ANALYSIS OF ACICULAR FERRITE FORMATION IN HAZ OF PIPE-LINES STEEL AFTER HIGH HEAT INPUT WELDING
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F04%3A00010179" target="_blank" >RIV/61989100:27360/04:00010179 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
ANALYSIS OF ACICULAR FERRITE FORMATION IN HAZ OF PIPE-LINES STEEL AFTER HIGH HEAT INPUT WELDING
Original language description
The Ti adding to low-carbon steel leads to the microstructure modification from side plate ferrite (Widmanstätten ferrite, upper bainite) to acicular ferrite. The study has been carried out to classify the effect of acicular ferrite formation on toughness improvement of heat affected zone in large heat input welding (simulation process). The formation of intragranularly nucleated ferrite in heat effected zone results in improvement in material response. The steel after Ti-adding contains non-metallic inclusions of Ti2O3-type. These inclusions have dense cation vacancies what contributes greatly to preferential nucleation of various faces adhered with Ti2O3 (increase of Ti2O3 nucleation potency). This inclusion acts as preferential nucleation site of MnS and TiN. Precipitation of MnS results in a formation of Mn-depleted zone at Ti2O3/ferrite interface. This zone has higher chemical free enthalpy change for ferrite nucleation. TiN decreases interfacial energy for ferrite nucleation. The
Czech name
Analýza vzniku acikulárního feritu v TOZ trubek po vysokoteplotním svařovacím příkonu
Czech description
Analýza vzniku acikulárního feritu v TOZ trubek po vysokoteplotním svařovacím příkonu
Classification
Type
D - Article in proceedings
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA106%2F03%2F0264" target="_blank" >GA106/03/0264: Transport phenomena in course of solidification process and their effect on the useful material properties</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
"Advanced metallic materials and their joining"
ISBN
5562-3162
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
1-5
Publisher name
VÚZ Bratislava
Place of publication
Bratislava
Event location
Bratislava
Event date
Oct 25, 2004
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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