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Technology of preparing order alloy thin plate with iron silicon series base by step enhaneing plasticity method

A technology of ordered alloy and plasticization method, which is applied in the field of preparing iron-silicon-based ordered alloy thin plates, can solve the problems of high cost, no clear description of the change of alloy plasticity and its arguments, and inappropriateness, so as to improve tensile strength. elongation effect

Inactive Publication Date: 2005-01-05
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0010] It can be seen from the above introduction that in addition to the traditional rolling process, other preparation processes are complicated and costly, which are not suitable for our country
At the same time, these studies have not clearly explained the change of alloy plasticity and its arguments, and how to improve plasticity, improve processing conditions, and prepare thin plates with high silicon content

Method used

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  • Technology of preparing order alloy thin plate with iron silicon series base by step enhaneing plasticity method
  • Technology of preparing order alloy thin plate with iron silicon series base by step enhaneing plasticity method
  • Technology of preparing order alloy thin plate with iron silicon series base by step enhaneing plasticity method

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Embodiment 1

[0028] After the raw materials are prepared, they are smelted in the medium-frequency vacuum induction furnace of the Experimental Center of the School of Materials Science and Technology, Beijing University of Science and Technology. The box-type resistance furnace of the State Key Laboratory of New Metal Materials of Beijing University of Science and Technology was used to anneal at 1050 ° C for 50 hours, and then an air hammer was used to forge a 100 mm wide slab with a thickness of 12 to 14 mm at 1000 ° C to 700 ° C. Rolling with large deformation at different temperatures for 10 times, the temperature in sequence is: 1000, 900, 850, 760, 600, 500, 450, 400, 300, 100 ° C, combined with the gradual plasticization process of special heat treatment process, successfully A Fe14Si2-based alloy sheet with a thickness of 0.1mm was obtained, the Si content was 14% (atomic percentage), the total amount of alloying elements B, Ti, and Al was 2% (wt), and the cooling method was water co...

Embodiment 2

[0030] After the raw materials are prepared, they are smelted in the medium-frequency vacuum induction furnace of the Experimental Center of the School of Materials Science and Technology, Beijing University of Science and Technology. The box-type resistance furnace of the State Key Laboratory of New Metal Materials of Beijing University of Science and Technology was used to anneal at 1050 ° C for 50 hours, and then an air hammer was used to forge a 100 mm wide slab with a thickness of 12 to 14 mm at 1000 ° C to 700 ° C. Rolling with large deformation at different temperatures for 4 times, the temperature in sequence: 1000, 800, 500, 300, 100 ℃, combined with the gradual plasticizing process of special heat treatment process, successfully obtained Fe14Si2-based alloy sheet with a thickness of 0.1mm, The Si content is 11% (atomic percentage), the alloy element B is 0.1% (wt), and the cooling method is brine cooling.

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Abstract

The invention is a technique of preparing Fe14Si2-based order alloy sheet by gradually plasticizing process, firstly designing plastic alloy, melting, annealing cast ingots and forging, then rolling and making gradually plasticizing process, and finally making 0.1-0.3 mm-sized Fe14Si2-based alloy sheet. The concrete process parameters: the silicon content range 11-14% (atomic ratio), and the total content of other plasticizing and alloying elements 0.01-2% (weight ratio); using a vacuum melting furnace, firstly putting in pure iron and silicon, and after melting and before casting, putting in trace alloying elements; annealing cast ingots at 950 deg.C-1200 deg.C and forging into sheet blanks at 1050 deg.C-700 deg.C; combining rolling and special heat treatment. Its advantage: it adopts gradually plasticizing process to succeed in reducing brittleness-toughness converstion temperature and enhancing tensile plasticity of alloy sheets.

Description

technical field [0001] The invention belongs to the technical field of preparing iron-silicon-based ordered alloy thin plates, and in particular provides a technology for preparing Fe14Si2-based ordered alloy thin plates by a step-by-step plasticization method. Background technique [0002] When the silicon content of the Fe-Si alloy is generally lower than 3wt%, it is a conventionally produced silicon steel sheet. Increasing silicon content leads to ordering of the alloy and dramatic changes in magnetic and mechanical properties. When the silicon content increases to 6.5%, the resistivity increases to double that of 3% silicon steel, and the saturation magnetostriction coefficient λ s Almost zero, the magnetocrystalline anisotropy coefficient K 1 About half of 3% silicon steel (recorded by K.I.Ari and K.Ishiyama, J.Magn.Magn.Mater., 133(1994) 233), so the maximum magnetic permeability μ m Reaching the highest, the magnetic loss is greatly reduced (recorded in H.Haiji et ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/12C22C38/02
Inventor 林均品王艳丽林志惠希东陈国良
Owner UNIV OF SCI & TECH BEIJING
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