Fe with a purity of 99.6%, Co with a purity of 99.9%, Mo with a purity of 99.8%, Dy with a purity of 99.9% and FeB alloy, and put the quartz in the induction furnace tube. To be vacuumed to 4.0×10 -3 Pa, filled with high-purity argon protection, adjust the current from small to large, induction heating until the sample melts. Repeated smelting 10 times to obtain a well-mixed [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 95 Dy 5 Master alloy ingots. will get [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 95 Dy 5 The master alloy ingot was broken into small pieces and ultrasonically cleaned in alcohol. Then put it into a quartz tube with an open lower end and a hole diameter of 0.4 mm, and draw a vacuum to ...

Embodiment 3

[0020] Embodiment 3: preparation [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 94 Dy 6 Amorphous Alloy Rods

[0021] Fe, Co, Mo, B and Dy elements according to [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 94 Dy 6 After the alloy atomic percentage is converted into mass percentage, accurately weigh Fe with a purity of 99.6%, Co with a purity of 99.9%, Mo with a purity of 99.8%, Dy with a purity of 99.9% and FeB alloy, and put the quartz in the induction furnace tube. To be vacuumed to 4.0×10 -3 Pa, filled with high-purity argon protection, adjust the current from small to large, induction heating until the sample melts. Repeated smelting 6 times to obtain evenly mixed [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 94 Dy 6 Master alloy ingots. will get [(Fe 0.5 co 0.5 ) 72 Mo 4 B 24 ] 94 Dy 6 The master alloy ingot was broken into small pieces and ultrasonically cleaned in alcohol. Then put it into a quartz tube with an open lower end and a hole diameter of 0.4 mm, and draw a vacuum to ...

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Abstract

The invention discloses a Fe-based bulk amorphous alloy material and a preparation method thereof. The alloy material has the following chemical formula: (Fe100-aCoa)x-Moy-Bz-Dyw; the preparation method is as follows: according to needed atomic ratio of target components, Fe, Co, Mo, B and Dy are weighed and mixed after being converted to mass percent; the raw materials are put in to a vacuum induction smelting furnace, and the furnace is vacuumized to 4.0*10 Pa; then high purity argon is introduced for protection till a sample is melted; after oxide skin is removed, the raw materials are ground to small pieces; the small pieces are put into a quartz tube and the quartz tube is vacuumized; high purity argon is introduced into an induction furnace chamber, and the alloy is heated by a high frequency induction coil and melted; the melted alloy liquid is sprayed and injected into a copper mould by the high purity argon, thus obtaining the Fe-based bulk amorphous alloy material. The alloy material of the invention has high glass forming capacity, a wide supercooling liquid phase region with DeltaTx equal to 76K to 98K, high crush resistance and breaking tenacity Sigmaf which is approximately equal to 3500 MPa and high vickers hardness Hv which is approximately equal to 1130; in addition, the cost is low. Meanwhile, the preparation method is simple and can be applied to structural materials, magnetic materials and the like.

Description

technical field [0001] The invention relates to the field of amorphous magnetic materials, in particular to an iron-based bulk amorphous alloy material and a preparation method thereof. Background technique [0002] Materials in nature are classified according to their structure and can be roughly divided into two categories: crystalline and amorphous. The chaotic arrangement of amorphous alloy atoms is similar to glass, so it is also called metallic glass (Bulk Metal Glass). Due to the unique long-range disordered structure of amorphous metals and alloys, they have unique physical, chemical and mechanical properties different from crystalline metals. Such as high strength and fracture toughness, excellent corrosion resistance, excellent magnetic properties, can obtain high, positive or negative magnetostriction coefficient. Based on the good characteristics of amorphous alloy, it has been widely used in aviation, aerospace, information and electronics, precision machinery...

Claims

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Application Information

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IPC IPC(8): C22C45/02C22C33/04
Inventor 严密陶姗
Owner ZHEJIANG UNIV
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