Effect of Annealing on Nature of Corrosion Damages of Medium-nickel Austenitic Cast Iron

• Autorzy: Medyński D. , Janus A. , Chęcmanowski J.

Identyfikatory

DOI

10.1515/afe-2017-0096

• Języki publikacji: EN

Abstrakty

EN

Within the presented research, effect of annealing on nature of corrosion damages of medium-nickel austenitic nodular cast iron castings, containing 5.5% to 10.3% Ni, was determined. Concentration of nickel, lower than in the Ni-Resist cast iron, was compensated with additions of other austenite-stabilising elements (manganese and copper). In consequence, raw castings with austenitic matrix structure and gravimetrically measured corrosion resistance increasing along with nickel equivalent value EquNi were obtained. Annealing of raw castings, aimed at obtaining nearly equilibrium structures, led to partial austenite-to-martensite transformation in the alloys with EquNi value of ca. 16%. However, corrosion resistance of the annealed alloys did not decrease in comparison to raw castings. Annealing of castings with EquNi value above 18% did not cause any structural changes, but resulted in higher corrosion resistance demonstrated by smaller depth of corrosion pits.

Słowa kluczowe

EN

heat treatment; austenitic cast iron; corrosion resistance; stability of austenite

PL

obróbka cieplna; żeliwo austenityczne; odporność na korozję

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 3
• Strony: 85--90
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Medyński D.

• Faculty of Technical and Economic Sciences, Witelon State University of Applied Science in Legnica, Sejmowa 5A, 59-220 Legnica, Poland

autor

Janus A.

• Department of Foundry Engineering, Plastics and Automation, Wroclaw University of Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland

autor

Chęcmanowski J.

• Department of Advanced Materials Technologies, Wroclaw University of Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)