In-situ measurement of Ti-6Al-4V grain size distribution using laser-ultrasonic technique

被引：42

作者：

Dong, Feng ^{[1
,2
]}

Wang, Xiaochen ^{[1
]}

Yang, Quan ^{[1
]}

Liu, Huaqiang ^{[1
,2
]}

Xu, Dong ^{[1
,2
]}

Sun, Youzhao ^{[1
]}

Zhang, Yanjie ^{[1
]}

Xue, Renjie ^{[1
]}

Krishnaswamy, Sridhar ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Natl Engn Res Ctr Flat Rolling Equipment, Beijing 100083, Peoples R China

[2] Northwestern Univ, Ctr Smart Struct & Mat, Evanston, IL 60208 USA

来源：

SCRIPTA MATERIALIA | 2018年 / 154卷

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Titanium alloys; Nondestructive testing; Thermally stimulated acoustic methods; Grain size distribution; Electron backscattering diffraction; POLYCRYSTALLINE MATERIALS; ATTENUATION MEASUREMENTS; HETEROGENEOUS MATERIALS; DIFFRACTION; TITANIUM; STEEL; DEPENDENCE; GROWTH; TEMPERATURES; VELOCITY;

D O I：

10.1016/j.scriptamat.2018.05.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A laser-ultrasonic system was established combining an 8 ns width pulsed laser for ultrasound generation and a two-wave mixing (TWM) interferometer for detection. Several Ti-6Al-4V samples were heat treated variously to get different grain sizes. Longitudinal wave back wall echoes were used to calculate the frequency dependent attenuation of ultrasound after the signals were denoised using wavelet transform. A model was built to calculate the log-normal distribution of grain size based on the correlation between the frequency dependent attenuation and the volumetric grain size distribution derived from electron backscattering diffraction data (EBSD) using Schwartz-Saltykov method. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：40 / 44

页数：5

共 56 条

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