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Component optimization design method of austenite Fe-Mn-Al-C light alloy steel

A fe-mn-al-c, optimized design technology, applied in the field of metal materials, can solve the problem of micro solubility

Pending Publication Date: 2021-09-10
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solubility of substituting atoms in austenite varies, some are infinitely soluble, some are very soluble

Method used

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  • Component optimization design method of austenite Fe-Mn-Al-C light alloy steel
  • Component optimization design method of austenite Fe-Mn-Al-C light alloy steel
  • Component optimization design method of austenite Fe-Mn-Al-C light alloy steel

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Embodiment Construction

[0043] Fe-Mn-Al-C alloy components of an austenitic light optimization method, comprising the steps of:

[0044] S1: the development of typical chemical composition

[0045] In the chemical composition range of the austenitic Fe-Mn-Al-C alloy light based on defined, as shown in Table 1, to develop a Mn content corresponding to a respective different contents of Al, C typically steel chemical composition;

[0046] For the range of austenitic Fe-Mn-Al-C alloy element light component initially calculated as: Mn: 20-30wt%, Al: 5-12wt%, C: 0.5-1.5wt%, the balance being Fe, in a typical chemical composition of the Al alloy elements α stabilizing element, in a typical chemical composition of the alloy elements Mn is an austenite stabilizing element γ, in a typical chemical composition of alloy elements of C strong carbide forming element for promoting formation of single-phase γ austenite phase;

[0047] Table 1 Typical austenitic Fe-Mn-Al-C alloy chemical composition and the light value...

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Abstract

The invention discloses a component optimization design method of austenite Fe-Mn-Al-C light alloy steel, and relates to the technical field of metal materials. The component optimization design method comprises the steps that S1, typical chemical components are formulated; S2, thermodynamic and phase diagram calculation is carried out; S3, a corresponding relation graph of the precipitation temperature and calculated SFE is drawn; S4, the chemical components of the alloy are optimized; and S5, chemical component and experiment detection is carried out. The typical chemical components of the alloy steel are formulated on the basis of the chemical component range limited by the austenite Fe-Mn-Al-C light alloy steel, an Olson-Cohen thermodynamic model is selected to calculate the stacking fault energy (SFE) of the typical alloy steel, all the chemical components are optimized, a deformation mechanism of materials can be predicted through the method, the generation content and precipitation temperature of kappa-C carbide are controlled, the strengthening effect of the kappa-C carbide on the austenite light steel is achieved, and a theoretical basis is provided for alloy design and production.

Description

Technical field [0001] Technical Field The present invention relates to a metal material, particularly relates to an austenitic composition Fe-Mn-Al-C alloy lightweight design optimization method. Background technique [0002] Austenite (Austenite) is one kind of lamellar microstructure of steel, usually γ-Fe solid solution in a small amount of carbon in solid solution non-magnetic, austenitic, or also known as γ-Fe. Austenite name from British metallurgist Roberts Austin. [0003] Austenitic generally equiaxed grains by the polygon composition, crystal grains have twins. Transformation of austenite grains at the time of heating the just-concluded relatively small, irregular grain boundaries arc. After a period of incubation or heating, the grains grow, grain boundary may tend flattening. Iron-carbon phase diagram in the high-temperature phase is austenite present in the temperature above the critical point A1, pearlite eutectoid transformation from reverse. When added to the ste...

Claims

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Application Information

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IPC IPC(8): C22C38/06C22C38/04C22C33/04C21D8/00
CPCC22C38/06C22C38/04C22C33/04C21D8/005
Inventor 刘世锋马宁王岩宋玺
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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