COMPARISON OF CORROSION PROPERTIES OF AUSTENITIC STEEL X50MnAlNiCu27-7 AFTER ROLLING AND AGING

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F16%3A86092739" target="_blank" >RIV/61989100:27360/16:86092739 - isvavai.cz</a>

Result on the web

<a href="http://konsys-t.tanger.cz/files/proceedings/17/reports/2884.pdf" target="_blank" >http://konsys-t.tanger.cz/files/proceedings/17/reports/2884.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

COMPARISON OF CORROSION PROPERTIES OF AUSTENITIC STEEL X50MnAlNiCu27-7 AFTER ROLLING AND AGING

Original language description

Austenitic steels with 20-30% Mn, and 5-10% Al have a high level of toughness and ductility in comparison to carbon steels, used for construction of vehicles. The corrosion behavior of those steels can be negatively affected by a high manganese content, which is electrochemically non-noble element and supports certain types of localized corrosion. The paper compares the corrosion properties of the two heats of high-alloy steels developed X50MnAlNiCu27-7 in conditions after hot rolling and subsequent aging at 450oC for 20 to 60 minutes. For comparative purposes, were used carbon steel C10 (11321) and related Mn-Al steels (X70MiAl28-9, X100MnAl28-12). The corrosion resistance of steels and heat treatment effects were compared and assessed on the basis of potentiodynamic polarization measurements in NaCl water solution, setting parameters of pitting and uniform corrosion, and determining the corrosion potential and polarization resistance in a dilute sulfuric acid solution. Comparative tests were also carried out in an environment of neutral salt spray and using the gravimetric method. Types of corrosion attack were assessed by microscopic observations. Small differences in chemical composition of melts, respectively modification of tested steels (in tenths of % wt.) practically did not show differences in their corrosion resistance. After aging, there was a slight decrease in corrosion mass losses compared to the state after hot rolling. In an acidic environment were measured significantly lower values of the polarization resistance of X50MnAlNiCu27-7 steel compared with carbon one and a slightly lower corrosion potential. It also was confirmed a negative effect of manganese and a positive of aluminum on changes of corrosion resistance of said steels.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JK - Corrosion and material surfaces

OECD FORD branch

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Project

<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

METAL 2014: 23rd International Conference on Metallurgy and Materials: conference proceedings : May 21st-23rd 2014, hotel Voroněž I, Brno, Czech Republic, EU

ISBN

978-80-87294-54-3

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

575-580

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

May 21, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000350641700092