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A Method for Predicting the Deformation Capability of Metal Materials

A metal material and ability technology, applied in the field of materials, can solve the problems of not being able to predict metal deformation ability well, and achieve the effect of less time-consuming and labor-intensive steps, simple steps, and high prediction accuracy

Active Publication Date: 2022-03-08
JIHUA LAB
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the SF method cannot predict the deformation ability of most metals very well.

Method used

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  • A Method for Predicting the Deformation Capability of Metal Materials
  • A Method for Predicting the Deformation Capability of Metal Materials
  • A Method for Predicting the Deformation Capability of Metal Materials

Examples

Experimental program
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Effect test

Embodiment 1

[0090] The metal material sample to be tested in this embodiment is a rolled AZ31 magnesium alloy plate.

[0091] The grain orientation distribution diagram obtained by calibration in step S1 is shown in figure 2 , it can be seen from the figure that most of the grains in the plate show the same color, that is, the orientation of the internal grains tends to be preferred, which is a typical basal texture orientation phenomenon of magnesium alloys.

[0092] image 3 is the true stress-strain curve of the sample obtained through experiments, where RDT is the tensile true stress-strain curve along the rolling direction, RDC is the compressive true stress-strain curve along the rolling direction, and TDT is the tensile true stress-strain curve along the width direction True stress-strain curve, TDC is the compressive true stress-strain curve along the width direction, and NDC is the compressive true stress-strain curve along the thickness direction; this figure shows that the dena...

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Abstract

The invention provides a method for estimating the deformability of a metal material, comprising steps: S1. Calibrating the internal grain orientation distribution map of the metal material sample to be tested; S2. Specifying an external load direction, extracting each Orientation data of each grain, and calculate the SF value of the main deformation mechanism inside each grain; S3. Statistics of the deformation coordination factor between each grain and its adjacent grains; S4. According to the obtained SF value and deformation coordination Calculate the comprehensive coordination coefficient of the slip system in each grain by factor; S5. Calculate the average comprehensive coordination coefficient value according to the comprehensive coordination coefficient of the slip system in all grains, and use the average comprehensive coordination coefficient value as the estimated metal material The index of the deformation ability in the direction of the specified external load; the method has simple steps, less time-consuming and labor-intensive and high prediction accuracy.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for estimating the deformability of metal materials. Background technique [0002] Since the deformation ability of metal materials has a great influence on the processing performance of metal products such as stamping, forging, drawing, and extrusion, it is often necessary to pre-estimate the deformation ability of alternative materials when selecting materials. At present, there are two main methods for estimating the deformability of metal materials: the test method and the average Schmidt factor estimation method (hereinafter referred to as the SF method). [0003] The test method is to obtain the deformation curve of the material under the uniaxial stress state through the standard tension and compression test, and obtain the deformation curve of the material under the biaxial tension state or the tension-compression biaxial stress state through the punching cup t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16C60/00G16C10/00G06F30/20G06F119/14G06F111/10
CPCG16C60/00G16C10/00G06F30/20G06F2119/14G06F2111/10
Inventor 夏大彪刘伟冯上样徐龙赵聪聪
Owner JIHUA LAB
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