Original scientific paper

The weld-pool solidification mode of ferritic stainless steels

J. Tušek ; Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia
A. Lešnjak ; QTechna, Ljubljana, Slovenia
M. Pleterski ; Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia
D. Klobčar ; Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia

Abstract

The paper presents the analysis of solidification mode at gas tungsten arc welding (GTAW) of AISI 430 ferritic stainless steel. Two solidification modes (epitaxial and equiaxial) were discovered, which have a major influence on a weld tensile strength. The optimal welding parameters for ferritic stainless steels were found in a narrow range. They should be selected according to mechanical strength of the welded joints and not only according to their visual appearance.

Keywords

ferritic stainless steel; grain growth; epitaxial; equaxial; GTAW

Hrčak ID:

74839

URI

https://hrcak.srce.hr/74839

Publication date:

2.4.2012.

Article data in other languages: croatian

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