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M. Roy, A. Pauschitz, F. Franek:
"Elevated Temperature Wear of 253 MA Alloy";
Vortrag: 3rd Aimeta International Tribology Conference, Salerno, Italy; 18.09.2002 - 20.09.2002; in: "Abstracts of Papers from 3rd Aimeta International Tribology Conference", V. d´ Agostino, S. Della Valle (Hrg.); (2002), S. 5.

The adhesion of the oxide scale with the substrate material can be improved by micro alloying with rare earth elements such as Ce, Y etc., ensuring uniform distribution of fine dispersoids near the surface either by internal oxidation or by mechanical alloying and aluminising by noble alloying elements like Pt, Rd etc. As the elevated temperature wear of metallic material is always accompanied by oxidation, any improvement of oxide adhesion characteristics is expected to improve the wear characteristics. The alloy 253 MA is micro-alloyed with rare earth elements. Such alloying improves oxidation behaviour of the material and in turn may enhance the wear performances of the 253 MA alloy. In view of this, the present investigation has been undertaken to understand the influence of micro alloying on the elevated temperature wear characteristics of MA 253 alloy. In order to achieve the above mentioned objective, the wear behaviour of MA 253 alloy was studied for a range of test conditions. The worn surfaces and the area beneath the worn surfaces are examined with SEM to identify the mechanisms of material loss. The wear rate is also correlated with the mechanical properties of the materials. The results of this investigation will be presented at length.