Evolution of sulphides in Cu - Bearing GOES during industrial production process

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F16%3A86099847" target="_blank" >RIV/61989100:27360/16:86099847 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Evolution of sulphides in Cu - Bearing GOES during industrial production process

Original language description

Grain oriented electrical steels (GOES) produced by the AlN + Cu technology usually contain ca 0.5 wt. % of Cu. Evolution of microstructure during the final high temperature annealing of GOES is strongly affected by microstructural changes during the individual steps of industrial production process. Inhibition phases, AlN and sulphides, are expected to play an important role in the formation of the final Goss texture. This paper deals with TEM characterization of sulphides in Cu - bearing GOES after basic steps of industrial production process: hot rolling, decarburization annealing (DCA) and high temperature annealing (HTA). In specimens after hot rolling only sulphides of manganese and complex sulphides of manganese containing, a small fraction of copper were identified. Typical size of these sulphides reached several hundreds of nanometres. These results prove a low solvus temperature of Cu rich sulphides in GOES. Re-precipitation of copper-rich sulphides was observed after decarburization annealing. Due to low temperature of precipitation, typical size of these sulphides reached only several tens of nanometres. Apart from complex sulphides of copper and manganese, fine Cu2S particles were detected. In the paper the effect of Cu - bearing sulphides precipitation on the formation of other minor phases is discussed. Heterogeneous nucleation of AlN particles on fine sulphides was often observed. During high temperature annealing all sulphides gradually dissolved.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

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

Article name in the collection

METAL 2016: conference proceedings : (reviewed version) : 25th Anniversary International Conference on Metallurgy and Materials : May 25th-27th 2016, Hotel Voronez I, Brno, Czech Republic, EU

ISBN

978-80-87294-67-3

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

586-591

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

May 25, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000391251200093