Cover Image

Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy

Friction stir welding (FSW) between 3 mm thick AA 5052-O aluminum alloy plates was investigated in the present study. Different welded specimens were produced by employing a constant tool traverse speed of 120 mm/min and by varying rotating speeds from 800 to 3000 rpm. The welded joints were charact...

Full description

Saved in:
Bibliographic Details
Main Authors: Moshwan, Raza, Yusof, Farazila, Hassan, Mohamed Mohsen Abdel-Naeim, Rahmat, Sahifulddin M.
Format: Article
Language:English
Published: Elsevier 2015
Subjects:
T Technology (General)
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/13826/1/Effect_of_tool_rotational_speed_on_force_generation.pdf
http://eprints.um.edu.my/13826/
https://doi.org/10.1016/j.matdes.2014.10.043
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.um.eprints.13826
record_format eprints
spelling my.um.eprints.138262019-12-05T06:03:20Z http://eprints.um.edu.my/13826/ Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy Moshwan, Raza Yusof, Farazila Hassan, Mohamed Mohsen Abdel-Naeim Rahmat, Sahifulddin M. T Technology (General) TJ Mechanical engineering and machinery Friction stir welding (FSW) between 3 mm thick AA 5052-O aluminum alloy plates was investigated in the present study. Different welded specimens were produced by employing a constant tool traverse speed of 120 mm/min and by varying rotating speeds from 800 to 3000 rpm. The welded joints were characterized by its appearances, microstructural and mechanical properties at room temperature. The measurement of different forces acted on the tool during the FSW of AA 5052-O plates provided a significant insight to determine the quality of the welded joints. From the appearances of the welded joints it was evident that, except the tool rotational speed of 3000 rpm all other rotational speeds produced sound welded joints with smooth surface. The joint produced at 1000 rpm yielded a maximum tensile strength of 132 MPa which was 74 of the base material strength. Field emission scanning electron microscopy (FESEM) and energy dispersive spectroscopy (EDS) analyses on the stir zone suggested that, beta-Mg2Al3 intermetallic phases of the base material were mechanically fractured, smeared and mixed to different geometries due to tool stirring. The dissolution and redistribution of beta-Mg2Al3 second phase particles in the stir zone had a considerable effect on the reduction of the tensile strength of the welded joints. The reduction in hardness at the nugget zone (NZ) of the welded joints under different tool rotational speeds could be attributed to the dislocation of Mg-rich phases and segregation of Mg solute atoms at grain boundaries, which drew solute Mg atoms away from the alpha-aluminum matrix. (C) 2014 Elsevier Ltd. All rights reserved. Elsevier 2015-02-05 Article PeerReviewed application/pdf en http://eprints.um.edu.my/13826/1/Effect_of_tool_rotational_speed_on_force_generation.pdf Moshwan, Raza and Yusof, Farazila and Hassan, Mohamed Mohsen Abdel-Naeim and Rahmat, Sahifulddin M. (2015) Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy. Materials & Design, 66. pp. 118-128. ISSN 0261-3069 https://doi.org/10.1016/j.matdes.2014.10.043 doi:10.1016/j.matdes.2014.10.043
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic T Technology (General)
TJ Mechanical engineering and machinery
spellingShingle T Technology (General)
TJ Mechanical engineering and machinery
Moshwan, Raza
Yusof, Farazila
Hassan, Mohamed Mohsen Abdel-Naeim
Rahmat, Sahifulddin M.
Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy
description Friction stir welding (FSW) between 3 mm thick AA 5052-O aluminum alloy plates was investigated in the present study. Different welded specimens were produced by employing a constant tool traverse speed of 120 mm/min and by varying rotating speeds from 800 to 3000 rpm. The welded joints were characterized by its appearances, microstructural and mechanical properties at room temperature. The measurement of different forces acted on the tool during the FSW of AA 5052-O plates provided a significant insight to determine the quality of the welded joints. From the appearances of the welded joints it was evident that, except the tool rotational speed of 3000 rpm all other rotational speeds produced sound welded joints with smooth surface. The joint produced at 1000 rpm yielded a maximum tensile strength of 132 MPa which was 74 of the base material strength. Field emission scanning electron microscopy (FESEM) and energy dispersive spectroscopy (EDS) analyses on the stir zone suggested that, beta-Mg2Al3 intermetallic phases of the base material were mechanically fractured, smeared and mixed to different geometries due to tool stirring. The dissolution and redistribution of beta-Mg2Al3 second phase particles in the stir zone had a considerable effect on the reduction of the tensile strength of the welded joints. The reduction in hardness at the nugget zone (NZ) of the welded joints under different tool rotational speeds could be attributed to the dislocation of Mg-rich phases and segregation of Mg solute atoms at grain boundaries, which drew solute Mg atoms away from the alpha-aluminum matrix. (C) 2014 Elsevier Ltd. All rights reserved.
format Article
author Moshwan, Raza
Yusof, Farazila
Hassan, Mohamed Mohsen Abdel-Naeim
Rahmat, Sahifulddin M.
author_facet Moshwan, Raza
Yusof, Farazila
Hassan, Mohamed Mohsen Abdel-Naeim
Rahmat, Sahifulddin M.
author_sort Moshwan, Raza
title Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy
title_short Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy
title_full Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy
title_fullStr Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy
title_full_unstemmed Effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded Al-Mg-Cr-Mn (AA 5052-O) alloy
title_sort effect of tool rotational speed on force generation, microstructure and mechanical properties of friction stir welded al-mg-cr-mn (aa 5052-o) alloy
publisher Elsevier
publishDate 2015
url http://eprints.um.edu.my/13826/1/Effect_of_tool_rotational_speed_on_force_generation.pdf
http://eprints.um.edu.my/13826/
https://doi.org/10.1016/j.matdes.2014.10.043
_version_ 1654960657883201536
score 13.211869

Similar Items