Mechanisms of joint formation in ultrasonic spot welding aluminium automotive sheet

D. Bakavos; Y. C. Chen; P. B. Prangnell

Mechanisms of joint formation in ultrasonic spot welding aluminium automotive sheet

D. Bakavos, Y. C. Chen, P. B. Prangnell

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

High power ultrasonic spot welding (HP-USW) is an extremely efficient new method for welding Al alloys, using ∼2% of the energy of resistance spot welding (RSW). The overall objective of mis work was to improve me current poor understanding of me mechanisms of weld formation, when HP-USW is applied to aluminium automotive sheet. To this end, results are reported where we have studied me material flow, combined with, X-ray tomography, and electron microscopy, to characterise me weld defects, stages of weld formation, and microstructure evolution, as a function of welding energy, for a standard automotive material AA6111-T4 (0.92 mm thick sheet). The origin of me complex flow features, seen in HP-USW, are discussed and were found to occur on three characteristic length scales.

Original language	English
Title of host publication	TMS Annual Meeting\|TMS Annu Meet
Place of Publication	Warrendale, PA
Publisher	Minerals, Metals & Materials Society
Pages	735-742
Number of pages	7
Volume	1
ISBN (Print)	9781118029459
Publication status	Published - 2011
Event	TMS 2011 - 140th Annual Meeting and Exhibition - San Diego, CA Duration: 1 Jul 2011 → …

Conference

Conference	TMS 2011 - 140th Annual Meeting and Exhibition
City	San Diego, CA
Period	1/07/11 → …

Keywords

AA6111
Aluminium
Microbonding
Tomography, flow features, lap shear strength
Ultrasonic welding

Light Alloys towards environmentally sustainable transport: 2nd generation solutions for Advanced Metallic Systems ( LATEST 2 )
Thompson, G. (PI), Bate, P. (CoI), Prangnell, P. (CoI), Preuss, M. (CoI), Quinta Da Fonseca, J. (CoI), Robson, J. (CoI), Skeldon, P. (CoI) & Zhou, X. (CoI)
1/02/10 → 31/07/15
Project: Research

Cite this

@inproceedings{e9f755c278714e068ba7ddfaa6ba4ac4,

title = "Mechanisms of joint formation in ultrasonic spot welding aluminium automotive sheet",

abstract = "High power ultrasonic spot welding (HP-USW) is an extremely efficient new method for welding Al alloys, using ∼2% of the energy of resistance spot welding (RSW). The overall objective of mis work was to improve me current poor understanding of me mechanisms of weld formation, when HP-USW is applied to aluminium automotive sheet. To this end, results are reported where we have studied me material flow, combined with, X-ray tomography, and electron microscopy, to characterise me weld defects, stages of weld formation, and microstructure evolution, as a function of welding energy, for a standard automotive material AA6111-T4 (0.92 mm thick sheet). The origin of me complex flow features, seen in HP-USW, are discussed and were found to occur on three characteristic length scales.",

keywords = "AA6111, Aluminium, Microbonding, Tomography, flow features, lap shear strength, Ultrasonic welding",

author = "D. Bakavos and Chen, {Y. C.} and Prangnell, {P. B.}",

year = "2011",

language = "English",

isbn = "9781118029459",

volume = "1",

pages = "735--742",

booktitle = "TMS Annual Meeting|TMS Annu Meet",

publisher = "Minerals, Metals & Materials Society",

address = "United States",

note = "TMS 2011 - 140th Annual Meeting and Exhibition ; Conference date: 01-07-2011",

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TY - GEN

T1 - Mechanisms of joint formation in ultrasonic spot welding aluminium automotive sheet

AU - Bakavos, D.

AU - Chen, Y. C.

AU - Prangnell, P. B.

PY - 2011

Y1 - 2011

N2 - High power ultrasonic spot welding (HP-USW) is an extremely efficient new method for welding Al alloys, using ∼2% of the energy of resistance spot welding (RSW). The overall objective of mis work was to improve me current poor understanding of me mechanisms of weld formation, when HP-USW is applied to aluminium automotive sheet. To this end, results are reported where we have studied me material flow, combined with, X-ray tomography, and electron microscopy, to characterise me weld defects, stages of weld formation, and microstructure evolution, as a function of welding energy, for a standard automotive material AA6111-T4 (0.92 mm thick sheet). The origin of me complex flow features, seen in HP-USW, are discussed and were found to occur on three characteristic length scales.

AB - High power ultrasonic spot welding (HP-USW) is an extremely efficient new method for welding Al alloys, using ∼2% of the energy of resistance spot welding (RSW). The overall objective of mis work was to improve me current poor understanding of me mechanisms of weld formation, when HP-USW is applied to aluminium automotive sheet. To this end, results are reported where we have studied me material flow, combined with, X-ray tomography, and electron microscopy, to characterise me weld defects, stages of weld formation, and microstructure evolution, as a function of welding energy, for a standard automotive material AA6111-T4 (0.92 mm thick sheet). The origin of me complex flow features, seen in HP-USW, are discussed and were found to occur on three characteristic length scales.

KW - AA6111

KW - Aluminium

KW - Microbonding

KW - Tomography, flow features, lap shear strength

KW - Ultrasonic welding

M3 - Conference contribution

SN - 9781118029459

VL - 1

SP - 735

EP - 742

BT - TMS Annual Meeting|TMS Annu Meet

PB - Minerals, Metals & Materials Society

CY - Warrendale, PA

T2 - TMS 2011 - 140th Annual Meeting and Exhibition

Y2 - 1 July 2011

ER -

Mechanisms of joint formation in ultrasonic spot welding aluminium automotive sheet

Abstract

Conference

Keywords

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Projects

Light Alloys towards environmentally sustainable transport: 2nd generation solutions for Advanced Metallic Systems ( LATEST 2 )

Cite this