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Publikacje Pracowników Politechniki Lubelskiej
Status:
Autorzy: Pałka Krzysztof, Weroński Andrzej, Zaleski Kazimierz
Rok wydania: 2006
Wersja dokumentu: Drukowana | Elektroniczna
Język: angielski
Numer czasopisma: 1-2
Wolumen/Tom: 16
Strony: 57 - 62
Efekt badań statutowych NIE
Materiał konferencyjny: NIE
Publikacja OA: NIE
Abstrakty: angielski
Purpose: In this paper there were presented the burnishing process and obtained mechanical properties and the structure of burnished stainless steel and its corrosion resistance. Design/methodology/approach: Burnishing was conducted in standard milling machine equipped with the 2-ball rotation head. The structural and mechanical researches were carried out by optical microscopy and the X-ray diffraction patterns. The corrosion research was performed using the potentiodynamic anodic polarization. The scope of this study was to achieve the correlations between mechanical and structural properties and corrosion resistance of burnished stainless steel. Findings: Results shown increasing of the open circuit potential (EOCP) and decreasing of breakdown (Eb) and repassivation potentials (Erp) with increasing of burnishing load. The breakdown potential and the repassivation potential changes were influenced by structural changes in surface layer and it indicated of slightly decreasing of corrosion resistance. It might be caused by martensitic transformation induced by the plastic deformation. The X-ray diffraction analysis showed increasing of Fe-α contain with the burnishing load. Research limitations/implications: There’s need to conduct future research on susceptibility to stress corrosion cracking and fatigue corrosion. The main difference between presented research and the future is necessity of double-sided burnishing of specimens. Practical implications: Burnishing increases the strength and the rigidity of elements, especially stream plates of heat exchangers which may have lower thickness to improve the heat transfer. Some of elements, such as homogenized valves achieving better erosion and wear resistance by higher surface hardness. Originality/value: Presented researches contain a lot of quantitative results which may be useful for design engineers in wide space of application.