The Effect of Addition of Titanium on The Structure and Properties of High Chromium Cast Iron

Abstract

The paper presents results of Ti-addition to High Chromium Cast Iron (HCCI) on the structure and selected mechanical properties. For this study casted two sets of cylinders with dimensions ø20 mm, ø15 mm × 250 mm, for the High Chromium Cast Iron (HCCI) and with the 4% by mass Ti-addition. Melts were performed in the induction furnace crucible capacity of 15 kg. During the heats the cup with installed S type thermocouple was poured to record the cooling curves. The cylinders were subjected to the static bending strength test. Samples for the test microstructure and Rockwell hardness were cut from the cylinders. The study shows that the addition of titanium had an impact on the structure and thus the properties of High Chromium Cast Iron (HCCI). In subsequent studies, through an appropriate choice of chemical composition and proper process control, it is planned to obtain in the structure the titanium carbides TiC and chromium carbides with type (Cr, Fe)7C3.

Influence of Titanium on Crystallization and Wear Resistance of High Chromium Cast Iron

“…Inoculation allows to manipulate the crystallization process, it has heavy impact on the castings structure and properties without the necessity to change its chemical composition [2,[8][9][10]. From the economical point of view it allows to keep a decent ratio of greatly increased mechanical properties to the production cost.…”

Shaping optimal zinc coating on the surface of high-quality ductile iron casting. Part II – Technological formula and value of diffusion coefficient

“…Additionally, because of the high value of the undercooling ΔT, it has been assumed that the isothermal crystallization of individual intermetallic phases is proceeding in a dynamic mode [1][2][3][4][5][6][7][8][9][10][11][12]. An important factor that affects the growth of the protective layer is flux [4].…”

The Effect of Fe-Ti Inoculation on Solidification, Structure and Mechanical Properties of High Chromium Cast Iron

“…High chromium cast iron (HCCI) is commonly used in various branches of the industry, and this is mainly due to its resistance to both the abrasive wear and the effect of aggressive environments, including mineral processing, cement production, and pulp and paper industry [5]. High chromium cast iron is divided into hypoeutectic, eutectic and hypereutectic grades.…”

“…Occasionally, however, following the example of eutectic carbides, they tend to form a continuous network in the interdendritic spaces. Carbides of the M 3 C and M 23 C 6 type occur as interconnected fibres or plates [5][6][7][8][9][10][11][12][13][14]. Isolated carbides are more effective in suppressing cracks in a ferritic matrix where they are easily embedded.…”