Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys
In this study, the effects of the combined addition of CeLa and GdY on the microstructure and mechanical properties of as-cast Al-4Cu-1Mn alloys were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and tensile testing. The results...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/23/7332 |
| _version_ | 1797399904329400320 |
|---|---|
| author | Haiyang Zhang Mingdong Wu Zeyu Li Daihong Xiao Yang Huang Lanping Huang Wensheng Liu |
| author_facet | Haiyang Zhang Mingdong Wu Zeyu Li Daihong Xiao Yang Huang Lanping Huang Wensheng Liu |
| author_sort | Haiyang Zhang |
| collection | DOAJ |
| description | In this study, the effects of the combined addition of CeLa and GdY on the microstructure and mechanical properties of as-cast Al-4Cu-1Mn alloys were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and tensile testing. The results show that the minor addition of CeLa and GdY leads to a refinement of grain size. The addition of CeLa results in the formation of supersaturated vacancies in the Al matrix, whereas the addition of GdY leads to a decrease in the precipitation temperature of the Al<sub>2</sub>Cu phase. The combined CeLa and GdY additions can significantly increase ultimate tensile strength (UTS) while losing only a small amount of elongation (EL). Compared with the unmodified alloy, the grain size and SDAS of the alloy (0.2 wt.% CeLa + 0.1 wt.% GdY) were diminished by 67.2% and 58.7%, respectively, while maximum hardness and UTS rose by 31.2% and 36.9%, respectively. |
| first_indexed | 2024-03-09T01:47:53Z |
| format | Article |
| id | doaj.art-642d881c3408448db529cda446ea4294 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T01:47:53Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-642d881c3408448db529cda446ea42942023-12-08T15:20:46ZengMDPI AGMaterials1996-19442023-11-011623733210.3390/ma16237332Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn AlloysHaiyang Zhang0Mingdong Wu1Zeyu Li2Daihong Xiao3Yang Huang4Lanping Huang5Wensheng Liu6National Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, ChinaNational Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, ChinaNational Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, ChinaNational Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, ChinaNational Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, ChinaNational Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, ChinaNational Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, ChinaIn this study, the effects of the combined addition of CeLa and GdY on the microstructure and mechanical properties of as-cast Al-4Cu-1Mn alloys were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and tensile testing. The results show that the minor addition of CeLa and GdY leads to a refinement of grain size. The addition of CeLa results in the formation of supersaturated vacancies in the Al matrix, whereas the addition of GdY leads to a decrease in the precipitation temperature of the Al<sub>2</sub>Cu phase. The combined CeLa and GdY additions can significantly increase ultimate tensile strength (UTS) while losing only a small amount of elongation (EL). Compared with the unmodified alloy, the grain size and SDAS of the alloy (0.2 wt.% CeLa + 0.1 wt.% GdY) were diminished by 67.2% and 58.7%, respectively, while maximum hardness and UTS rose by 31.2% and 36.9%, respectively.https://www.mdpi.com/1996-1944/16/23/7332Al-Cu-Mn casting alloyrare earth micro-alloyingmicrostructuremechanical properties |
| spellingShingle | Haiyang Zhang Mingdong Wu Zeyu Li Daihong Xiao Yang Huang Lanping Huang Wensheng Liu Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys Materials Al-Cu-Mn casting alloy rare earth micro-alloying microstructure mechanical properties |
| title | Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys |
| title_full | Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys |
| title_fullStr | Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys |
| title_full_unstemmed | Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys |
| title_short | Effect of Combined Addition of CeLa and GdY on Microstructure and Mechanical Properties of As-Cast Al-Cu-Mn Alloys |
| title_sort | effect of combined addition of cela and gdy on microstructure and mechanical properties of as cast al cu mn alloys |
| topic | Al-Cu-Mn casting alloy rare earth micro-alloying microstructure mechanical properties |
| url | https://www.mdpi.com/1996-1944/16/23/7332 |
| work_keys_str_mv | AT haiyangzhang effectofcombinedadditionofcelaandgdyonmicrostructureandmechanicalpropertiesofascastalcumnalloys AT mingdongwu effectofcombinedadditionofcelaandgdyonmicrostructureandmechanicalpropertiesofascastalcumnalloys AT zeyuli effectofcombinedadditionofcelaandgdyonmicrostructureandmechanicalpropertiesofascastalcumnalloys AT daihongxiao effectofcombinedadditionofcelaandgdyonmicrostructureandmechanicalpropertiesofascastalcumnalloys AT yanghuang effectofcombinedadditionofcelaandgdyonmicrostructureandmechanicalpropertiesofascastalcumnalloys AT lanpinghuang effectofcombinedadditionofcelaandgdyonmicrostructureandmechanicalpropertiesofascastalcumnalloys AT wenshengliu effectofcombinedadditionofcelaandgdyonmicrostructureandmechanicalpropertiesofascastalcumnalloys |