Czasopismo | INŻYNIERIA MATERIAŁOWA | Rocznik 2014 - zeszyt 2

Effect of rapid quenching on the copper wheel surface on the microstructure, surface development and microhardness of Fe86Zr7Nb1Cu1B5 amorphous ribbons

MARCIN NABIAŁEK

nr katalogowy: 84298

One of the tasks posed for scientific discipline, which is a materials science is the search for new materials and improvement of properties of already known ones. What, would have meant the wide understood industry, without modern materials that exhibit better and better functional parameters. The development of human civilization is possible thanks to the application, for everyday use, ever new materials, characterized by a significantly better functional properties [1]. Commonly, for the ship construction, is used carbon steel, which have a relatively high density [2]. Therefore, are sought the lighter materials, with good functional parameters, such as: excellent corrosion resistance, good durability and relatively low density of [3÷7]. Already in the seventies of the last century, were successfully introduced into shipbuilding, MgAl alloys, whose density was more than three times smaller than those of low-carbon steel [8]. Another example of materials, with unique properties are amorphous alloys [9]. They are, one of the newest groups of functional materials exhibiting a number of very interesting properties [10, 11]. Classic crystalline alloys with chemical compositions as amorphous materials exhibit significantly worse functional parameters [10, 11]. The question is, what is the reason for that? Amorphous materials have different structure than crystalline materials. So, different properties are expected, which are determined by the microstructure of the material. The arrangement of atoms in a volume of amorphous materials is chaotic, similar to liquids. In contrast, the atoms in the crystalline material, are arranged in relevant configurations, repetitive in a volume of material. In addition, the interaction between atoms of amorphous alloys, belongs to short-range type of interactions, while in the crystalline materials belong to long-range interactions. Changes in the atomic structure of metallic materials with the s[...]

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