Reasons for superior mechanical and corrosion properties of 2219 aluminum alloy electron beam welds
Electron beam welds of aluminum alloy 2219 offer much higher strength compared to gas tungsten arc welds of the same alloy and the reasons for this have not been fully explored. In this study both types of welds were made and mechanical properties were evaluated by tensile testing and pitting corros...
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| Veröffentlicht in: | Materials characterization 2005-11, Vol.55 (4), p.345-354 |
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| creator | Koteswara Rao, S.R. Madhusudhan Reddy, G. Srinivasa Rao, K. Kamaraj, M. Prasad Rao, K. |
| description | Electron beam welds of aluminum alloy 2219 offer much higher strength compared to gas tungsten arc welds of the same alloy and the reasons for this have not been fully explored. In this study both types of welds were made and mechanical properties were evaluated by tensile testing and pitting corrosion resistance by potentio dynamic polarization tests. It is shown that electron beam welds exhibit superior mechanical and corrosion properties. The weld metals have been characterized by scanning electron microscopy; transmission electron microscopy and electron probe micro analysis. Presence of partially disintegrated precipitates in the weld metal, finer micro porosity and uniform distribution of copper in the matrix were found to be the reasons for superior properties of electron beam welds apart from the fine equiaxed grain structure. Transmission electron micrographs of the heat affected zones revealed the precipitate disintegration and over aging in gas tungsten arc welds. |
| doi_str_mv | 10.1016/j.matchar.2005.07.006 |
| format | Article |
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In this study both types of welds were made and mechanical properties were evaluated by tensile testing and pitting corrosion resistance by potentio dynamic polarization tests. It is shown that electron beam welds exhibit superior mechanical and corrosion properties. The weld metals have been characterized by scanning electron microscopy; transmission electron microscopy and electron probe micro analysis. Presence of partially disintegrated precipitates in the weld metal, finer micro porosity and uniform distribution of copper in the matrix were found to be the reasons for superior properties of electron beam welds apart from the fine equiaxed grain structure. Transmission electron micrographs of the heat affected zones revealed the precipitate disintegration and over aging in gas tungsten arc welds.</description><identifier>ISSN: 1044-5803</identifier><identifier>EISSN: 1873-4189</identifier><identifier>DOI: 10.1016/j.matchar.2005.07.006</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>ALUMINIUM ALLOYS ; Aluminum alloy 2219 ; Applied sciences ; COPPER ; Corrosion ; Corrosion environments ; Cross-disciplinary physics: materials science; rheology ; ELECTRON BEAM WELDING ; ELECTRON BEAMS ; ELECTRON MICROPROBE ANALYSIS ; Exact sciences and technology ; GAS TUNGSTEN-ARC WELDING ; Joining, thermal cutting: metallurgical aspects ; MATERIALS SCIENCE ; MECHANICAL PROPERTIES ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Metals. Metallurgy ; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations ; Physics ; PITTING CORROSION ; POROSITY ; SCANNING ELECTRON MICROSCOPY ; Solidification ; TRANSMISSION ELECTRON MICROSCOPY ; TUNGSTEN ; Welding</subject><ispartof>Materials characterization, 2005-11, Vol.55 (4), p.345-354</ispartof><rights>2005</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c398t-c618ed4f145f9633679362b088e0e82aefbbfcc5a482320432632288f74d189e3</citedby><cites>FETCH-LOGICAL-c398t-c618ed4f145f9633679362b088e0e82aefbbfcc5a482320432632288f74d189e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.matchar.2005.07.006$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=17265980$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/20833174$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Koteswara Rao, S.R.</creatorcontrib><creatorcontrib>Madhusudhan Reddy, G.</creatorcontrib><creatorcontrib>Srinivasa Rao, K.</creatorcontrib><creatorcontrib>Kamaraj, M.</creatorcontrib><creatorcontrib>Prasad Rao, K.</creatorcontrib><title>Reasons for superior mechanical and corrosion properties of 2219 aluminum alloy electron beam welds</title><title>Materials characterization</title><description>Electron beam welds of aluminum alloy 2219 offer much higher strength compared to gas tungsten arc welds of the same alloy and the reasons for this have not been fully explored. In this study both types of welds were made and mechanical properties were evaluated by tensile testing and pitting corrosion resistance by potentio dynamic polarization tests. It is shown that electron beam welds exhibit superior mechanical and corrosion properties. The weld metals have been characterized by scanning electron microscopy; transmission electron microscopy and electron probe micro analysis. Presence of partially disintegrated precipitates in the weld metal, finer micro porosity and uniform distribution of copper in the matrix were found to be the reasons for superior properties of electron beam welds apart from the fine equiaxed grain structure. Transmission electron micrographs of the heat affected zones revealed the precipitate disintegration and over aging in gas tungsten arc welds.