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- Surface Integrity Analysis when Milling Ultrafine-grained Steels
- Universidade de São Paulo (USP)
- Universidade Federal de São Carlos (UFSCar)
- Universidade Estadual Paulista (UNESP)
- Paulista Univ UNIP
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- This paper quantifies the effects of milling conditions on surface integrity of ultrafine-grained steels. Cutting speed, feed rate and depth of cut were related to microhardness and microstructure of the workpiece beneath machined surface. Low-carbon alloyed steel with 10.8 mu m (as-received) and 1.7 mu m (ultrafine) grain sizes were end milled using the down-milling and dry condition in a CNC machining center. The results show ultrafine-grained workpiece preserves its surface integrity against cutting parameters more than the as-received material. Cutting speed increases the microhardness while depth of cut deepens the hardened layer of the as-received material. Also, deformations of microstructure following feed rate direction were observed in workpiece subsurface.
- Materials Research-ibero-american Journal of Materials. São Carlos: Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, v. 15, n. 1, p. 125-130, 2012.
- Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials
- surface integrity
- ultrafine-grained steel
- Acesso aberto
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