In situ X-ray imaging of melt pool dynamics in underwater arc welding

The dynamic behavior of the underwater melt pool was firstly in-situ observed with the X-ray transmission method. A method for quantitatively characterizing the melt pool stability was pioneered. Comparing with conventional melt pool composing metal liquid, the pool was filled with bubbles in underw...

Full description

Bibliographic Details
Main Authors:	Changsheng Xu, Ning Guo, Xin Zhang, Haiyue Jiang, Hao Chen, Jicai Feng
Format:	Article
Language:	English
Published:	Elsevier 2019-10-01
Series:	Materials & Design
Online Access:	http://www.sciencedirect.com/science/article/pii/S0264127519303375

id	doaj-72129e7728d64d81b2d033078b65ad78
record_format	Article
spelling	doaj-72129e7728d64d81b2d033078b65ad782020-11-24T21:27:59ZengElsevierMaterials & Design0264-12752019-10-01179In situ X-ray imaging of melt pool dynamics in underwater arc weldingChangsheng Xu0Ning Guo1Xin Zhang2Haiyue Jiang3Hao Chen4Jicai Feng5State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China; Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, ChinaState Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China; Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China; Corresponding author at: No.2 Wenhuaxi Road, Weihai 264209, China.Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, ChinaShandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, ChinaState Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China; Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, ChinaState Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China; Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, ChinaThe dynamic behavior of the underwater melt pool was firstly in-situ observed with the X-ray transmission method. A method for quantitatively characterizing the melt pool stability was pioneered. Comparing with conventional melt pool composing metal liquid, the pool was filled with bubbles in underwater environment. By observing the X-ray images and charactering the weld pool waveform, it is confirmed that the underwater melt pool was more volatile than onshore melt pool, which was mainly caused by the evolution of large bubble in the pool. Violent fluctuation of melt pool was the basic reason gaining poor weld and multiple defects in the underwater wet welding. To mitigate pool fluctuations by reducing the size of bubble, the ultrasonic vibration was applied directly on the workpiece, which improved the melt pool stability, uniformized the weld formation, and decreased the weld porosity. Keywords: In situ X-ray imaging, Underwater wet welding, Melt pool dynamics, Bubble evolution, Ultrasonic vibrationhttp://www.sciencedirect.com/science/article/pii/S0264127519303375
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Changsheng Xu Ning Guo Xin Zhang Haiyue Jiang Hao Chen Jicai Feng
spellingShingle	Changsheng Xu Ning Guo Xin Zhang Haiyue Jiang Hao Chen Jicai Feng In situ X-ray imaging of melt pool dynamics in underwater arc welding Materials & Design
author_facet	Changsheng Xu Ning Guo Xin Zhang Haiyue Jiang Hao Chen Jicai Feng
author_sort	Changsheng Xu
title	In situ X-ray imaging of melt pool dynamics in underwater arc welding
title_short	In situ X-ray imaging of melt pool dynamics in underwater arc welding
title_full	In situ X-ray imaging of melt pool dynamics in underwater arc welding
title_fullStr	In situ X-ray imaging of melt pool dynamics in underwater arc welding
title_full_unstemmed	In situ X-ray imaging of melt pool dynamics in underwater arc welding
title_sort	in situ x-ray imaging of melt pool dynamics in underwater arc welding
publisher	Elsevier
series	Materials & Design
issn	0264-1275
publishDate	2019-10-01
description	The dynamic behavior of the underwater melt pool was firstly in-situ observed with the X-ray transmission method. A method for quantitatively characterizing the melt pool stability was pioneered. Comparing with conventional melt pool composing metal liquid, the pool was filled with bubbles in underwater environment. By observing the X-ray images and charactering the weld pool waveform, it is confirmed that the underwater melt pool was more volatile than onshore melt pool, which was mainly caused by the evolution of large bubble in the pool. Violent fluctuation of melt pool was the basic reason gaining poor weld and multiple defects in the underwater wet welding. To mitigate pool fluctuations by reducing the size of bubble, the ultrasonic vibration was applied directly on the workpiece, which improved the melt pool stability, uniformized the weld formation, and decreased the weld porosity. Keywords: In situ X-ray imaging, Underwater wet welding, Melt pool dynamics, Bubble evolution, Ultrasonic vibration
url	http://www.sciencedirect.com/science/article/pii/S0264127519303375
work_keys_str_mv	AT changshengxu insituxrayimagingofmeltpooldynamicsinunderwaterarcwelding AT ningguo insituxrayimagingofmeltpooldynamicsinunderwaterarcwelding AT xinzhang insituxrayimagingofmeltpooldynamicsinunderwaterarcwelding AT haiyuejiang insituxrayimagingofmeltpooldynamicsinunderwaterarcwelding AT haochen insituxrayimagingofmeltpooldynamicsinunderwaterarcwelding AT jicaifeng insituxrayimagingofmeltpooldynamicsinunderwaterarcwelding
_version_	1725972259852517376

In situ X-ray imaging of melt pool dynamics in underwater arc welding

Similar Items