Effect of abrasive flow machining (AFM) finish of selective laser melting (SLM) internal channels on fatigue performance
| Autor: | Julien Bajolet, Sangil Han, Joël Rech, Ferdinando Salvatore, Joel Courbon |
|---|---|
| Přispěvatelé: | Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne-Centre National de la Recherche Scientifique (CNRS), Laboratoire de mécanique Biomécanique Polymère Structures (LaBPS), Université de Lorraine (UL), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS]Physics [physics]
0209 industrial biotechnology Materials science Abrasive flow machining Strategy and Management 02 engineering and technology Surface finish Management Science and Operations Research Superfinishing 021001 nanoscience & nanotechnology Fatigue limit Industrial and Manufacturing Engineering 020901 industrial engineering & automation Electrical discharge machining Residual stress Surface roughness Composite material 0210 nano-technology Stress concentration |
| Zdroj: | Journal of Manufacturing Processes Journal of Manufacturing Processes, 2020, 59, pp.248-257. ⟨10.1016/j.jmapro.2020.09.065⟩ |
| ISSN: | 1526-6125 |
| DOI: | 10.1016/j.jmapro.2020.09.065 |
| Popis: | Conformal cooling channel technology is becoming a common practice in the design of injection moulds made of maraging steel thanks to additive processes such as selective laser melting (SLM). However, the rough surface created by SLM can have an adverse effect on the fatigue life of the mould because of the rough channel surfaces that induce stress concentrations in the valleys of the roughness. So as to overcome this problem, abrasive flow machining (AFM) has been applied on SLM produced channels. This paper investigates the influence of this superfinishing technique on the surface roughness and on the residual stress state of channels. It is shown that AFM is capable of improving the surface roughness and inducing compressive residual stresses. Then, this work proposes an original testing method to characterise the fatigue resistance of internal channels, that reveal that AFM is able to improve significantly the fatigue strength of channels and to recover the fatigue strength commonly obtained with electrical discharge machining (EDM). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect