Fatigue Properties of Nodular Cast Iron at Low Frequency Cyclic Loading

Archives of Metallurgy and Materials

Vaško A.¹ 

[1] University of Žilina, Faculty of Mechanical Engineering, Department of Material Engineering, Univerzitná 8215/1, 010 26 Žilina, Slovakia;

关键词: fatigue test;    low frequency cyclic loading;    nodular cast iron;    steel scrap;    silicon carbide;   

DOI  :  10.1515/amm-2017-0325

来源: DOAJ

【 摘 要 】

Three melts of ferrite-pearlitic nodular cast iron with different charge composition were used for fatigue tests. Wöhler fatigue curves and fatigue strength were obtained, and microstructure and fracture surfaces were investigated. The aim of the paper is to determine the influence of charge composition on microstructure, mechanical and fatigue properties of synthetic nodular cast irons and their micromechanisms of failure. Fatigue tests were realised at low frequency sinusoidal cyclic push-pull loading (stress ratio R = −1) at ambient temperature (T = 20 ±5°C). They were carried out with using the fatigue experimental machine Zwick/Roell Amsler 150HFP 5100 at frequency f ≈ 120 Hz. The results of fatigue tests at low frequency cyclic loading are compared with fatigue properties at high frequency cyclic loading.

【 授权许可】

Unknown