Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS
Fatigue tests were performed on sand-blasted AlSi10Mg samples produced by Direct Metal Laser Sintering (DMLS) of powders. The effect of sand-blasting on surface properties was evaluated by roughness and residual stresses measurements, together with morphological analysis, in comparison with as-fabri...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2523/2601 |
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| author | Annalisa Pola Davide Battini Marialaura Tocci Andrea Avanzini Luca Girelli Candida Petrogalli Marcello Gelfi |
| author_facet | Annalisa Pola Davide Battini Marialaura Tocci Andrea Avanzini Luca Girelli Candida Petrogalli Marcello Gelfi |
| author_sort | Annalisa Pola |
| collection | DOAJ |
| description | Fatigue tests were performed on sand-blasted AlSi10Mg samples produced by Direct Metal Laser Sintering (DMLS) of powders. The effect of sand-blasting on surface properties was evaluated by roughness and residual stresses measurements, together with morphological analysis, in comparison with as-fabricated condition. An evident improvement of surface finishing was observed after sand-blasting, which also lead to the presence of compressive residual stress on the external surface of samples, as revealed by XRD measurements. Furthermore, defects analysis allowed the identification of a uniform distribution of porosities in the cross section whereas larger porosities seem more abundant close to the surface. It was found that the tested material exhibits good fatigue resistance, supporting the positive role of sand-blasting as a simple post-processing treatment. Superficial defects are the preferential crack initiation sites, as demonstrated by SEM analysis of fracture surfaces. |
| format | Article |
| id | doaj-art-7c214bd94c304c23970e6d73967fea81 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-7c214bd94c304c23970e6d73967fea812025-01-02T22:46:22ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-07-01134977579010.3221/IGF-ESIS.49.6910.3221/IGF-ESIS.49.69Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLSAnnalisa PolaDavide BattiniMarialaura TocciAndrea AvanziniLuca GirelliCandida PetrogalliMarcello GelfiFatigue tests were performed on sand-blasted AlSi10Mg samples produced by Direct Metal Laser Sintering (DMLS) of powders. The effect of sand-blasting on surface properties was evaluated by roughness and residual stresses measurements, together with morphological analysis, in comparison with as-fabricated condition. An evident improvement of surface finishing was observed after sand-blasting, which also lead to the presence of compressive residual stress on the external surface of samples, as revealed by XRD measurements. Furthermore, defects analysis allowed the identification of a uniform distribution of porosities in the cross section whereas larger porosities seem more abundant close to the surface. It was found that the tested material exhibits good fatigue resistance, supporting the positive role of sand-blasting as a simple post-processing treatment. Superficial defects are the preferential crack initiation sites, as demonstrated by SEM analysis of fracture surfaces.https://www.fracturae.com/index.php/fis/article/view/2523/2601AlSi10MgDMLSFatiguePorositySand-blastingScanning Electron Microscopy |
| spellingShingle | Annalisa Pola Davide Battini Marialaura Tocci Andrea Avanzini Luca Girelli Candida Petrogalli Marcello Gelfi Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS Fracture and Structural Integrity AlSi10Mg DMLS Fatigue Porosity Sand-blasting Scanning Electron Microscopy |
| title | Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS |
| title_full | Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS |
| title_fullStr | Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS |
| title_full_unstemmed | Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS |
| title_short | Evaluation on the fatigue behavior of sand-blasted AlSi10Mg obtained by DMLS |
| title_sort | evaluation on the fatigue behavior of sand blasted alsi10mg obtained by dmls |
| topic | AlSi10Mg DMLS Fatigue Porosity Sand-blasting Scanning Electron Microscopy |
| url | https://www.fracturae.com/index.php/fis/article/view/2523/2601 |
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