The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of Mn
Secondary-cast aluminum alloys have increasing industrial applications. Their biggest deficiency is their impurity content, especially Fe, which has low solubility in Al and almost all the content creates intermetallic phases. This work examines the effect of higher Fe content on the microstructure...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/8/1943 |
| _version_ | 1797537881183485952 |
|---|---|
| author | Lenka Kuchariková Denisa Medvecká Eva Tillová Juraj Belan Michaela Kritikos Mária Chalupová Milan Uhríčik |
| author_facet | Lenka Kuchariková Denisa Medvecká Eva Tillová Juraj Belan Michaela Kritikos Mária Chalupová Milan Uhríčik |
| author_sort | Lenka Kuchariková |
| collection | DOAJ |
| description | Secondary-cast aluminum alloys have increasing industrial applications. Their biggest deficiency is their impurity content, especially Fe, which has low solubility in Al and almost all the content creates intermetallic phases. This work examines the effect of higher Fe content on the microstructure and properties of A356.0 alloy. At the same time, no other possibility existed to affecting the brittleness of the formation of the β phases. The calculation of Fe<sub>crit</sub>, ratio of Mn/Fe, quantitative and computed tomography analysis of porosity and Fe plate-like phases, measurement of mechanical and fatigue properties, and fractography analysis were performed in this study. The results show that gravity die casting into a sand mold, and the non-usage of Mn addition or heat treatment, do not have a negative effect on increasing the size of the Fe-rich plate-like phases. The longest Fe-rich phases have limited the pore growth and ratios, but their higher thickness led to greater porosity formation. The mechanical and fatigue properties correlate with the Fe<sub>crit</sub> level and the highest were for the experimental alloy with 0.454 wt.% of Fe. The experimental results confirmed the fact that if the Fe plate-like phases have a length of up to 50 µm, the fatigue properties depend more on the size of porosity. If the length of the Fe needles is more than 50 µm, then the properties are mainly affected by the length of these Fe phases. |
| first_indexed | 2024-03-10T12:22:33Z |
| format | Article |
| id | doaj.art-bef55eebdadd4c1a92edabf0728a59db |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T12:22:33Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-bef55eebdadd4c1a92edabf0728a59db2023-11-21T15:24:46ZengMDPI AGMaterials1996-19442021-04-01148194310.3390/ma14081943The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of MnLenka Kuchariková0Denisa Medvecká1Eva Tillová2Juraj Belan3Michaela Kritikos4Mária Chalupová5Milan Uhríčik6Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 01 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 01 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 01 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 01 Žilina, SlovakiaFaculty of Material Science and Technology in Trnava, Slovak University of Technology in Bratislava, J. Bottu 25, 917 24 Trnava, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 01 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 01 Žilina, SlovakiaSecondary-cast aluminum alloys have increasing industrial applications. Their biggest deficiency is their impurity content, especially Fe, which has low solubility in Al and almost all the content creates intermetallic phases. This work examines the effect of higher Fe content on the microstructure and properties of A356.0 alloy. At the same time, no other possibility existed to affecting the brittleness of the formation of the β phases. The calculation of Fe<sub>crit</sub>, ratio of Mn/Fe, quantitative and computed tomography analysis of porosity and Fe plate-like phases, measurement of mechanical and fatigue properties, and fractography analysis were performed in this study. The results show that gravity die casting into a sand mold, and the non-usage of Mn addition or heat treatment, do not have a negative effect on increasing the size of the Fe-rich plate-like phases. The longest Fe-rich phases have limited the pore growth and ratios, but their higher thickness led to greater porosity formation. The mechanical and fatigue properties correlate with the Fe<sub>crit</sub> level and the highest were for the experimental alloy with 0.454 wt.% of Fe. The experimental results confirmed the fact that if the Fe plate-like phases have a length of up to 50 µm, the fatigue properties depend more on the size of porosity. If the length of the Fe needles is more than 50 µm, then the properties are mainly affected by the length of these Fe phases.https://www.mdpi.com/1996-1944/14/8/1943β-Al<sub>5</sub>FeSi intermetallic phaseshigher content of Fedismissing Mn additionproperties of aluminum alloys with higher Fe content |
| spellingShingle | Lenka Kuchariková Denisa Medvecká Eva Tillová Juraj Belan Michaela Kritikos Mária Chalupová Milan Uhríčik The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of Mn Materials β-Al<sub>5</sub>FeSi intermetallic phases higher content of Fe dismissing Mn addition properties of aluminum alloys with higher Fe content |
| title | The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of Mn |
| title_full | The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of Mn |
| title_fullStr | The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of Mn |
| title_full_unstemmed | The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of Mn |
| title_short | The Effect of the β-Al<sub>5</sub>FeSi Phases on Microstructure, Mechanical and Fatigue Properties in A356.0 Cast Alloys with Higher Fe Content without Additional Alloying of Mn |
| title_sort | effect of the β al sub 5 sub fesi phases on microstructure mechanical and fatigue properties in a356 0 cast alloys with higher fe content without additional alloying of mn |
| topic | β-Al<sub>5</sub>FeSi intermetallic phases higher content of Fe dismissing Mn addition properties of aluminum alloys with higher Fe content |
| url | https://www.mdpi.com/1996-1944/14/8/1943 |
| work_keys_str_mv | AT lenkakucharikova theeffectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT denisamedvecka theeffectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT evatillova theeffectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT jurajbelan theeffectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT michaelakritikos theeffectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT mariachalupova theeffectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT milanuhricik theeffectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT lenkakucharikova effectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT denisamedvecka effectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT evatillova effectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT jurajbelan effectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT michaelakritikos effectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT mariachalupova effectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn AT milanuhricik effectofthebalsub5subfesiphasesonmicrostructuremechanicalandfatiguepropertiesina3560castalloyswithhigherfecontentwithoutadditionalalloyingofmn |