Butt-welding residual stress of heat treatable aluminum alloys

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study, taking three types of aluminum alloys 2024-T351, 6061-T6 and 7075-T6 as experimental materials, conducted single V-groove GTAW (gas tungsten arc welding) butt-welding to analyze and compare the magnitude and differences of residual stress in the three aluminum alloys at different single V-groove angles and in restrained or unrestrained conditions. The results show that the larger the grooving angle of butt joint, the higher the residual tensile stress. Too small grooving angle will lead to dramatic differences due to the amount of welding bead filler metal and pre-set joint geometry. Therefore, only an appropriate grooving angle can reduce residual stress. While welding, weldment in restrained condition will lead to a larger residual stress. Also, a residual stress will arise from the restraint position. The ultimate residual stress of weldment is determined by material yield strength at equilibrium temperature. The higher the yield strength at equilibrium temperature, the higher the material residual stress. Because of its larger thermal conductivity, aluminum alloy test specimens have small temperature differential. Therefore, the residual tensile stress of all materials is lower than their yield strength.

Original languageEnglish
Pages (from-to)217-222
Number of pages6
JournalJournal of Materials Science and Technology
Volume23
Issue number2
Publication statusPublished - 2007 Mar 1

Fingerprint

Butt welding
Aluminum alloys
Residual stresses
Yield stress
Tensile stress
Welding
Filler metals
Tungsten
Hot Temperature
Electric arc welding
Temperature
Thermal conductivity
Gases
Geometry

Keywords

  • Aluminum alloy
  • Hole-drilling strain-gage method
  • Residual stress
  • Single-V groove

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Polymers and Plastics
  • Metals and Alloys
  • Materials Chemistry

Cite this

Butt-welding residual stress of heat treatable aluminum alloys. / Cheng, Ching-min.

In: Journal of Materials Science and Technology, Vol. 23, No. 2, 01.03.2007, p. 217-222.

Research output: Contribution to journalArticle

@article{2103af2e834547b59e36304481177db2,
title = "Butt-welding residual stress of heat treatable aluminum alloys",
abstract = "This study, taking three types of aluminum alloys 2024-T351, 6061-T6 and 7075-T6 as experimental materials, conducted single V-groove GTAW (gas tungsten arc welding) butt-welding to analyze and compare the magnitude and differences of residual stress in the three aluminum alloys at different single V-groove angles and in restrained or unrestrained conditions. The results show that the larger the grooving angle of butt joint, the higher the residual tensile stress. Too small grooving angle will lead to dramatic differences due to the amount of welding bead filler metal and pre-set joint geometry. Therefore, only an appropriate grooving angle can reduce residual stress. While welding, weldment in restrained condition will lead to a larger residual stress. Also, a residual stress will arise from the restraint position. The ultimate residual stress of weldment is determined by material yield strength at equilibrium temperature. The higher the yield strength at equilibrium temperature, the higher the material residual stress. Because of its larger thermal conductivity, aluminum alloy test specimens have small temperature differential. Therefore, the residual tensile stress of all materials is lower than their yield strength.",
keywords = "Aluminum alloy, Hole-drilling strain-gage method, Residual stress, Single-V groove",
author = "Ching-min Cheng",
year = "2007",
month = "3",
day = "1",
language = "English",
volume = "23",
pages = "217--222",
journal = "Journal of Materials Science and Technology",
issn = "1005-0302",
publisher = "Chinese Society of Metals",
number = "2",

}

TY - JOUR

T1 - Butt-welding residual stress of heat treatable aluminum alloys

AU - Cheng, Ching-min

PY - 2007/3/1

Y1 - 2007/3/1

N2 - This study, taking three types of aluminum alloys 2024-T351, 6061-T6 and 7075-T6 as experimental materials, conducted single V-groove GTAW (gas tungsten arc welding) butt-welding to analyze and compare the magnitude and differences of residual stress in the three aluminum alloys at different single V-groove angles and in restrained or unrestrained conditions. The results show that the larger the grooving angle of butt joint, the higher the residual tensile stress. Too small grooving angle will lead to dramatic differences due to the amount of welding bead filler metal and pre-set joint geometry. Therefore, only an appropriate grooving angle can reduce residual stress. While welding, weldment in restrained condition will lead to a larger residual stress. Also, a residual stress will arise from the restraint position. The ultimate residual stress of weldment is determined by material yield strength at equilibrium temperature. The higher the yield strength at equilibrium temperature, the higher the material residual stress. Because of its larger thermal conductivity, aluminum alloy test specimens have small temperature differential. Therefore, the residual tensile stress of all materials is lower than their yield strength.

AB - This study, taking three types of aluminum alloys 2024-T351, 6061-T6 and 7075-T6 as experimental materials, conducted single V-groove GTAW (gas tungsten arc welding) butt-welding to analyze and compare the magnitude and differences of residual stress in the three aluminum alloys at different single V-groove angles and in restrained or unrestrained conditions. The results show that the larger the grooving angle of butt joint, the higher the residual tensile stress. Too small grooving angle will lead to dramatic differences due to the amount of welding bead filler metal and pre-set joint geometry. Therefore, only an appropriate grooving angle can reduce residual stress. While welding, weldment in restrained condition will lead to a larger residual stress. Also, a residual stress will arise from the restraint position. The ultimate residual stress of weldment is determined by material yield strength at equilibrium temperature. The higher the yield strength at equilibrium temperature, the higher the material residual stress. Because of its larger thermal conductivity, aluminum alloy test specimens have small temperature differential. Therefore, the residual tensile stress of all materials is lower than their yield strength.

KW - Aluminum alloy

KW - Hole-drilling strain-gage method

KW - Residual stress

KW - Single-V groove

UR - http://www.scopus.com/inward/record.url?scp=34248150263&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34248150263&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:34248150263

VL - 23

SP - 217

EP - 222

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

SN - 1005-0302

IS - 2

ER -