Hydro-abrasive erosion resistance of C45 steel in different heat-treated states on a designed wear test apparatus

Date

2010

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Walter De Gruyter GMBH

Abstract

In this study, the hydro-abrasive erosion behaviour of a C 45 steel in different heat-treated states, which are normalizing, oil-quenching, tempering after oil-quenching and boronizing thermochemical surface treatment, was investigated on a designed and manufactured hydro-abrasive wear test apparatus. Boronizing was performed in a solid medium consisting of B4C, SiC, and KBF4 at a temperature of 900 degrees C for two hours. The microstructure and the wear regions of the specimens were characterized using an optical and a scanning electron microscope. In the tribogical system, the specimens were rotated in a system instead subjecting them to a fluid and moving abrasive particles. The wear tests were performed under a fixed rotational speed of 53 rpm for each specimen in the respective heat-treated state. The weight loss at the end of each wear period of 10 hours was measured using a precision electronic balance with an accuracy of 1 mg. It was concluded from the investigation that oil-quenching and tempering treatments led to significant improvement of the hydro-abrasive erosion resistance, while as-boronized and as-normalized specimens exhibited the lowest erosion resistance. In spite of its high surface hardness in the boronized state, the C 45 steel did not affect positively its hydro-abrasive erosion resistance. In the as-normalized specimen, the low hydro-abrasive erosion resistance corresponded with a decrease of hardness. An increasing amount of ferrite and pearlite in the C 45 steel led to the reduction of the hydro-abrasive erosion resistance.

Description

Keywords

Behavior, Carbon, Prediction, Materials science, Abrasives, Electronic scales, Erosion, Hardness, Quenching, Scanning electron microscopy, Silicon carbide, Surface treatment, Tempering, Abrasive erosion, Abrasive particles, Electronic balances, Erosion resistance, Oil quenching, Rotational speed, Surface hardness, Thermochemical surface treatment, Heat resistance

Citation

Yiğit, K. ve Aydın, H. (2010). "Hydro-abrasive erosion resistance of C45 steel in different heat-treated states on a designed wear test apparatus". Materials Testing, 52(5), 323-331.