Carbon profile analysis of Fe-Cr-C/Fe-Cr-Ni-C diffusion joints

SOPOUŠEK, Jiří and Bořivoj MILLION. Carbon profile analysis of Fe-Cr-C/Fe-Cr-Ni-C diffusion joints. Kovové materiály. Bratislava: Ústav fyziky materiálov Bratislava, 2003, vol. 41, No 2, p. 118-126. ISSN 0023-432X.

Basic information

• Original name: Carbon profile analysis of Fe-Cr-C/Fe-Cr-Ni-C diffusion joints
• Authors: SOPOUŠEK, Jiří (203 Czech Republic, guarantor) and Bořivoj MILLION (203 Czech Republic).
• Edition: Kovové materiály, Bratislava, Ústav fyziky materiálov Bratislava, 2003, 0023-432X.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10403 Physical chemistry
• Country of publisher: Slovakia
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 0.563
• RIV identification code: RIV/00216224:14310/03:00008457
• Organization unit: Faculty of Science
• UT WoS: 000182522600005
• Keywords in English: weldment; steel; DICTRA; caxbon profile; simulation
• Tags: caxbon profile, DICTRA, simulation, steel, weldment

Abstract

Former experimental observations of Fe-Cr-C/Fe-Cr-Ni-C weldments are compared in this paper with simulated results. The simulation method is based on the CALPHAD approach completed with theory of multi-component bulk diffusion, the local condition of phase equilibria, and assumption that diffusion is the process that controls the rate of phase transformation. The occurred overall carbon concentration peaks near the welded interface are explained by carbide reactions. Both phase and concentration simulated profiles correspond closely to the foregoing findings. Stable local equilibrium in the diffusion zone and the thermodynamic stability of dissimilar welded joints are discussed.

Links

• GA106/00/0855, research and development project: Name: Kinetika precipitace karbidů v Cr-Mo ocelích

Investor: Czech Science Foundation, Kinetics of carbide precipitation in Cr-Mo steels