</description><subject>ALUMINIUM ALLOYS</subject><subject>Aluminum alloy 2219</subject><subject>Applied sciences</subject><subject>COPPER</subject><subject>Corrosion</subject><subject>Corrosion environments</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>ELECTRON BEAM WELDING</subject><subject>ELECTRON BEAMS</subject><subject>ELECTRON MICROPROBE ANALYSIS</subject><subject>Exact sciences and technology</subject><subject>GAS TUNGSTEN-ARC WELDING</subject><subject>Joining, thermal cutting: metallurgical aspects</subject><subject>MATERIALS SCIENCE</subject><subject>MECHANICAL PROPERTIES</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>Metals. Metallurgy</subject><subject>Phase diagrams and microstructures developed by solidification and solid-solid phase transformations</subject><subject>Physics</subject><subject>PITTING CORROSION</subject><subject>POROSITY</subject><subject>SCANNING ELECTRON MICROSCOPY</subject><subject>Solidification</subject><subject>TRANSMISSION ELECTRON MICROSCOPY</subject><subject>TUNGSTEN</subject><subject>Welding</subject><issn>1044-5803</issn><issn>1873-4189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqFkUuLFDEUhYOM4Nj6E4SA6K7KvCpJrUSG8QEDgsysQzp1g2mqkjapUubfe9tucDmrnMV37z3nhJA3nPWccf3h0C9-DT997QVjQ89Mz5h-Rq65NbJT3I5XqJlS3WCZfEFetnZgSFhurkn4Ab6V3GgslbbtCDWhWADX5RT8TH2eaCi1lpZKpsdaEFkTNFoiFYKP1M_bkvK2oJjLI4UZwloR3YNf6B-Yp_aKPI9-bvD68u7Iw-fb-5uv3d33L99uPt11QY527YLmFiYVuRriqKXUZpRa7Jm1wMAKD3G_jyEMXlkhBVNSaCmEtdGoCUOC3JG3572lrcm1kFaMEUrO6MgJZqXkRiH1_kxhll8btNUtqQWYZ5-hbM0Jq9Vg_oHDGQwYvlWI7ljT4uuj48ydincHdynenYp3zDisFefeXQ74hg3G6nNI7f-wEXoY8Sd25OOZA-zkd4J6sgw5wJTqyfFU0hOX_gI1xZti</recordid><startdate>20051101</startdate><enddate>20051101</enddate><creator>Koteswara Rao, S.R.</creator><creator>Madhusudhan Reddy, G.</creator><creator>Srinivasa Rao, K.</creator><creator>Kamaraj, M.</creator><creator>Prasad Rao, K.</creator><general>Elsevier Inc</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SE</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20051101</creationdate><title>Reasons for superior mechanical and corrosion properties of 2219 aluminum alloy electron beam welds</title><author>Koteswara Rao, S.R. ; Madhusudhan Reddy, G. ; Srinivasa Rao, K. ; Kamaraj, M. ; Prasad Rao, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-c618ed4f145f9633679362b088e0e82aefbbfcc5a482320432632288f74d189e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>ALUMINIUM ALLOYS</topic><topic>Aluminum alloy 2219</topic><topic>Applied sciences</topic><topic>COPPER</topic><topic>Corrosion</topic><topic>Corrosion environments</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>ELECTRON BEAM WELDING</topic><topic>ELECTRON BEAMS</topic><topic>ELECTRON MICROPROBE ANALYSIS</topic><topic>Exact sciences and technology</topic><topic>GAS TUNGSTEN-ARC WELDING</topic><topic>Joining, thermal cutting: metallurgical aspects</topic><topic>MATERIALS SCIENCE</topic><topic>MECHANICAL PROPERTIES</topic><topic>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</topic><topic>Metals. 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In this study both types of welds were made and mechanical properties were evaluated by tensile testing and pitting corrosion resistance by potentio dynamic polarization tests. It is shown that electron beam welds exhibit superior mechanical and corrosion properties. The weld metals have been characterized by scanning electron microscopy; transmission electron microscopy and electron probe micro analysis. Presence of partially disintegrated precipitates in the weld metal, finer micro porosity and uniform distribution of copper in the matrix were found to be the reasons for superior properties of electron beam welds apart from the fine equiaxed grain structure. Transmission electron micrographs of the heat affected zones revealed the precipitate disintegration and over aging in gas tungsten arc welds.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><doi>10.1016/j.matchar.2005.07.006</doi><tpages>10</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | ALUMINIUM ALLOYS Aluminum alloy 2219 Applied sciences COPPER Corrosion Corrosion environments Cross-disciplinary physics: materials science rheology ELECTRON BEAM WELDING ELECTRON BEAMS ELECTRON MICROPROBE ANALYSIS Exact sciences and technology GAS TUNGSTEN-ARC WELDING Joining, thermal cutting: metallurgical aspects MATERIALS SCIENCE MECHANICAL PROPERTIES Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics PITTING CORROSION POROSITY SCANNING ELECTRON MICROSCOPY Solidification TRANSMISSION ELECTRON MICROSCOPY TUNGSTEN Welding |
| title | Reasons for superior mechanical and corrosion properties of 2219 aluminum alloy electron beam welds |
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