Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast Alloys
The present study was undertaken to examine the effect of iron, manganese, copper and magnesium on the microstructural characteristics of Al-11%Si-2%Cu-Mg-based alloy referred to as 396 under different working conditions. The results show that strontium (Sr) has high affinity to react with magnesium...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/4/1335 |
| _version_ | 1797478448910827520 |
|---|---|
| author | Adel M. A. Mohamed Ehab Samuel Yasser Zedan Agnes M. Samuel Herbert W. Doty Fawzy H. Samuel |
| author_facet | Adel M. A. Mohamed Ehab Samuel Yasser Zedan Agnes M. Samuel Herbert W. Doty Fawzy H. Samuel |
| author_sort | Adel M. A. Mohamed |
| collection | DOAJ |
| description | The present study was undertaken to examine the effect of iron, manganese, copper and magnesium on the microstructural characteristics of Al-11%Si-2%Cu-Mg-based alloy referred to as 396 under different working conditions. The results show that strontium (Sr) has high affinity to react with magnesium (Mg), resulting in reduced effectiveness as eutectic silicon modifier or age hardening agent. In addition, Sr alters the sequence of the precipitation of the α-AlFeMnSi phase from post-eutectic to pro-eutectic which would harden the soft α-Aluminum matrix. The mechanism is still under investigation. The interactions between iron (Fe) and Mg and Sr-Mg result in the formation of serval dissolvable intermetallics during the solutionizing treatment such as β-AlFeSi, π-AlFeMgSi and Q-AlMgSiCu phases. The study also emphasizes the role of modification and grain refining as well as intermetallics in porosity formation and hardness of samples aged in the temperature range 155–240 °C. |
| first_indexed | 2024-03-09T21:32:05Z |
| format | Article |
| id | doaj.art-14c459d3b66542ccbd6d5a337bb27f2d |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T21:32:05Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-14c459d3b66542ccbd6d5a337bb27f2d2023-11-23T20:51:38ZengMDPI AGMaterials1996-19442022-02-01154133510.3390/ma15041335Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast AlloysAdel M. A. Mohamed0Ehab Samuel1Yasser Zedan2Agnes M. Samuel3Herbert W. Doty4Fawzy H. Samuel5Metallurgical and Materials Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University, Suez 43721, EgyptDépartement des Sciences Appliquées, Université du Québec à Chicoutimi, Saguenay, QC G7H 2B1, CanadaÉcole de Technologie Supérieure, Département de Génie Mécanique, Montréal, QC H3C 1K3, CanadaDépartement des Sciences Appliquées, Université du Québec à Chicoutimi, Saguenay, QC G7H 2B1, CanadaGeneral Motors Global Technology Center, Materials Technology, Estes Bldg, 30003 Fisher Brothers Rd., Warren, MI 48093-2350, USADépartement des Sciences Appliquées, Université du Québec à Chicoutimi, Saguenay, QC G7H 2B1, CanadaThe present study was undertaken to examine the effect of iron, manganese, copper and magnesium on the microstructural characteristics of Al-11%Si-2%Cu-Mg-based alloy referred to as 396 under different working conditions. The results show that strontium (Sr) has high affinity to react with magnesium (Mg), resulting in reduced effectiveness as eutectic silicon modifier or age hardening agent. In addition, Sr alters the sequence of the precipitation of the α-AlFeMnSi phase from post-eutectic to pro-eutectic which would harden the soft α-Aluminum matrix. The mechanism is still under investigation. The interactions between iron (Fe) and Mg and Sr-Mg result in the formation of serval dissolvable intermetallics during the solutionizing treatment such as β-AlFeSi, π-AlFeMgSi and Q-AlMgSiCu phases. The study also emphasizes the role of modification and grain refining as well as intermetallics in porosity formation and hardness of samples aged in the temperature range 155–240 °C.https://www.mdpi.com/1996-1944/15/4/1335Al-Si alloysintermetallicssolidificationphase identificationEPMAporosity |
| spellingShingle | Adel M. A. Mohamed Ehab Samuel Yasser Zedan Agnes M. Samuel Herbert W. Doty Fawzy H. Samuel Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast Alloys Materials Al-Si alloys intermetallics solidification phase identification EPMA porosity |
| title | Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast Alloys |
| title_full | Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast Alloys |
| title_fullStr | Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast Alloys |
| title_full_unstemmed | Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast Alloys |
| title_short | Intermetallics Formation during Solidification of Al-Si-Cu-Mg Cast Alloys |
| title_sort | intermetallics formation during solidification of al si cu mg cast alloys |
| topic | Al-Si alloys intermetallics solidification phase identification EPMA porosity |
| url | https://www.mdpi.com/1996-1944/15/4/1335 |
| work_keys_str_mv | AT adelmamohamed intermetallicsformationduringsolidificationofalsicumgcastalloys AT ehabsamuel intermetallicsformationduringsolidificationofalsicumgcastalloys AT yasserzedan intermetallicsformationduringsolidificationofalsicumgcastalloys AT agnesmsamuel intermetallicsformationduringsolidificationofalsicumgcastalloys AT herbertwdoty intermetallicsformationduringsolidificationofalsicumgcastalloys AT fawzyhsamuel intermetallicsformationduringsolidificationofalsicumgcastalloys |