A New Approach to Determine Tensile Stress-Strain Evolution in Semi-Solid State at Near-Solidus Temperature of Aluminum Alloys
Accurate determination of the materials' strength and ductility in the semi-solid state at near-solidus temperatures is essential, but it remains a challenging task. This study aimed to develop a new method to determine the stress-strain evolution in the semi-solid state of aluminum alloys with...
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| Veröffentlicht in: | Metals (Basel ) 2021-03, Vol.11 (3), p.396, Article 396 |
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| creator | Rakhmonov, Jovid Qassem, Mohamed Larouche, Daniel Liu, Kun Javidani, Mousa Colbert, Josee Chen, X-Grant |
| description | Accurate determination of the materials' strength and ductility in the semi-solid state at near-solidus temperatures is essential, but it remains a challenging task. This study aimed to develop a new method to determine the stress-strain evolution in the semi-solid state of aluminum alloys within the Gleeble 3800 unit. Stress evolution was determined by the newly developed "L-gauge" method, which converted the displacement of the "restrained" jaw, measured using an L-gauge, into the force. This method gives the possibility to determine the flow stress more accurately, especially for the very low stress rang (1-10 MPa) in the semi-solid state at near-solidus temperatures. The digital image correlation technique implemented in the Gleeble unit allowed effective measurement of the heterogeneous strain fields evolving within the specimen under tensile loading. Therefore, the stress-strain curves measured in the semi-solid state help to better understand the alloy's susceptibility to hot tearing. The results of an AA6111 alloy under different liquid fractions (2.8% at 535 degrees C and 5.8% at 571 degrees C) were demonstrated. The reliable stress-strain data and heterogenous strain distribution are beneficial to develop the thermomechanical models and hot-tearing criteria. |
| doi_str_mv | 10.3390/met11030396 |
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This study aimed to develop a new method to determine the stress-strain evolution in the semi-solid state of aluminum alloys within the Gleeble 3800 unit. Stress evolution was determined by the newly developed "L-gauge" method, which converted the displacement of the "restrained" jaw, measured using an L-gauge, into the force. This method gives the possibility to determine the flow stress more accurately, especially for the very low stress rang (1-10 MPa) in the semi-solid state at near-solidus temperatures. The digital image correlation technique implemented in the Gleeble unit allowed effective measurement of the heterogeneous strain fields evolving within the specimen under tensile loading. Therefore, the stress-strain curves measured in the semi-solid state help to better understand the alloy's susceptibility to hot tearing. The results of an AA6111 alloy under different liquid fractions (2.8% at 535 degrees C and 5.8% at 571 degrees C) were demonstrated. The reliable stress-strain data and heterogenous strain distribution are beneficial to develop the thermomechanical models and hot-tearing criteria.</description><identifier>ISSN: 2075-4701</identifier><identifier>EISSN: 2075-4701</identifier><identifier>DOI: 10.3390/met11030396</identifier><language>eng</language><publisher>BASEL: Mdpi</publisher><subject>Alloys ; Aluminum alloys ; Aluminum base alloys ; digital image correlation ; Digital imaging ; Ductility ; Evolution ; Experiments ; Heat ; high-temperature tensile properties ; Materials Science ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Science & Technology ; semi-solid ; Semisolids ; Solid state ; Solidification ; Solids ; Solidus ; Strain distribution ; Stress measurement ; Stress-strain curves ; Stress-strain relationships ; Tearing ; Technology ; Temperature ; Tensile stress ; Thermomechanical analysis ; Yield strength</subject><ispartof>Metals (Basel ), 2021-03, Vol.11 (3), p.396, Article 396</ispartof><rights>2021. 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This study aimed to develop a new method to determine the stress-strain evolution in the semi-solid state of aluminum alloys within the Gleeble 3800 unit. Stress evolution was determined by the newly developed "L-gauge" method, which converted the displacement of the "restrained" jaw, measured using an L-gauge, into the force. This method gives the possibility to determine the flow stress more accurately, especially for the very low stress rang (1-10 MPa) in the semi-solid state at near-solidus temperatures. The digital image correlation technique implemented in the Gleeble unit allowed effective measurement of the heterogeneous strain fields evolving within the specimen under tensile loading. Therefore, the stress-strain curves measured in the semi-solid state help to better understand the alloy's susceptibility to hot tearing. The results of an AA6111 alloy under different liquid fractions (2.8% at 535 degrees C and 5.8% at 571 degrees C) were demonstrated. 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| subjects | Alloys Aluminum alloys Aluminum base alloys digital image correlation Digital imaging Ductility Evolution Experiments Heat high-temperature tensile properties Materials Science Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Science & Technology semi-solid Semisolids Solid state Solidification Solids Solidus Strain distribution Stress measurement Stress-strain curves Stress-strain relationships Tearing Technology Temperature Tensile stress Thermomechanical analysis Yield strength |
| title | A New Approach to Determine Tensile Stress-Strain Evolution in Semi-Solid State at Near-Solidus Temperature of Aluminum Alloys |
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