Integrated Mechanical-Metallurgical Approach to Modeling of Solidification Cracking in Welds

Autor: V. Ploshikhin, Andrey Prikhodovsky, Hans-Werner Zoch, Maksym Makhutin, A. S. Ilin
Rok vydání: 2005
Předmět:
Zdroj: Hot Cracking Phenomena in Welds ISBN: 3540223320
DOI: 10.1007/3-540-27460-x_12
Popis: The presented approach is based on experimental observations which clearly show that the hot cracking phenomenon is a result of accumulation of macroscopic tensile strains in a microscopic intergranular film of liquid enriched with segregating elements at the final stage of solidification. The modeling takes into account the effects of strain accumulation as well as the influence of the microstructure and the thermo-dynamical properties of the welded material. The integrated approach provides a clear phenomenological interrelation between parameters of the welding process, properties of the welded material and the cracking susceptibility. It is successfully used for the development of technological means, such as a multibeam welding, for eliminating solidification cracking.
Databáze: OpenAIRE