RT Journal Article
T1 Surface integrity and fatigue of non-conventional machined Alloy 718
A1 Suárez, A.
A1 Veiga, F.
A1 Polvorosa, R.
A1 Artaza, T.
A1 Holmberg, J.
A1 de Lacalle, L. N.López
A1 Wretland, A.
AB Alloy 718 is a high-strength, corrosion-resistant nickel chromium-based superalloy frequently used for applications, such as aerospace, marine, nuclear reactor and chemical industries, due to its outstanding inherent properties such as high strength and corrosion resistance at high temperatures together with good creep behaviour. Although, the use of conventional manufacturing processes is prevalent for their use on Alloy 718, alternative manufacturing technologies are gaining importance. This work compares the effects of alternative manufacturing processes, such as Abrasive water jet (AWJ), Wire Electrical Discharge Machining (WEDM) and ultrasound vibration assisted milling (UVAM) with conventional milling during the manufacture of Alloy 718 parts. Surface integrity, hardness, residual stress and fatigue strength obtained from these machining processes have been examined for cutting alloy 718. Results show that both residual stresses and surface roughness are correlated with fatigue strength. UVAM results shown an improvement on the surface integrity of the final workpiece. AWJ and WEDM show poorer results, further work on post-process technologies or process condition selection must be carry out to establish them as an alternative in Alloy 718 cutting operations.
SN 1526-6125
YR 2019
FD 2019-12
LK https://hdl.handle.net/11556/4305
UL https://hdl.handle.net/11556/4305
LA eng
NO Suárez , A , Veiga , F , Polvorosa , R , Artaza , T , Holmberg , J , de Lacalle , L N L & Wretland , A 2019 , ' Surface integrity and fatigue of non-conventional machined Alloy 718 ' , Journal of Manufacturing Processes , vol. 48 , pp. 44-50 . https://doi.org/10.1016/j.jmapro.2019.09.041
NO Publisher Copyright: © 2019 The Society of Manufacturing Engineers
DS TECNALIA Publications
RD 1 ago 2024