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A Cellular Automata Method for Simulating Static Recrystallization Behavior of gh4169 Alloy

A GH4169, static recrystallization technology, applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve the problems of complex evolution law of GH4169 alloy

Inactive Publication Date: 2018-11-09
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the complex evolution of the microstructure of the GH4169 alloy during the static recrystallization process, there is still a lack of methods that can accurately simulate the microstructure evolution of the GH4169 alloy during the interval between passes.

Method used

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  • A Cellular Automata Method for Simulating Static Recrystallization Behavior of gh4169 Alloy
  • A Cellular Automata Method for Simulating Static Recrystallization Behavior of gh4169 Alloy
  • A Cellular Automata Method for Simulating Static Recrystallization Behavior of gh4169 Alloy

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] The invention is a cellular automaton method for simulating the static recrystallization behavior of GH4169 alloy, and the method comprises the following steps:

[0039] Step 1: a step of generating an initial microstructure;

[0040] Step 2: the step of simulating static recrystallization;

[0041] Step 1 includes the following sub-steps:

[0042] (1) Selected simulation area 920×920μm 2 , divided into 460×460 grids, the side length of each square cell is L c 2μm, set the total number of simulation steps to 300;

[0043] (2) Assign an initial value to the cell state variable, which includes a grain number variable and a grain orientation variable;

[0044] (3) Randomly select 178 cells in the selected simulation area, and assign different grain number variables and grain orientation variables to the selected 178 cells;

[0045] (4) Carry out the following...

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Abstract

The invention discloses a cellular automaton method simulating the static recrystallization behavior of GH4169 alloy. The method includes the following steps that firstly, an initial microstructure is generated; secondly, the static recrystallization behavior is simulated. The cellular automaton method simulating the static recrystallization behavior of GH4169 alloy is a static recrystallization behavior simulating method based on a physical mechanism, the static recrystallization behavior of GH4169 alloy can be accurately simulated, and technological support is provided for reasonably formulating the hot working technology of GH4169 alloy.

Description

technical field [0001] The invention relates to a cellular automaton method for simulating the static recrystallization behavior of GH4169 alloy, belonging to the technical field of thermal processing engineering. Background technique [0002] GH4169 alloy has excellent high temperature strength, fatigue resistance, creep resistance, oxidation resistance and corrosion resistance, and is widely used in the manufacture of key components of aero-engines: such as turbine discs, compressor discs, casings, etc. Large and complex GH4169 alloy parts are usually formed by multi-pass thermal deformation methods such as forging, rolling, and extrusion. During the forming of these parts, the microstructural evolution of the alloy is very complex. Static recovery, static recrystallization or sub-dynamic recrystallization will occur during the pass interval of thermoforming and the heat preservation stage after deformation. This can significantly change the microstructure of the alloy, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 蔺永诚刘延星陈明松
Owner CENT SOUTH UNIV