HODISZ, Zdeněk and Jiří SOPOUŠEK. Carbon Activity in Advanced Steels. In VI. Pracovní setkání fyzikálních chemiků a elektrochemiků. 2006th ed. Brno: Masarykova univerzita v Brně, 2006, p. 42-43.
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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
Original language English
Type of outcome Proceedings paper
Field of Study 10403 Physical chemistry
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14310/06:00017050
Organization unit Faculty of Science
Keywords in English Equilibria;Calphad;DICTRA; weld;steel;heat-resistant
Tags CALPHAD, DICTRA, equilibria, heat-resistant, steel, weld
Changed by Changed by: prof. RNDr. Jiří Sopoušek, CSc., učo 2405. Changed: 15/8/2006 10:59.
Abstract
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.
Abstract (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
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