Paper Title:

Influence of Phosphorus Grain Boundary Segregation on Fracture Behaviour of Iron-Base Alloys

Periodical Materials Science Forum (Volumes 567 - 568)
Main Theme Materials Structure & Micromechanics of Fracture V
Edited by Pavel Šandera
Pages 33-38
DOI 10.4028/www.scientific.net/MSF.567-568.33
Citation Jozef Janovec et al., 2007, Materials Science Forum, 567-568, 33
Online since December 2007
Authors Jozef Janovec, Jaroslav Pokluda, Pavel Lejček
Keywords Auger Electron Spectroscopy (AES), Austenitic Stainless Steel, Fe-Si-P Alloy, Grain Boundary, Instrumented Impact Test, Precipitation, Segregation, TEM
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Chemical and structural changes at the grain boundaries were investigated to quantify their influence on fracture behaviour of austenitic stainless steels and model ferritic Fe-Si-P alloys. The balance between the size and the area density of intergranular particles was found to be one of the most decisive factors influencing sensitivity of the steels to intergranular fracture. The precise dependence of the energy of intergranular fracture on the phosphorus grain boundary concentration was also determined.