Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age Hardening
The contribution describes influence of the age-hardening consist of solution treatment at 515<sub> </sub>°C with holding time 4 hours, water quenching at 40<sub> </sub>°C and artificial aging at different temperature 150<sub> </sub>°C, 170<sub> </sub>...
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2012-09-01
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| Series: | Medžiagotyra |
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| Online Access: | http://matsc.ktu.lt/index.php/MatSc/article/view/2430 |
| _version_ | 1818039719530856448 |
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| author | Lenka HURTALOVÁ Juraj BELAN Eva TILLOVÁ Mária CHALUPOVÁ |
| author_facet | Lenka HURTALOVÁ Juraj BELAN Eva TILLOVÁ Mária CHALUPOVÁ |
| author_sort | Lenka HURTALOVÁ |
| collection | DOAJ |
| description | The contribution describes influence of the age-hardening consist of solution treatment at 515<sub> </sub>°C with holding time 4 hours, water quenching at 40<sub> </sub>°C and artificial aging at different temperature 150<sub> </sub>°C, 170<sub> </sub>°C and 190<sub> </sub>°C with different holding time 2, 4, 8, 16 and 32 hours on mechanical properties (tensile strength and Brinell hardness) and changes in morphology of eutectic Si, Fe-rich and Cu-rich intermetallic phases in secondary (recycled) AlSi9Cu3 cast alloy. A combination of different analytical techniques (light microscopy upon black-white and colour etching, scanning electron microscopy (SEM) upon deep etching and energy dispersive X-ray analysis (EDX)) were therefore been used for the identification of the various phases. Quantitative study of changes in morphology of eutectic Si, Cu-rich and Fe-rich phases was carried out using Image Analyzer software NIS-Elements. Mechanical properties were measured in line with EN ISO. Age-hardening led to changes in microstructure include the spheroidization and coarsening of eutectic silicon, gradual disintegration, shortening and thinning of Fe- rich intermetallic phases, the dissolution of precipitates and the precipitation of finer hardening phase (Al<sub>2</sub>Cu) further increase in the hardness and tensile strength in the alloy.<p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.18.3.2430">http://dx.doi.org/10.5755/j01.ms.18.3.2430</a></p> |
| first_indexed | 2024-12-10T08:03:06Z |
| format | Article |
| id | doaj.art-53613243c71a48bd96a51a44fe895ecf |
| institution | Directory Open Access Journal |
| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-12-10T08:03:06Z |
| publishDate | 2012-09-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-53613243c71a48bd96a51a44fe895ecf2022-12-22T01:56:45ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892012-09-0118322823310.5755/j01.ms.18.3.24301504Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age HardeningLenka HURTALOVÁ0Juraj BELAN1Eva TILLOVÁ2Mária CHALUPOVÁ3University of ŽilinaUniversity of ŽilinaUniversity of ŽilinaUniversity of ŽilinaThe contribution describes influence of the age-hardening consist of solution treatment at 515<sub> </sub>°C with holding time 4 hours, water quenching at 40<sub> </sub>°C and artificial aging at different temperature 150<sub> </sub>°C, 170<sub> </sub>°C and 190<sub> </sub>°C with different holding time 2, 4, 8, 16 and 32 hours on mechanical properties (tensile strength and Brinell hardness) and changes in morphology of eutectic Si, Fe-rich and Cu-rich intermetallic phases in secondary (recycled) AlSi9Cu3 cast alloy. A combination of different analytical techniques (light microscopy upon black-white and colour etching, scanning electron microscopy (SEM) upon deep etching and energy dispersive X-ray analysis (EDX)) were therefore been used for the identification of the various phases. Quantitative study of changes in morphology of eutectic Si, Cu-rich and Fe-rich phases was carried out using Image Analyzer software NIS-Elements. Mechanical properties were measured in line with EN ISO. Age-hardening led to changes in microstructure include the spheroidization and coarsening of eutectic silicon, gradual disintegration, shortening and thinning of Fe- rich intermetallic phases, the dissolution of precipitates and the precipitation of finer hardening phase (Al<sub>2</sub>Cu) further increase in the hardness and tensile strength in the alloy.<p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.18.3.2430">http://dx.doi.org/10.5755/j01.ms.18.3.2430</a></p>http://matsc.ktu.lt/index.php/MatSc/article/view/2430Al-Si-Cu cast alloyssolution treatmentage-hardeningCu-rich phase |
| spellingShingle | Lenka HURTALOVÁ Juraj BELAN Eva TILLOVÁ Mária CHALUPOVÁ Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age Hardening Medžiagotyra Al-Si-Cu cast alloys solution treatment age-hardening Cu-rich phase |
| title | Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age Hardening |
| title_full | Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age Hardening |
| title_fullStr | Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age Hardening |
| title_full_unstemmed | Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age Hardening |
| title_short | Changes in Structural Characteristics of Hypoeutectic Al-Si Cast Alloy after Age Hardening |
| title_sort | changes in structural characteristics of hypoeutectic al si cast alloy after age hardening |
| topic | Al-Si-Cu cast alloys solution treatment age-hardening Cu-rich phase |
| url | http://matsc.ktu.lt/index.php/MatSc/article/view/2430 |
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