双相钛合金Ti-6Al-4V微观组织特征的定量表征方法

doi:10.3901/JME.2021.12.217

机械工程学报 ›› 2021, Vol. 57 ›› Issue (12): 217-225.doi: 10.3901/JME.2021.12.217

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双相钛合金Ti-6Al-4V微观组织特征的定量表征方法

谢峰¹, 马亮¹, 刘玉磊^1,2, 杨东¹

1. 安徽大学电气工程与自动化学院合肥 230601;
2. 合肥水泥研究设计院有限公司合肥 230051

收稿日期:2020-11-05 修回日期:2021-05-07 出版日期:2021-06-20 发布日期:2021-08-31
通讯作者: 谢峰(通信作者),男,1963年出生,博士,教授。主要研究方向为仿生刀具设计,工业4.0及刀具故障诊断技术。E-mail:jeexf199@163.com
作者简介:马亮,男,1994年出生,硕士研究生。主要研究方向为先进控制技术及其应用。E-mail:1959615005@qq.com;刘玉磊,男,1994年出生,硕士研究生。主要研究方向为钛合金加工材料表面图像处理。E-mail:849361042@qq.com;杨东,男,1985年出生,博士,讲师。主要研究方向为钛合金等难加工材料高速切削加工表面完整性。E-mail:me_yangdong@yeah.net
基金资助:
国家自然科学基金（51975003）和安徽省自然科学基金（1908085QE230）资助项目

Quantitative Characterization Method of Microstructure Characteristics of Dual-phase Ti-6Al-4V Alloy

XIE Feng¹, MA Liang¹, LIU Yulei^1,2, YANG Dong¹

1. School of Electrical Engineering & Automation, Anhui University, Hefei 230601;
2. Hefei Cement Research & Design Institute Corporation Ltd., Hefei 230051

Received:2020-11-05 Revised:2021-05-07 Online:2021-06-20 Published:2021-08-31

摘要/Abstract

摘要： 如何快速、准确地对钛合金的微观组织含量、尺寸、分布和形态进行表征是实现其组织定量调控的关键。为实现这一目标，以钛合金Ti-6Al-4V的等轴组织为研究对象，针对钛合金中粘连组织轮廓具有不规则性而不易进行组织分割的问题，通过采用改进的快速特征点检测与绘制模板圆相结合的方法，对其切削加工后的表面微观组织图像中的粘连组织进行分割；进而采用定向度和圆形度参数来描述钛合金微观组织的分布情况和形态，并对其体积分数和晶粒尺寸进行定量表征，以便更完整地描述钛合金微观组织的特征信息。采用该方法研究钛合金Ti-6Al-4V的组织随切削速度的变化情况，验证该方法的可行性和有效性。所研究的改进的快速特征点检测与绘制模板圆相结合的方法可为材料的微观组织定量表征提供一种新思路和新方法。

关键词: 钛合金, 粘连组织分割, 特征点检测, 组织定量表征

Abstract: How to quickly and accurately characterize the microstructure content, size, distribution and morphology of titanium alloy is the key to realize the quantitative control of its microstructure. In order to achieve this goal, the equiaxed microstructure of the titanium alloy Ti-6Al-4V is taken as the research object. Aiming at the problem that the contour of adhesive microstructure titanium alloy is irregular and difficult to be segmented, the improved fast feature point detection method combined with template circle drawing is adopted to segment the adhesive microstructure in the surface microstructure image after cutting. Furthermore, the orientation and roundness parameters are used to describe the distribution and morphology of the microstructure of titanium alloy, and the volume fraction and grain size are quantitatively characterized to describe the characteristic information of the microstructure of titanium alloy more completely. Finally, the microstructure of Ti-6Al-4V Alloy with cutting speed is studied by this method, and the feasibility and effectiveness of this method are verified. The improved fast feature point detection method combined with template circle drawing provides a new idea and method for quantitative characterization of material microstructure.

Key words: titanium alloy, segmentation of adhesive microstructure, feature point detection, quantitative characterization of microstructure

中图分类号:

TH142

谢峰, 马亮, 刘玉磊, 杨东. 双相钛合金Ti-6Al-4V微观组织特征的定量表征方法[J]. 机械工程学报, 2021, 57(12): 217-225.

XIE Feng, MA Liang, LIU Yulei, YANG Dong. Quantitative Characterization Method of Microstructure Characteristics of Dual-phase Ti-6Al-4V Alloy[J]. Journal of Mechanical Engineering, 2021, 57(12): 217-225.

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双相钛合金Ti-6Al-4V微观组织特征的定量表征方法

Quantitative Characterization Method of Microstructure Characteristics of Dual-phase Ti-6Al-4V Alloy

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