The influence of the arc plasma treatment on the structure and microhardness 100Cr6 bearing steel

• Autorzy: Bochnowski W.
• Języki publikacji: EN

Abstrakty

EN

The effect of arc plasma treatment on structure and microhardness of 100Cr6 steel was investigated. Four different the current intensity has been used to remelting surface of the steel. SEM and LM microscopes have been used to evaluate microstructure of remelted zone (RZ). In the remelting zone (RZ) were obtained characteristic for rapid crystallization process the dendritic cell structure. Inside the dendritic cells in dependency to current intensity of arc, the martensite or bainite and retained austenite was observed. On the boundaries of the dendritic cells as a result of segregation of C and Cr the alloyed cementite is formed. The cooling rate of the remelted zone is higher than the cooling rate obtained in the classical heat treatment. The maximum hardness 840 HV0,1 was measured in material after treatment with a smaller current intensity of arc plasma – 60A. Increases of the current intensity of arc plasma from 60 A to 110 A (for fixed speed rate of source) lead to increases the depth of the remelted zone from 1,5 to 2,3 mm.

Słowa kluczowe

EN

bearing steel; arc plasma treatment; structure; microhardness

PL

stal łożyskowa; obróbka plazmowa; mikrotwardość

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 2
• Strony: 19--22
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Bochnowski W.

• Institute of Technics, Rzeszow University, Rejtana 16 C, 35-310 Rzeszow, Poland

Bibliografia

• [1] W. Puttgen, B. Hallstedt, W. Bleck, J. F. Loffler, P. J. Uggowitzer: On the microstructure and properties of 100Cr6 steel processed in the semi-solid state, Acta Materialia, Vol. 55, Issue 19, 2007, 6553-6560.
• [2] C. Chengsong, U. Fritsching, A. Schulz, R. Tinscher, K. Bauckhage, P. Mayr: Spray forming of homogeneous 100Cr6 bearing steel billets, Journal of Materials Processing Technology, Vol. 168, Issue 3, 2005, 496-504.
• [3] J. Kusiński: Laser and their application in material enginee-ring, Akapit, Cracow, 2000 (in Polish).
• [4] D. S. Khansaa: Effect of laser surface treatment on wear resistance of 100Cr6 steel, Eng & Tech. Journal, Vol. 27, No. 6, 2009, 1151-1162.
• [5] S. Schreck, K. H. Zum Gahr: Laser assited structuring of ceramic and steel surfaces for improving tribological properties, Appllied Surface Science, Vol. 247, Issues 1-4, 2005, 616-622.
• [6] I. Yakimets, C. Richard, G. Beranger, P. Peyre: laser peening processing effect on mechanical and tribological properties of rooling steel 100Cr6, Wear, Vol. 256, Issues 3-4, 2004, 311-320.
• [7] L. M. Vilhena, M. Sedlacek, B. Podgornik, J. Vizintin, A. Babnik J. Mozina: Surface texturing by pulsed ND:YAG laser, Tribology International, Vol. 42, Issue 10, 2009, 1496-1504.
• [8] A. Barbacki, K. Dynak: Influence of laser hardening and turning on surface layer microstructure in 100Cr6 steel, Hutnik, Wiadomości Hutnicze, Vol. 71, No 7/8, 2004, 314-316 (in Polish).
• [9] W. Orłowicz, A. Trytek: Shaping of microstructure and service properties of cast iron casting by surface refinement with electric arc plasma, Archives of Foundry, Vol. 7, No 23, 2007, Polish Academy of Sciences Branch Katowice.
• [10] C.C.T. diagram of the 100Cr6 steel, IMS S.p.A. Special steels.