Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusion
Continuous powder extrusion, a new powder consolidation technology, is used to process alloy powders that are difficult to form. In the paper, Al-28.5Si alloys were successfully prepared by continuous powder extrusion, and the influences of particle size on the microstructure and tensile property ha...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2021-01-01
|
| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/abe5f4 |
| _version_ | 1797746820360699904 |
|---|---|
| author | Jiancheng Yin Yanfei Li Yingshuo Niu Zitan Zhang Dan Song Yegao Chen Yingli Liu Yi Zhong |
| author_facet | Jiancheng Yin Yanfei Li Yingshuo Niu Zitan Zhang Dan Song Yegao Chen Yingli Liu Yi Zhong |
| author_sort | Jiancheng Yin |
| collection | DOAJ |
| description | Continuous powder extrusion, a new powder consolidation technology, is used to process alloy powders that are difficult to form. In the paper, Al-28.5Si alloys were successfully prepared by continuous powder extrusion, and the influences of particle size on the microstructure and tensile property have been investigated. In the as-extruded rods, the primary Si phase is dispersed in the α -Al matrix. As the powder size reduces from more than 75 μ m to less than 25 μ m, the equivalent diameter of the primary Si particles consecutively decreases, but the shape factor increases. Comparing the Si particles in the alloy rod and the powder, it is found that the eutectic Si phase disappears during continuous extrusion. Primary Si particles change from coarse and irregular to round. Specifically, the ultimate tensile strength and elongation at break of the powder-extruded alloy further increase from 211 MPa to 266 MPa and 0.99% to 2.21%. Moreover, the fracture mechanism of alloy rods is the brittle fracture. |
| first_indexed | 2024-03-12T15:42:15Z |
| format | Article |
| id | doaj.art-89c5bc8b040b429a9e5c8db57496756d |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:15Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-89c5bc8b040b429a9e5c8db57496756d2023-08-09T15:54:56ZengIOP PublishingMaterials Research Express2053-15912021-01-018202652410.1088/2053-1591/abe5f4Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusionJiancheng Yin0https://orcid.org/0000-0002-6808-1324Yanfei Li1Yingshuo Niu2Zitan Zhang3Dan Song4Yegao Chen5Yingli Liu6Yi Zhong7Faculty of Materials Science and Engineering, Kunming University of Science and Technology , Yunnan, Kunming 650093, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology , Yunnan, Kunming 650093, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology , Yunnan, Kunming 650093, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology , Yunnan, Kunming 650093, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology , Yunnan, Kunming 650093, People’s Republic of ChinaFaculty of Mechanical and Electrical Engineering, Suqian College, Jiangsu, Suqian 223800, People’s Republic of ChinaFaculty of Information Engineering and Automation, Kunming University of Science and Technology , Yunnan, Kunming 650093, People’s Republic of ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology , Yunnan, Kunming 650093, People’s Republic of ChinaContinuous powder extrusion, a new powder consolidation technology, is used to process alloy powders that are difficult to form. In the paper, Al-28.5Si alloys were successfully prepared by continuous powder extrusion, and the influences of particle size on the microstructure and tensile property have been investigated. In the as-extruded rods, the primary Si phase is dispersed in the α -Al matrix. As the powder size reduces from more than 75 μ m to less than 25 μ m, the equivalent diameter of the primary Si particles consecutively decreases, but the shape factor increases. Comparing the Si particles in the alloy rod and the powder, it is found that the eutectic Si phase disappears during continuous extrusion. Primary Si particles change from coarse and irregular to round. Specifically, the ultimate tensile strength and elongation at break of the powder-extruded alloy further increase from 211 MPa to 266 MPa and 0.99% to 2.21%. Moreover, the fracture mechanism of alloy rods is the brittle fracture.https://doi.org/10.1088/2053-1591/abe5f4continuous powder extrusionhypereutectic Al-Si alloymicrostructurestrengthfracture |
| spellingShingle | Jiancheng Yin Yanfei Li Yingshuo Niu Zitan Zhang Dan Song Yegao Chen Yingli Liu Yi Zhong Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusion Materials Research Express continuous powder extrusion hypereutectic Al-Si alloy microstructure strength fracture |
| title | Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusion |
| title_full | Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusion |
| title_fullStr | Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusion |
| title_full_unstemmed | Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusion |
| title_short | Effect of particle size on the microstructure and tensile property of the Al-28.5Si alloy prepared by continuous powder extrusion |
| title_sort | effect of particle size on the microstructure and tensile property of the al 28 5si alloy prepared by continuous powder extrusion |
| topic | continuous powder extrusion hypereutectic Al-Si alloy microstructure strength fracture |
| url | https://doi.org/10.1088/2053-1591/abe5f4 |
| work_keys_str_mv | AT jianchengyin effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion AT yanfeili effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion AT yingshuoniu effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion AT zitanzhang effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion AT dansong effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion AT yegaochen effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion AT yingliliu effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion AT yizhong effectofparticlesizeonthemicrostructureandtensilepropertyoftheal285sialloypreparedbycontinuouspowderextrusion |