Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Heat treatment method of amorphous alloy

A heat treatment method and technology for amorphous alloys, applied in the field of preparation of amorphous alloys, can solve the problems of material embrittlement, complicated work, material failure, etc., and achieve the effects of good toughness, excellent soft magnetic properties, and easy selection.

Active Publication Date: 2018-07-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the common trial-and-error method in the industry to try annealing at different temperatures and different times, the work is complicated and often fails to meet the expected assumptions. Sometimes even if the magnetic properties meet the requirements, it will also cause embrittlement of the material, resulting in Late material failure, thus limiting its application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat treatment method of amorphous alloy
  • Heat treatment method of amorphous alloy
  • Heat treatment method of amorphous alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of Amorphous Alloy Fe by Heat Treatment 77 Si 2.7 B 14.9 P 4 C 1.4 , including the following steps.

[0027] (1) Select Fe 77 Si 2.7 B 14.9 P 4 C 1.4 Alloy, the strip is prepared by rapid quenching and solidification at a high copper roll speed of 40m / s;

[0028] The microstructure of the ribbon was detected by XRD, and the ribbon was completely amorphous.

[0029] The glass transition temperature and crystallization temperature of the strip were detected by DSC at a heating rate of 40°C / min. Such as figure 1 As shown, the crystallization initiation temperature Tx is 793K, and the glass transition temperature Tg is 775K.

[0030] (2) Construct a two-dimensional coordinate system with time and temperature as the horizontal and vertical coordinates, test the in-situ annealing DSC data of the amorphous strip at different times and temperatures, and calculate the relaxation requirements based on the relaxation peaks at different heating rates The ov...

Embodiment 2

[0052] Preparation of Amorphous Alloy Fe by Heat Treatment 77 Si 2.7 B 14.9 P 4 C 1.4 , including the following steps.

[0053] (1) is exactly the same as step (1) in embodiment 1;

[0054] (2) exactly the same as step (2) in embodiment 1;

[0055] (3) In the present embodiment, select 743K (below Tg 30K) as heat treatment temperature, it is advisable to carry out heat treatment 1-8 minute under this heat treatment temperature, select heat treatment 5 minutes in the present embodiment, be specifically:

[0056] Use a fast heating furnace to raise the temperature of the strip to 743K and then keep it warm. The heating speed is selected as 400K / min, and the holding time is 5 minutes, and then it is taken out and air-cooled.

[0057] Tested by the bending and tearing device, the heat-treated strip has excellent toughness, and the bending and tearing radius is less than 0.5mm, which can meet the post-processing in the industry.

[0058] The samples after heat treatment were...

Embodiment 3

[0066] Preparation of Amorphous Alloy Fe by Heat Treatment 76 Si 9 B 10 P 5 , including the following steps.

[0067] (1) Select Fe 76 Si 9 B 10 P 5 Alloy, the strip is prepared by rapid quenching and solidification at a high copper roll speed of 40m / s;

[0068] The microstructure of the ribbon was detected by XRD, and the ribbon was completely amorphous.

[0069] The glass transition temperature and crystallization temperature of the strip were detected by DSC at a heating rate of 40°C / min. The crystallization initiation temperature Tx is 832K, and the glass transition temperature Tg is 780K.

[0070] (2) Construct a two-dimensional coordinate system with time and temperature as the horizontal and vertical coordinates, test the in-situ annealing DSC data of the amorphous strip at different times and temperatures, and calculate the relaxation requirements based on the relaxation peaks at different heating rates The overcome energy barrier, that is, the relaxation act...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a heat treatment method of an amorphous alloy. The amorphous alloy is an amorphous strip manufactured through rapid quenching and solidification. According to the method, heattreatment and relaxation are combined; firstly, a relaxation activation energy spectrogram is established with the time and temperature as a two-dimensional coordinate system and a two-dimensional transition area from a relaxation activation energy area beta to a relaxation activation energy area alpha is obtained; and then, the transition area is selected as a heat treatment area, that is, a two-dimensional area composed of heat treatment temperature and heat preservation time is located in the transition area. The method is simple and easy to implement. The strip subjected to heat treatmenthas excellent soft magnetic properties and good toughness and has good application prospects.

Description

technical field [0001] The invention relates to the technical field of preparation of amorphous alloys, in particular to a heat treatment method for amorphous alloys. Background technique [0002] As a functional material, soft magnetic materials have played an irreplaceable role in my country's national production and application. The research, development, production and application of new soft magnetic materials with excellent performance are of great significance to the development of my country's high-tech industries, the promotion of traditional industries, and the development of related industries. Modern power electronics technology is developing in the direction of energy saving, high efficiency, and environmental protection, which constantly poses new challenges and development opportunities for the development of soft magnetic materials. The development of soft magnetic materials with high saturation magnetic induction, high permeability and low loss, the so-call...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D6/00C22C45/02
CPCC21D1/26C21D6/008C22C45/02
Inventor 何娜娜王军强霍军涛许巍李润伟
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com