Solvus temperature of modified Z-phase in AISI316LN+V+Nb steel

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F16%3A86100125" target="_blank" >RIV/61989100:27360/16:86100125 - 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

Solvus temperature of modified Z-phase in AISI316LN+V+Nb steel

Original language description

Creep resistance of steels in the field of dislocation creep strongly depends on both thermodynamic and dimensional stability of minor phases. Precipitation of many minor phases in heat resistant steels is now very well documented. But it is not true in the case of some interstitial minor phases in nitrogen-bearing steels. For example, a limited amount of information is available about precipitation of a complex nitride (Nb,V)CrN, so called modified Z-phase, in austenitic steels. This paper deals with the studies on precipitation behaviour of the modified Z-phase in an AISI 316LN steel with vanadium and niobium additions. Thermodynamic equilibrium phases for the steel investigated were calculated using the ThermoCalc software. Furthermore, laboratory annealing of specimens was carried out in the temperature interval from 550 to 1250 oC for times 1, 20 and 50 h. Kinetics of precipitation of the modified Z-phase in the austenitic matrix was fast. Precipitation of this minor phase was observed in the temperature range of 750 - 1050 oC. The solvus temperature corresponded well with the results of thermodynamic calculations. The solvus temperature of the modified Z-phase in the steel investigated was determined to be about 250 oC lower than that calculated for NbCrN type of Z-phase in the AISI 316LN + 0.1Nb austenitic steel.

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

580-585

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

000391251200092