| Autor: |
TANG Pengjun, HE Xiaolei, YANG Bin, SHAO Cui, WANG Xingyuan, HUANG Li, LI Peiyong |
| Jazyk: |
čínština |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Journal of Aeronautical Materials, Vol 38, Iss 1, Pp 47-53 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
1005-5053 |
| DOI: |
10.11868/j.issn.1005-5053.2017.000120 |
| Popis: |
The AlSi10Mg powder was prepared by supersonic gas atomization. After classified, the powder was fabricated into block by selective laser melting (SLM). The microstructure, phase, and evolutions of powder and block were investigated by optical microscope, scanning electron microscope and X-Ray Diffraction. The tensile properties of SLM block were tested by tensile experiments at room temperature. The results show that the size distribution of AlSi10Mg powder after classified can meet the requirements of SLM technology. The powder always is spherical and spherical-like. Meanwhile, the microstructure of powders is fine and uniform, which contain α(Al) matrix and (α+Si) eutectic. In addition, the melt pool boundaries of SLM block are legible. The microstructure is also uniform and densified, the relative density approaches to 99.5%. On the other hand, only α(Al) and few Silicon phase are detected in this condition, due to the most alloying elements are dissolved in α(Al) matrix. At room temperature, the ultimate tensile strength of SLM block reaches up to 442 MPa. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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