D 2006

Carbon Activity in Advanced Steels

HODISZ, Zdeněk and Jiří SOPOUŠEK

Basic information

Original name

Carbon Activity in Advanced Steels

Name in Czech

Aktivita uhlíku vpokročilých ocelích

Authors

HODISZ, Zdeněk (203 Czech Republic) and Jiří SOPOUŠEK (203 Czech Republic, guarantor)

Edition

2006. vyd. Brno, VI. Pracovní setkání fyzikálních chemiků a elektrochemiků, p. 42-43, 2 pp. 2006

Publisher

Masarykova univerzita v Brně

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10403 Physical chemistry

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/06:00017050

Organization unit

Faculty of Science

Keywords in English

Equilibria;Calphad;DICTRA; weld;steel;heat-resistant
Změněno: 15/8/2006 10:59, prof. RNDr. Jiří Sopoušek, CSc.

Abstract

V originále

From thermodynamic points of view, the steels are Fe-Me-L-C based closed systems where Me means the metal elements (Cr, Mo, V, Mn, Ni,...) and L are the light elements (N, B,...). The steel phase microstructure depends on the heat treatment during production and exploitation. A major phase is solid solution and minor phases are different stoichiometric and/or non-stoichiometric phases (carbides, carbonitrides, nitrides, intermetallic phases). Thermodynamics deals with equilibrium states, which can be experimentally reached within reasonable annealing time for the steels only at temperatures above approximately 500stC. The equilibrated phases coexisting at given temperature, pressure, and composition can be found on phase diagram of the steel. Another way is to identify equilibrated phases experimentally after long time equilibrating. The carbon activity in steel at given temperature and pressure is very important value, which cannot be evaluate by single experimental way at present.

In Czech

Aktivita uhlíku vpokročilých ocelích

Links

MSM0021622410, plan (intention)
Name: Fyzikální a chemické vlastnosti pokročilých materiálů a struktur
Investor: Ministry of Education, Youth and Sports of the CR, Physical and chemical properties of advanced materials and structures