Mechanical Properties and Microstructural Characteristics of Friction Welded Dissimilar Joints of Aluminium Alloys
Joining of similar and dissimilar combinations of aluminium alloys 2024 and 6061 were performed using friction welding technique. Microstructure, hardness and tensile properties of the joints were characterized. Microstructure of the alloy were found to change significantly across the joint such as...
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| Veröffentlicht in: | Transactions of the Indian Institute of Metals 2018, Vol.71 (1), p.91-97 |
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| creator | Bharathi, S. R. Sundara Rajeshkumar, R. Rose, A. Razal Balasubramanian, V. |
| description | Joining of similar and dissimilar combinations of aluminium alloys 2024 and 6061 were performed using friction welding technique. Microstructure, hardness and tensile properties of the joints were characterized. Microstructure of the alloy were found to change significantly across the joint such as fully deformed, partially deformed and undeformed regions due to deformation, frictional heat and alloy characteristics. Extensive fine grain size was observed in the fully deformed region and volume fraction of finer grains was higher in the alloy 2024 as compared to alloy 6061. Hardness was lower in the weld interface region of the similar joints of AA2024 and AA6061. The lower hardness in the dissimilar metal joint was observed in the heat affected zone of alloy 6061. The tensile strengths of the similar joints were 80 and 85% of respective base metal of alloys 2024 and 6061. The strength of the dissimilar metal joint was observed to be similar to the base metal strength of 6061 alloy. Tensile fracture occurred in the region of joints where lower hardness was observed. The maximum elongation were obtained in dissimilar joints of alloys and characterized by scanning electron microscope. It revealed deep dimple patterns unlike what was observed in similar joints. |
| doi_str_mv | 10.1007/s12666-017-1143-5 |
| format | Article |
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The tensile strengths of the similar joints were 80 and 85% of respective base metal of alloys 2024 and 6061. The strength of the dissimilar metal joint was observed to be similar to the base metal strength of 6061 alloy. Tensile fracture occurred in the region of joints where lower hardness was observed. The maximum elongation were obtained in dissimilar joints of alloys and characterized by scanning electron microscope. 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Hardness was lower in the weld interface region of the similar joints of AA2024 and AA6061. The lower hardness in the dissimilar metal joint was observed in the heat affected zone of alloy 6061. The tensile strengths of the similar joints were 80 and 85% of respective base metal of alloys 2024 and 6061. The strength of the dissimilar metal joint was observed to be similar to the base metal strength of 6061 alloy. Tensile fracture occurred in the region of joints where lower hardness was observed. The maximum elongation were obtained in dissimilar joints of alloys and characterized by scanning electron microscope. It revealed deep dimple patterns unlike what was observed in similar joints.</description><subject>Alloys</subject><subject>Aluminum base alloys</subject><subject>Base metal</subject><subject>Chemistry and Materials Science</subject><subject>Concentration (composition)</subject><subject>Corrosion and Coatings</subject><subject>Deformation</subject><subject>Dimpling</subject><subject>Dissimilar material joining</subject><subject>Dissimilar metals</subject><subject>Elongation</subject><subject>Friction welding</subject><subject>Hardness</subject><subject>Heat affected zone</subject><subject>Materials Science</subject><subject>Mechanical properties</subject><subject>Metallic Materials</subject><subject>Microstructure</subject><subject>Technical Paper</subject><subject>Tensile properties</subject><subject>Tribology</subject><issn>0972-2815</issn><issn>0975-1645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kMtOwzAQRS0EEqXwAewssTb4kTjJsiqUh1rBAsTScvygrpK42M6if4_bsmCDNNKMNPfe0RwArgm-JRhXd5FQzjnCpEKEFAyVJ2CCm6pEhBfl6WGmiNakPAcXMW4wZg1lbALCyqi1HJySHXwLfmtCciZCOWi4cir4mMKo0hjyer6WQapkgovJqQi9hYvgVHJ-gJ-m00bDexej610nA3zxbkgH0awbeze4sc9T53fxEpxZ2UVz9dun4GPx8D5_QsvXx-f5bIkUIzwhzVXBjVKcGCspZqxVGltbFbZpm4LyKpeqStpWlumyJZw22GJdU95qg7FiU3BzzN0G_z2amMTGj2HIJwVp6job6rrJKnJU7Z-NwVixDa6XYScIFnu04ohWZLRij1aU2UOPnpi1w5cJf5L_Nf0AtfJ-Cg</recordid><startdate>2018</startdate><enddate>2018</enddate><creator>Bharathi, S. 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R. Sundara</creatorcontrib><creatorcontrib>Rajeshkumar, R.</creatorcontrib><creatorcontrib>Rose, A. Razal</creatorcontrib><creatorcontrib>Balasubramanian, V.</creatorcontrib><collection>CrossRef</collection><jtitle>Transactions of the Indian Institute of Metals</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bharathi, S. R. Sundara</au><au>Rajeshkumar, R.</au><au>Rose, A. 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Extensive fine grain size was observed in the fully deformed region and volume fraction of finer grains was higher in the alloy 2024 as compared to alloy 6061. Hardness was lower in the weld interface region of the similar joints of AA2024 and AA6061. The lower hardness in the dissimilar metal joint was observed in the heat affected zone of alloy 6061. The tensile strengths of the similar joints were 80 and 85% of respective base metal of alloys 2024 and 6061. The strength of the dissimilar metal joint was observed to be similar to the base metal strength of 6061 alloy. Tensile fracture occurred in the region of joints where lower hardness was observed. The maximum elongation were obtained in dissimilar joints of alloys and characterized by scanning electron microscope. It revealed deep dimple patterns unlike what was observed in similar joints.</abstract><cop>New Delhi</cop><pub>Springer India</pub><doi>10.1007/s12666-017-1143-5</doi><tpages>7</tpages></addata></record> |
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| subjects | Alloys Aluminum base alloys Base metal Chemistry and Materials Science Concentration (composition) Corrosion and Coatings Deformation Dimpling Dissimilar material joining Dissimilar metals Elongation Friction welding Hardness Heat affected zone Materials Science Mechanical properties Metallic Materials Microstructure Technical Paper Tensile properties Tribology |
| title | Mechanical Properties and Microstructural Characteristics of Friction Welded Dissimilar Joints of Aluminium Alloys |
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