Improvement of the Surface Layer Properties of 316L Stainless Steel Produced by DMLS Through the Use of a Shot Peening Process.
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| Title: | Improvement of the Surface Layer Properties of 316L Stainless Steel Produced by DMLS Through the Use of a Shot Peening Process. |
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| Authors: | Dudek, Kazimiera1 (AUTHOR), Grygier, Dominika2 (AUTHOR), Gałda, Lidia3 (AUTHOR) lgktmiop@prz.edu.pl |
| Source: | Materials (1996-1944). Apr2026, Vol. 19 Issue 7, p1293. 26p. |
| Subjects: | Direct metal laser sintering, Shot peening, Milling machinery, Residual stresses, Laser sintering, Austenitic stainless steel, Surface topography |
| Abstract: | Additive-manufactured (AM) 316L stainless steel, produced via direct metal laser sintering (DMLS) and characterised by a surface topography of high irregularities and tensile residual stresses with specific anisotropy, was subjected to milling and shot peening. The milling process caused a reduction in surface topography parameters, but tensile residual stresses increased significantly. The shot peening process was carried out according to the full factorial design 32 and technological parameters such as a shot diameter in the range of 1-3 mm and an air supply pressure between 0.2 and 0.6 MPa. As a result of the experiments and the analysis, reduced surface topography was achieved, and a favourable residual stress state was formed with compressive stresses. The mechanism of the changes was demonstrated via microstructure observation and statistical models obtained by mathematical analysis. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Additive-manufactured (AM) 316L stainless steel, produced via direct metal laser sintering (DMLS) and characterised by a surface topography of high irregularities and tensile residual stresses with specific anisotropy, was subjected to milling and shot peening. The milling process caused a reduction in surface topography parameters, but tensile residual stresses increased significantly. The shot peening process was carried out according to the full factorial design 32 and technological parameters such as a shot diameter in the range of 1-3 mm and an air supply pressure between 0.2 and 0.6 MPa. As a result of the experiments and the analysis, reduced surface topography was achieved, and a favourable residual stress state was formed with compressive stresses. The mechanism of the changes was demonstrated via microstructure observation and statistical models obtained by mathematical analysis. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961944 |
| DOI: | 10.3390/ma19071293 |
