Abstract
The paper contains results of an experimental evaluation of fatigue properties of two steel types used for shaft manufacture, namely rather conventional, medium carbon high quality C45+C steel and quite modern low alloy ETG®88 steel, recently developed with the aim to reduce overall manufacture cycle costs together with maintenance of high mechanical and fatigue properties. Actual critical fatigue damage modes of shafts, namely at stress concentrators of shaft shoulders, was experimentally modeled by small and quite large notched specimens loaded by rotating bending. ETG®88 steel was characteristic by somewhat higher fatigue resistance, but higher scatter of results. Differences are discussed considering chemical composition, microstructure and results of simple analyses of fatigue fracture surfaces.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference10 articles.
1. Information on http: /www. steeltec. ch/en/products/product-overview/etgr88100.
2. R. Zehnder and A. Reyes: Energ. Fluide Vol. 25, No. 2 (1986), p.39.
3. J. Huppi and M.J. Thompson: Hydraulic Pneum. Mech. Power Vol. 31, No. 363 (1985), p.68.
4. E. Marcisz, Z. Marciniak, D. Rozumek and E. Macha: Key Eng. Mat. Vol. 598 (2014) p.147.
5. G. Szala and B. Ligaj: Key Eng. Mat. Vol. 598 (2014) p.231.