TY - JOUR
T1 - Fatigue response of Udimet 720 following minimum damage wire electrical discharge machining
AU - Antar, M.T.
AU - Soo, S.L.
AU - Aspinwall, D.K.
AU - Sage, C.
AU - Cuttell, M.
AU - Perez, R.
AU - Winn, A.J.
PY - 2012/12/1
Y1 - 2012/12/1
N2 - The paper presents experimental data for the fatigue behaviour of Udimet 720 nickel based superalloy following wire electrical discharge machining using minimum damage generator technology. Comparative data for flank milled samples are also given together with associated micrographs detailing workpiece crack initiation and subsurface integrity. Despite a marginally higher S-N response for the milled specimens compared to the wire machined samples subject to a finishing regime, statistical analysis suggested no significant difference in performance at the 5% level. In contrast, wire cut samples fatigue tested after only roughing, showed a markedly lower response commensurate with the greater surface roughness, the presence of surface microcracks and tensile residual stresses approaching 600. MPa.
AB - The paper presents experimental data for the fatigue behaviour of Udimet 720 nickel based superalloy following wire electrical discharge machining using minimum damage generator technology. Comparative data for flank milled samples are also given together with associated micrographs detailing workpiece crack initiation and subsurface integrity. Despite a marginally higher S-N response for the milled specimens compared to the wire machined samples subject to a finishing regime, statistical analysis suggested no significant difference in performance at the 5% level. In contrast, wire cut samples fatigue tested after only roughing, showed a markedly lower response commensurate with the greater surface roughness, the presence of surface microcracks and tensile residual stresses approaching 600. MPa.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84863003214&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2012.06.003
DO - 10.1016/j.matdes.2012.06.003
M3 - Article
AN - SCOPUS:84863003214
SN - 0261-3069
VL - 42
SP - 295
EP - 300
JO - Materials & Design
JF - Materials & Design
ER -