• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
  • Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Influences of up-milling and down-milling on surface integrity and fatigue strength of X160CrMoV12 steel

Article dans une revue avec comité de lecture
Author
LAAMOURI, Adnen
303396 Université de Sfax - University of Sfax
GHANEM, Farhat
481666 Ecole Nationale Supérieure d'ingénieurs de Tunis [ENSIT]
SIDHOM, Habib
481666 Ecole Nationale Supérieure d'ingénieurs de Tunis [ENSIT]
ccBRAHAM, Chedly
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/18458
DOI
10.1007/s00170-019-04280-2
Date
2019
Journal
International Journal of Advanced Manufacturing Technology

Abstract

This paper aims to compare the influences of the two peripheral milling modes, up-milling and down-milling, on surface integrity and fatigue strength of X160CrMoV12 high-alloy steel. The experimental investigations showed an important difference between integrity of both milled surfaces. The down-milled surface is lowly work-hardened and well finished (lower roughness), but subjected to tensile residual stresses and severely damaged by folds of metal and short micro-cracks. The up-milled surface is highly work-hardened and subjected to compressive residual stresses, but poorly finished (higher roughness) and damaged by a density of micro-cavities due to carbide extraction. The results of 3-point bending fatigue tests revealed that the fatigue limit at 2 × 106 cycles of the up-milled state is largely higher of about 26% in comparison with the down-milled state. The effects of surface integrity induced by each milling mode on fatigue strength were evaluated using a HCF behaviour predictive approach based on Dang Van’s multiaxial criterion. The predictive results estimated that the pre-existing micro-cracks play a dominant role in the fatigue strength degradation of the down-milled surface while the other surface effects seem to be lower. On the contrary, the fatigue strength of the up-milled surface is less affected by the pre-existing micro-cavities. The detrimental roughness effect (stress concentration effect) is significantly reduced by the beneficial effects of superficial hardening and compressive residual stresses. So, this study revealed that up-milling is the more appropriate mode for a better surface integrity towards fatigue strength of X160CrMoV12 steel than the down-milling mode.

Files in this item

Name:
PIMM_IJAMT_2019_BRAHAM.pdf
Size:
5.939Mb
Format:
PDF
Description:
Article
View/Open

Collections

  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

Related items

Showing items related by title, author, creator and subject.

  • Effect of electro discharge machining (EDM) on the AISI316L SS white layer microstructure and corrosion resistance 
    Article dans une revue avec comité de lecture
    SIDHOM, Habib; GHANEM, Farhat; AMADOU, Tidiane; GONZALEZ, Gonzalo; ccBRAHAM, Chedly (Springer Verlag, 2013)
    The localised corrosion resistance of austenitic stainless steels is strongly influenced by the quality of finished surface. EDM machining induces substantial changes by the high thermal gradients generated by electric ...
  • Effects of finishing processes on the fatigue life improvements of electro-machined surfaces of tool steel 
    Article dans une revue avec comité de lecture
    GHANEM, Farhat; FREDJ, Nabil Ben; SIDHOM, Habib; ccBRAHAM, Chedly (Springer Verlag, 2011)
    Machining the EN X160CrMoV12 tool steel by electro-discharge machining (EDM) process generates significant modifications of microgeometrical, microstructural and mechanical properties of the upper layers of the machined ...
  • Potential fatigue strength improvement of AA 5083-H111 notched parts by wire brush hammering: Experimental analysis and numerical simulation 
    Article dans une revue avec comité de lecture
    SIDHOM, Naziha; BEN MOUSSA, Naoufel; JANEB, Sameh; SIDHOM, Habib; ccBRAHAM, Chedly (Elsevier, 2014)
    The effects of milling as machining process and a post-machining treatment by wire-brush hammering, on the near surface layer characteristics of AA 5083-H111 were investigated. Surface texture, work-hardening and residual ...
  • Effect of machining processes on the residual stress distribution heterogeneities and their consequences on the stress corrosion cracking resistance of AISI 316L SS in chloride medium 
    Article dans une revue avec comité de lecture
    RHOUMA, Amir Ben; SIDHOM, Naziha; MAKHLOUF, Kamel; SIDHOM, Habib; GONZÁLEZ, Gonzalo; ccBRAHAM, Chedly (Springer Verlag, 2019)
    The effects of machining such as grinding and turning on the microstructural and mechanical changes of the machined surfaces of AISI 316L stainless steel (SS) have been studied. Surface aspects and surface defects have ...
  • Assessment of low cycle fatigue improvement of machined AISI 316 stainless steel by brush hammering 
    Article dans une revue avec comité de lecture
    SIDHOM, Naziha; MAKHLOUF, Kamel; KHLIFI, Ammar; SIDHOM, Habib; ccBRAHAM, Chedly (Wiley-Blackwell, 2014)
    The effects of wire brush hammering on low cycle fatigue behaviour of AISI 316 austenitic stainless steel has been investigated on turned samples through an experimental study combining strain controlled fatigue tests, ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales