Experimental Study of Plused arc Machining for Superalloy GH4169

DOI

10.2991/emcs-17.2017.99How to use a DOI?

Keywords

Pulsed arc machining; Nickel base superalloy; Recast layer

Abstract

Pulsed arc machining can be used to process the difficult-to-machining materials such as nickel base superalloy with high efficiency, but the surface processing quality is not unsatisfactory. To improve the processing quality, surface micro topography, recast layer were observed in the pulsed arc machining of GH4169 superalloy, surface roughness and microhardness has been tested herein. The results shows that processing parameters in duty cycle at 15~55%, pulse frequency at 400 ~ 700HZ achieved surface roughness lower than 25 m. The recast layer that generated in process result in work harden within 0~50 m from the surface. Cracks were easily formed by high frequency and duty cycle, the increased thickness of recast layer formed by low frequency. The machining quality can be improved by reasonable parameters selected.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Dongmei Zhao
AU  - Chenguang Zhu
PY  - 2017/03
DA  - 2017/03
TI  - Experimental Study of Plused arc Machining for Superalloy GH4169
BT  - Proceedings of the 2017 7th International Conference on Education, Management, Computer and Society (EMCS 2017)
PB  - Atlantis Press
SP  - 511
EP  - 516
SN  - 2352-538X
UR  - https://doi.org/10.2991/emcs-17.2017.99
DO  - 10.2991/emcs-17.2017.99
ID  - Zhao2017/03
ER  -