Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld
© 2015 The Japan Institute of Metals and Materials. Butt joint friction stir welding (FSW) of aluminum alloy 6061-T651 rolled plate was prepared and the weld specimens were post weld heat treated (PWHT) by solution heat treatment and aging. The hardness, toughness and fracture surface of the PWHT an...
Saved in:
Main Authors: | , , , , , |
---|---|
Format: | Journal |
Published: |
2018
|
Subjects: | |
Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84933503674&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/54523 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
id |
th-cmuir.6653943832-54523 |
---|---|
record_format |
dspace |
spelling |
th-cmuir.6653943832-545232018-09-04T10:26:07Z Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld Jitlada Boonma Sookkaew Khammuangsa Kanokwan Uttarasak Jirapan Dutchaneephet Chatdanai Boonruang Narin Sirikulrat Engineering Materials Science Physics and Astronomy © 2015 The Japan Institute of Metals and Materials. Butt joint friction stir welding (FSW) of aluminum alloy 6061-T651 rolled plate was prepared and the weld specimens were post weld heat treated (PWHT) by solution heat treatment and aging. The hardness, toughness and fracture surface of the PWHT and as-welded specimens were investigated and their relationships were discussed. The effects of FSW are found to soften the nugget zone and thermomechanical affected zone in the as-welded condition, however, the PWHT can provide a full strength recovery in the whole weld specimen. Results from the analysis of relationship of the hardness-tensile strength found that the tensile strength (TS) is linearly proportional to the Vickers hardness number (VHN) with a TS to VHN ratio of about 2.75. However, the linear proportion with a negative slope of the hardness-toughness relationship is observed with the characteristic toughness constant of about 40 J for AA 6061. From fracture surface investigation, the unique fracture characteristics comprising double V grooves and double sharp hills with strips equivalent to the cup and cone fracture of the tensile fracture of medium ductile alloys are observed. 2018-09-04T10:15:23Z 2018-09-04T10:15:23Z 2015-01-01 Journal 13459678 2-s2.0-84933503674 10.2320/matertrans.M2015074 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84933503674&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/54523 |
institution |
Chiang Mai University |
building |
Chiang Mai University Library |
country |
Thailand |
collection |
CMU Intellectual Repository |
topic |
Engineering Materials Science Physics and Astronomy |
spellingShingle |
Engineering Materials Science Physics and Astronomy Jitlada Boonma Sookkaew Khammuangsa Kanokwan Uttarasak Jirapan Dutchaneephet Chatdanai Boonruang Narin Sirikulrat Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld |
description |
© 2015 The Japan Institute of Metals and Materials. Butt joint friction stir welding (FSW) of aluminum alloy 6061-T651 rolled plate was prepared and the weld specimens were post weld heat treated (PWHT) by solution heat treatment and aging. The hardness, toughness and fracture surface of the PWHT and as-welded specimens were investigated and their relationships were discussed. The effects of FSW are found to soften the nugget zone and thermomechanical affected zone in the as-welded condition, however, the PWHT can provide a full strength recovery in the whole weld specimen. Results from the analysis of relationship of the hardness-tensile strength found that the tensile strength (TS) is linearly proportional to the Vickers hardness number (VHN) with a TS to VHN ratio of about 2.75. However, the linear proportion with a negative slope of the hardness-toughness relationship is observed with the characteristic toughness constant of about 40 J for AA 6061. From fracture surface investigation, the unique fracture characteristics comprising double V grooves and double sharp hills with strips equivalent to the cup and cone fracture of the tensile fracture of medium ductile alloys are observed. |
format |
Journal |
author |
Jitlada Boonma Sookkaew Khammuangsa Kanokwan Uttarasak Jirapan Dutchaneephet Chatdanai Boonruang Narin Sirikulrat |
author_facet |
Jitlada Boonma Sookkaew Khammuangsa Kanokwan Uttarasak Jirapan Dutchaneephet Chatdanai Boonruang Narin Sirikulrat |
author_sort |
Jitlada Boonma |
title |
Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld |
title_short |
Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld |
title_full |
Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld |
title_fullStr |
Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld |
title_full_unstemmed |
Post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir Butt weld |
title_sort |
post-weld heat treatment effects on hardness and impact strength of aluminum alloy 6061 friction stir butt weld |
publishDate |
2018 |
url |
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84933503674&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/54523 |
_version_ |
1681424336270917632 |