Electro discharge machining (EDM) technique is widely used in the die and mold industries for its distinct advantages in machining hard metals. Nevertheless, the properties of EDM treated steel, especially its corrosion resistance, have not been well understood or clearly identified. In this paper, electrochemical corrosion behavior of EDM treated AISI H13 steel in NaOH solution was investigated, with the diamond polished being reference specimen. The corrosion resistance of the specimens was evaluated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization tests. The morphology and microstructure of the machined surface layer were also observed. Electrochemical experimental results revealed that EDM treated specimen has a weaker resistance to corrosion compared with diamond polished one. This weakening is considered to be correlated to differences in surface morphology and subsurface microstructure.
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ASME 2015 International Manufacturing Science and Engineering Conference
June 8–12, 2015
Charlotte, North Carolina, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5682-6
PROCEEDINGS PAPER
Electrochemical Corrosion Resistance of AISI H13 Steel Machined by Electro Discharge Machining
Jianfeng Li,
Jianfeng Li
Shandong University, Jinan, China
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Gaoqi Wang
Gaoqi Wang
Shandong University, Jinan, China
Search for other works by this author on:
Xufan Yan
Shandong University, Jinan, China
Song Zhang
Shandong University, Jinan, China
Jianfeng Li
Shandong University, Jinan, China
Gaoqi Wang
Shandong University, Jinan, China
Paper No:
MSEC2015-9261, V001T02A043; 7 pages
Published Online:
September 25, 2015
Citation
Yan, X, Zhang, S, Li, J, & Wang, G. "Electrochemical Corrosion Resistance of AISI H13 Steel Machined by Electro Discharge Machining." Proceedings of the ASME 2015 International Manufacturing Science and Engineering Conference. Volume 1: Processing. Charlotte, North Carolina, USA. June 8–12, 2015. V001T02A043. ASME. https://doi.org/10.1115/MSEC2015-9261
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