The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting
The spatter produced during SLM significantly impacts the interaction between the laser and the powder bed, with linear energy density and the gas environment being key factors. Utilizing high-speed imaging technology and a novel image processing method, we developed a new spatter feature extraction...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-02-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525000140 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832595403769380864 |
|---|---|
| author | Guang Yang Qi Liu Da An Xiangming Wang Ranliang Wu Han Xie |
| author_facet | Guang Yang Qi Liu Da An Xiangming Wang Ranliang Wu Han Xie |
| author_sort | Guang Yang |
| collection | DOAJ |
| description | The spatter produced during SLM significantly impacts the interaction between the laser and the powder bed, with linear energy density and the gas environment being key factors. Utilizing high-speed imaging technology and a novel image processing method, we developed a new spatter feature extraction algorithm to analyze the number, area, angle, and speed of the spatter under different energy densities and protective gas directions. The results indicate that as the linear energy density increases from 0.15 J/mm to 0.3 J/mm, the number and intensity of the spatter initially decrease and then increase. Comparative analysis shows that droplet spatter is significantly reduced when applying protective gas opposite to the scanning direction (GD-L) compared to along the scanning direction (GD-W). This study establishes a quantitative relationship between linear energy density, gas direction, and droplet spatter behavior. The mechanism of droplet spatter is discussed and divided into three categories. Predicting the recoil pressure and horizontal distance of spatter. It provides a theoretical reference for the parameter design and control of linear energy density and gas direction in the SLM process. |
| format | Article |
| id | doaj-art-72f2283080df499f8e6e2b8bc4b3cb37 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-72f2283080df499f8e6e2b8bc4b3cb372025-01-19T06:24:07ZengElsevierMaterials & Design0264-12752025-02-01250113594The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser meltingGuang Yang0Qi Liu1Da An2Xiangming Wang3Ranliang Wu4Han Xie5Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, China 110136; Shenyang Aerospace University Shenyang, Liaoning, China 110135; Corresponding author.Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, China 110136; Shenyang Aerospace University Shenyang, Liaoning, China 110135Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, China 110136; Shenyang Aerospace University Shenyang, Liaoning, China 110135Aviation Industry Corporation of China Beijing, Beijing, China 100076Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, China 110136; Shenyang Aerospace University Shenyang, Liaoning, China 110135Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, China 110136; Shenyang Aerospace University Shenyang, Liaoning, China 110135The spatter produced during SLM significantly impacts the interaction between the laser and the powder bed, with linear energy density and the gas environment being key factors. Utilizing high-speed imaging technology and a novel image processing method, we developed a new spatter feature extraction algorithm to analyze the number, area, angle, and speed of the spatter under different energy densities and protective gas directions. The results indicate that as the linear energy density increases from 0.15 J/mm to 0.3 J/mm, the number and intensity of the spatter initially decrease and then increase. Comparative analysis shows that droplet spatter is significantly reduced when applying protective gas opposite to the scanning direction (GD-L) compared to along the scanning direction (GD-W). This study establishes a quantitative relationship between linear energy density, gas direction, and droplet spatter behavior. The mechanism of droplet spatter is discussed and divided into three categories. Predicting the recoil pressure and horizontal distance of spatter. It provides a theoretical reference for the parameter design and control of linear energy density and gas direction in the SLM process.http://www.sciencedirect.com/science/article/pii/S0264127525000140SLMSpatterMelting poolHigh-speed camera imaging |
| spellingShingle | Guang Yang Qi Liu Da An Xiangming Wang Ranliang Wu Han Xie The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting Materials & Design SLM Spatter Melting pool High-speed camera imaging |
| title | The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting |
| title_full | The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting |
| title_fullStr | The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting |
| title_full_unstemmed | The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting |
| title_short | The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting |
| title_sort | effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting |
| topic | SLM Spatter Melting pool High-speed camera imaging |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525000140 |
| work_keys_str_mv | AT guangyang theeffectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT qiliu theeffectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT daan theeffectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT xiangmingwang theeffectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT ranliangwu theeffectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT hanxie theeffectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT guangyang effectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT qiliu effectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT daan effectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT xiangmingwang effectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT ranliangwu effectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting AT hanxie effectsoflinearenergydensityandgasenvironmentondropletspattercharacteristicsanddynamicsduringselectivelasermelting |