Microstructural development and mechanical properties of interrupted aged Al-Mg-Si-Cu alloy
The effects of a recently developed interrupted aging procedure on the microstructural development and mechanical properties of the commercial Al-Mg-Si-Cu alloy 6061 have been studied using transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and mechanical testing. This...
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| Veröffentlicht in: | Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2006-10, Vol.37 (10), p.3119-3130 |
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| container_title | Metallurgical and materials transactions. A, Physical metallurgy and materials science |
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| creator | BUHA, J LUMLEY, R. N CROSKY, A. G |
| description | The effects of a recently developed interrupted aging procedure on the microstructural development and mechanical properties of the commercial Al-Mg-Si-Cu alloy 6061 have been studied using transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and mechanical testing. This so-called T616 temper involves partially aging the alloy at a typical T6 temperature (the underaging stage), quenching, then holding at a reduced temperature (in this case 65DGC) to facilitate further hardening (the secondary aging stage), prior to final aging to peak properties at, or close to, the initial aging (T6) temperature (the reaging stage). The T616 aging treatment produces simultaneous increases in tensile properties, hardness, and toughness, as compared with conventional T6. The overall improvement in the mechanical properties of 6061 T616 is associated with the formation of a greater number of finer, and more densely dispersed, beta" precipitates in the final microstructure. Secondary precipitation took place during the interrupted aging stage of the T616 temper, resulting in the formation of a large number of Guinier-Preston (GP) zones that served as precursors to the needlelike beta" precipitates when elevated temperature aging was resumed. |
| doi_str_mv | 10.1007/s11661-006-0192-x |
| format | Article |
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N ; CROSKY, A. G</creator><creatorcontrib>BUHA, J ; LUMLEY, R. N ; CROSKY, A. G</creatorcontrib><description>The effects of a recently developed interrupted aging procedure on the microstructural development and mechanical properties of the commercial Al-Mg-Si-Cu alloy 6061 have been studied using transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and mechanical testing. This so-called T616 temper involves partially aging the alloy at a typical T6 temperature (the underaging stage), quenching, then holding at a reduced temperature (in this case 65DGC) to facilitate further hardening (the secondary aging stage), prior to final aging to peak properties at, or close to, the initial aging (T6) temperature (the reaging stage). The T616 aging treatment produces simultaneous increases in tensile properties, hardness, and toughness, as compared with conventional T6. The overall improvement in the mechanical properties of 6061 T616 is associated with the formation of a greater number of finer, and more densely dispersed, beta" precipitates in the final microstructure. Secondary precipitation took place during the interrupted aging stage of the T616 temper, resulting in the formation of a large number of Guinier-Preston (GP) zones that served as precursors to the needlelike beta" precipitates when elevated temperature aging was resumed.</description><identifier>ISSN: 1073-5623</identifier><identifier>EISSN: 1543-1940</identifier><identifier>DOI: 10.1007/s11661-006-0192-x</identifier><identifier>CODEN: MMTAEB</identifier><language>eng</language><publisher>New York, NY: Springer</publisher><subject>Aluminum alloys ; Aluminum magnesium silicon alloys ; Applied sciences ; Differential scanning calorimetry ; Exact sciences and technology ; Fracture toughness ; Mechanical properties ; Mechanical properties and methods of testing. Rheology. 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The T616 aging treatment produces simultaneous increases in tensile properties, hardness, and toughness, as compared with conventional T6. The overall improvement in the mechanical properties of 6061 T616 is associated with the formation of a greater number of finer, and more densely dispersed, beta" precipitates in the final microstructure. Secondary precipitation took place during the interrupted aging stage of the T616 temper, resulting in the formation of a large number of Guinier-Preston (GP) zones that served as precursors to the needlelike beta" precipitates when elevated temperature aging was resumed.</description><subject>Aluminum alloys</subject><subject>Aluminum magnesium silicon alloys</subject><subject>Applied sciences</subject><subject>Differential scanning calorimetry</subject><subject>Exact sciences and technology</subject><subject>Fracture toughness</subject><subject>Mechanical properties</subject><subject>Mechanical properties and methods of testing. Rheology. 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A, Physical metallurgy and materials science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>BUHA, J</au><au>LUMLEY, R. N</au><au>CROSKY, A. G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructural development and mechanical properties of interrupted aged Al-Mg-Si-Cu alloy</atitle><jtitle>Metallurgical and materials transactions. A, Physical metallurgy and materials science</jtitle><date>2006-10-01</date><risdate>2006</risdate><volume>37</volume><issue>10</issue><spage>3119</spage><epage>3130</epage><pages>3119-3130</pages><issn>1073-5623</issn><eissn>1543-1940</eissn><coden>MMTAEB</coden><abstract>The effects of a recently developed interrupted aging procedure on the microstructural development and mechanical properties of the commercial Al-Mg-Si-Cu alloy 6061 have been studied using transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and mechanical testing. This so-called T616 temper involves partially aging the alloy at a typical T6 temperature (the underaging stage), quenching, then holding at a reduced temperature (in this case 65DGC) to facilitate further hardening (the secondary aging stage), prior to final aging to peak properties at, or close to, the initial aging (T6) temperature (the reaging stage). The T616 aging treatment produces simultaneous increases in tensile properties, hardness, and toughness, as compared with conventional T6. The overall improvement in the mechanical properties of 6061 T616 is associated with the formation of a greater number of finer, and more densely dispersed, beta" precipitates in the final microstructure. Secondary precipitation took place during the interrupted aging stage of the T616 temper, resulting in the formation of a large number of Guinier-Preston (GP) zones that served as precursors to the needlelike beta" precipitates when elevated temperature aging was resumed.</abstract><cop>New York, NY</cop><pub>Springer</pub><doi>10.1007/s11661-006-0192-x</doi><tpages>12</tpages></addata></record> |
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| subjects | Aluminum alloys Aluminum magnesium silicon alloys Applied sciences Differential scanning calorimetry Exact sciences and technology Fracture toughness Mechanical properties Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Microstructure Quenching Solid solutions Transmission electron microscopy |
| title | Microstructural development and mechanical properties of interrupted aged Al-Mg-Si-Cu alloy |
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