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Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding

The effect of small tool pin profiles on the microstructures and mechanical properties of 6061 aluminum alloy joints using friction stir welding (FSW) technique was investigated. Three different tool pin profiles: threaded tapered cylindrical (T1), triangular (T2) and square (T3) were used to produc...

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Main Authors: Dawood, Hasan I., Mohammed, Kahtan Sadiq, Rahmat, Azmi, Uday, M. B.
Format: Article
Published: Nonferrous Metals Society of China 2015
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/58386/
http://dx.doi.org/10.1016/S1003-6326(15)63911-5
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spelling my.utm.583862021-12-15T03:05:03Z http://eprints.utm.my/id/eprint/58386/ Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding Dawood, Hasan I. Mohammed, Kahtan Sadiq Rahmat, Azmi Uday, M. B. TJ Mechanical engineering and machinery The effect of small tool pin profiles on the microstructures and mechanical properties of 6061 aluminum alloy joints using friction stir welding (FSW) technique was investigated. Three different tool pin profiles: threaded tapered cylindrical (T1), triangular (T2) and square (T3) were used to produce the joints. The results indicate that the weld joints are notably affected by joining with different tool pin profiles. The triangular tool pin profile produces the best metallurgical and mechanical weld properties compared with other tool pin profiles. Besides, the lowest tensile strength and microhardness are obtained for the joint friction stir welded with square tool pin profile. It is observed that the smaller tool pin profile and shoulder diameter lead to narrow region of heat affected zone (HAZ) and a desired level of softening. The fracture surface examination shows that the joints are also affected when welding with different types of tool pin profiles. The fracture surface shows that the triangular specimen fails with a ductile fracture mode during the tensile test, while the brittle fracture modes are observed in the joints fabricated with other tool pin profiles (T1 and T3). Nonferrous Metals Society of China 2015 Article PeerReviewed Dawood, Hasan I. and Mohammed, Kahtan Sadiq and Rahmat, Azmi and Uday, M. B. (2015) Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding. Transactions Of Nonferrous Metals Society Of Chi, 25 (9). pp. 2856-2865. ISSN 1003-6326 http://dx.doi.org/10.1016/S1003-6326(15)63911-5 DOI:10.1016/S1003-6326(15)63911-5
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Dawood, Hasan I.
Mohammed, Kahtan Sadiq
Rahmat, Azmi
Uday, M. B.
Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding
description The effect of small tool pin profiles on the microstructures and mechanical properties of 6061 aluminum alloy joints using friction stir welding (FSW) technique was investigated. Three different tool pin profiles: threaded tapered cylindrical (T1), triangular (T2) and square (T3) were used to produce the joints. The results indicate that the weld joints are notably affected by joining with different tool pin profiles. The triangular tool pin profile produces the best metallurgical and mechanical weld properties compared with other tool pin profiles. Besides, the lowest tensile strength and microhardness are obtained for the joint friction stir welded with square tool pin profile. It is observed that the smaller tool pin profile and shoulder diameter lead to narrow region of heat affected zone (HAZ) and a desired level of softening. The fracture surface examination shows that the joints are also affected when welding with different types of tool pin profiles. The fracture surface shows that the triangular specimen fails with a ductile fracture mode during the tensile test, while the brittle fracture modes are observed in the joints fabricated with other tool pin profiles (T1 and T3).
format Article
author Dawood, Hasan I.
Mohammed, Kahtan Sadiq
Rahmat, Azmi
Uday, M. B.
author_facet Dawood, Hasan I.
Mohammed, Kahtan Sadiq
Rahmat, Azmi
Uday, M. B.
author_sort Dawood, Hasan I.
title Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding
title_short Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding
title_full Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding
title_fullStr Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding
title_full_unstemmed Effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding
title_sort effect of small tool pin profiles on microstructures and mechanical properties of 6061 aluminum alloy by friction stir welding
publisher Nonferrous Metals Society of China
publishDate 2015
url http://eprints.utm.my/id/eprint/58386/
http://dx.doi.org/10.1016/S1003-6326(15)63911-5
_version_ 1720436874360651776
score 13.211869

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