TY - JOUR
T1 - Surface integrity of nickel-based alloys subjected to severe plastic deformation by abusive drilling
AU - M'Saoubi, Rachid
AU - Axinte, Dragos
AU - Herbert, Christopher
AU - Hardy, Mark
AU - Salmon, Paul
N1 - Funding Information:
This work was partially carried out under the sponsorship of PhD CASE award (University of Nottingham and Rolls-Royce) EPSRC–UK ( EP/H501460/1 ). The authors would like to thank M. Schwind and M. Fallqvist at Seco Tools AB for helping with acquiring the EBSD and nanohardness data, respectively. M. Abouridouane (RWTH-WZL Aachen) is also greatly acknowledged for performing the preliminary 3D FEM simulations.
PY - 2014
Y1 - 2014
N2 - Surface integrity of nickel-based superalloys after machining operations has become a topic of major interest in the aerospace sector. In the present work, the characteristics of nickel-based alloys (Alloy 718, Waspaloy, Alloy 720Li, and RR1000) subjected to abusive drilling conditions have been investigated using experimental methods such as FEG-SEM, EBSD, XRD, TEM and nano-indentation. The results indicated the presence of nano-sized grains typical of severe plastic deformation in the machined surface while the presence of plastic slip bands was observed in the sub-surface layers. Correlations between the thermo-mechanical properties of the nickel-based alloys and the severe plastic deformation features of the machined surfaces are presented.
AB - Surface integrity of nickel-based superalloys after machining operations has become a topic of major interest in the aerospace sector. In the present work, the characteristics of nickel-based alloys (Alloy 718, Waspaloy, Alloy 720Li, and RR1000) subjected to abusive drilling conditions have been investigated using experimental methods such as FEG-SEM, EBSD, XRD, TEM and nano-indentation. The results indicated the presence of nano-sized grains typical of severe plastic deformation in the machined surface while the presence of plastic slip bands was observed in the sub-surface layers. Correlations between the thermo-mechanical properties of the nickel-based alloys and the severe plastic deformation features of the machined surfaces are presented.
KW - Drilling
KW - Ni alloy
KW - Surface integrity
UR - http://www.scopus.com/inward/record.url?scp=84902543830&partnerID=8YFLogxK
U2 - 10.1016/j.cirp.2014.03.067
DO - 10.1016/j.cirp.2014.03.067
M3 - Article
AN - SCOPUS:84902543830
SN - 0007-8506
VL - 63
SP - 61
EP - 64
JO - CIRP Annals - Manufacturing Technology
JF - CIRP Annals - Manufacturing Technology
IS - 1
ER -