Control of wall thickness and surface morphology of tungsten thin wall parts by adjusting selective laser melting parameters
| Autor: | Huai-chao Yang, Chun-jiang Kuang, Lin Zhao, Yan Jun Xie, Xue-bing Wang, Wei Han |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Horizontal scan rate Morphology (linguistics) Materials science 0211 other engineering and technologies Metals and Alloys chemistry.chemical_element 02 engineering and technology Tungsten Laser 01 natural sciences law.invention chemistry Mechanics of Materials law 0103 physical sciences Materials Chemistry Surface roughness Adhesive Laser power scaling Selective laser melting Composite material 021102 mining & metallurgy |
| Zdroj: | Journal of Iron and Steel Research International. 26:182-190 |
| ISSN: | 2210-3988 1006-706X |
| DOI: | 10.1007/s42243-019-00234-w |
| Popis: | The tungsten thin wall parts which were used as high-performance collimator devices were fabricated by optimizing selective laser melting laser parameters. The effect of laser power and scan rate on wall thickness and surface morphology of tungsten thin wall parts was investigated, respectively. The results indicated that the wall thickness increased with the enhancement in laser power as a linear relationship. On the contrary, the wall thickness decayed exponentially with the acceleration in laser scan rate. Meanwhile, the wall thickness of the parts fabricated by laser double-pass melting was thinner than that fabricated by laser single-pass melting. In addition, mathematic models for selecting suitable laser power and laser scan rate to fabricate specified tungsten thin wall parts were proposed. Furthermore, the effects of laser parameters on the top surface roughness, adhesive parts and hot cracks were also discussed. |
| Databáze: | OpenAIRE |
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