10 November 2003 Cavitation resistance of 0H18N9T steel alloyed with various amounts of TiC or Mn by means of laser beam
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Proceedings Volume 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2003) https://doi.org/10.1117/12.515838
Event: XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2002, Wroclow, Poland
Abstract
An influence of laser beam surface alloying of 0H18N9T chromium-nickel austenitic steel with various amount of Mn or TiC powders on its performance under the cavitation erosion conditions was investigated. The samples of various contents of the additives were tested. The powders of alloying elements were melted by means of CO2 laser beam, and subsequently subjected to cavitation loading at the rotating disc facility. It was found, that presence of manganese increases capability of the substrate to work hardening and slightly contribute to an increase in its erosion resistance. It was also found, that small content of the TiC in the surface layer of the 0H18N9T steel leads to considerable increase in its hardness, unfortunately accompanied with considerable increase of the brittleness. Moreover, the quality of the melted paths produced in one step process were very poor due to appearance of the forging pores. The latter effect made the obtained coating useless for the purposes of the improving were properties of the investigated steel.
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Marek Szkodo, Boleslaw G. Giren, "Cavitation resistance of 0H18N9T steel alloyed with various amounts of TiC or Mn by means of laser beam", Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); doi: 10.1117/12.515838; https://doi.org/10.1117/12.515838
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