Thermo-mechanical treatments of Sc- and Mg-modified Al–Cu alloy welds
High-strength heat-treatable aluminum alloy AA2219 finds application in aerospace industries. Though it has good weldability, with alternating current–tungsten inert gas welding, the joint efficiency obtained is only 40%, particularly in thicker plates. In the present study, an attempt has been made...
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| Veröffentlicht in: | International journal of advanced manufacturing technology 2009-11, Vol.45 (1-2), p.16-24 |
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| creator | Koteswara Rao, S. R. Kamsala Devi, B. Sreenivasa Rao, K. Prasad Rao, K. |
| description | High-strength heat-treatable aluminum alloy AA2219 finds application in aerospace industries. Though it has good weldability, with alternating current–tungsten inert gas welding, the joint efficiency obtained is only 40%, particularly in thicker plates. In the present study, an attempt has been made to improve the weld metal properties by modifying the chemistry of fusion zone and post-weld thermo-mechanical treatments. Fillers were made through casting route by melting conventional 2319 filler with Sc and Mg. Two levels of Sc (0.3% and 0.6%) and four levels of Mg (0.3% to 0.6%) were varied. Compressive deformation was done on the fusion zone of the weld to get three levels of percentage of reduction (4%, 8%, and 12%). As welded specimens and welds after compressive deformation, those were subjected to post-weld aging treatments at 190ºC for different periods up to 100 h. Compressive deformation on the welds made with modified filler of 2319 with Sc and Mg resulted in significant improvement in the weld metal strength. |
| doi_str_mv | 10.1007/s00170-009-1936-8 |
| format | Article |
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As welded specimens and welds after compressive deformation, those were subjected to post-weld aging treatments at 190ºC for different periods up to 100 h. Compressive deformation on the welds made with modified filler of 2319 with Sc and Mg resulted in significant improvement in the weld metal strength.</description><identifier>ISSN: 0268-3768</identifier><identifier>EISSN: 1433-3015</identifier><identifier>DOI: 10.1007/s00170-009-1936-8</identifier><language>eng</language><publisher>London: Springer-Verlag</publisher><subject>Aerospace industry ; Aluminum base alloys ; CAE) and Design ; Computer-Aided Engineering (CAD ; Copper ; Deformation ; Engineering ; Fillers ; Gas tungsten arc welding ; Gas welding ; Heat treatment ; High strength alloys ; Industrial and Production Engineering ; Inert gas welding ; Magnesium ; Mechanical Engineering ; Media Management ; Melting ; Organic chemistry ; Original Article ; Rare gases ; Scandium ; Thermomechanical treatment ; Weld metal ; Welded joints</subject><ispartof>International journal of advanced manufacturing technology, 2009-11, Vol.45 (1-2), p.16-24</ispartof><rights>Springer-Verlag London Limited 2009</rights><rights>The International Journal of Advanced Manufacturing Technology is a copyright of Springer, (2009). 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Compressive deformation on the welds made with modified filler of 2319 with Sc and Mg resulted in significant improvement in the weld metal strength.</description><subject>Aerospace industry</subject><subject>Aluminum base alloys</subject><subject>CAE) and Design</subject><subject>Computer-Aided Engineering (CAD</subject><subject>Copper</subject><subject>Deformation</subject><subject>Engineering</subject><subject>Fillers</subject><subject>Gas tungsten arc welding</subject><subject>Gas welding</subject><subject>Heat treatment</subject><subject>High strength alloys</subject><subject>Industrial and Production Engineering</subject><subject>Inert gas welding</subject><subject>Magnesium</subject><subject>Mechanical Engineering</subject><subject>Media Management</subject><subject>Melting</subject><subject>Organic chemistry</subject><subject>Original Article</subject><subject>Rare gases</subject><subject>Scandium</subject><subject>Thermomechanical treatment</subject><subject>Weld metal</subject><subject>Welded joints</subject><issn>0268-3768</issn><issn>1433-3015</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kMtKAzEYhYMoWKsP4C7gOprL5DLLUrQKFRfWdchkknbKzKQmU6Q738E39ElMGcGVq39xvnN--AC4JviWYCzvEsZEYoRxiUjJBFInYEIKxhDDhJ-CCaZCISaFOgcXKW0zLYhQE7BYbVzsAuqc3Zi-saaFQ3Rm6Fw_JBg8fLUImr6Gz2vUhbrxjavhrP3-_JrvoWnbcIAfrq3TJTjzpk3u6vdOwdvD_Wr-iJYvi6f5bIksU3RATopKOCoYZlYWRtqyqAUpjOOVL3LmqLeMK8Uqy8uq9FRwbqQqS6yEMISyKbgZd3cxvO9dGvQ27GOfX2pKBS0Ix1xkioyUjSGl6LzexaYz8aAJ1kdfevSlsy999KVV7tCxkzLbr138W_6_9APQyGxk</recordid><startdate>20091101</startdate><enddate>20091101</enddate><creator>Koteswara Rao, S. 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Fillers were made through casting route by melting conventional 2319 filler with Sc and Mg. Two levels of Sc (0.3% and 0.6%) and four levels of Mg (0.3% to 0.6%) were varied. Compressive deformation was done on the fusion zone of the weld to get three levels of percentage of reduction (4%, 8%, and 12%). As welded specimens and welds after compressive deformation, those were subjected to post-weld aging treatments at 190ºC for different periods up to 100 h. Compressive deformation on the welds made with modified filler of 2319 with Sc and Mg resulted in significant improvement in the weld metal strength.</abstract><cop>London</cop><pub>Springer-Verlag</pub><doi>10.1007/s00170-009-1936-8</doi><tpages>9</tpages></addata></record> |
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| subjects | Aerospace industry Aluminum base alloys CAE) and Design Computer-Aided Engineering (CAD Copper Deformation Engineering Fillers Gas tungsten arc welding Gas welding Heat treatment High strength alloys Industrial and Production Engineering Inert gas welding Magnesium Mechanical Engineering Media Management Melting Organic chemistry Original Article Rare gases Scandium Thermomechanical treatment Weld metal Welded joints |
| title | Thermo-mechanical treatments of Sc- and Mg-modified Al–Cu alloy welds |
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