Automatic segmentation of the secondary austenite-phase island precipitates in a superduplex stainless steel weld metal

• Type: Article in International Conference Proceedings Book
• Date: 2011

Authors

Victor H. C. Albuquerque (Author) FEUP; Rodrigo Y. M. Nakamura (Author) Other; João P. Papa (Author) Other; Cleiton C. Silva (Author) Other; João Manuel R. S.Tavares (Author) FEUP

Conference proceedings International

Title: Computational Vision and Medical Image Processing: VipIMAGE 2011

Pages: 161-166

III ECCOMAS Thematic Conference on Computational Vision and Medical Image Processing: VipIMAGE 2011

Olhão, Portugal, 14-14 October 2011

Indexing

ISI Web of Science

Scopus

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences

Other information

Abstract (EN): Duplex and superduplex stainless steels are class of materials of a high importance for engineering purposes, since they have good mechanical properties combination and also are very resistant to corrosion. It is known as well that the chemical composition of such steels is very important to maintain some desired properties. In the past years, some works have reported that gama 2 precipitation improves the toughness of such steels, and its quantification may reveals some important information about steel quality. Thus, we propose in this work the automatic segmentation of gama 2 precipitation using two pattern recognition techniques: Optimum-Path Forest (OPF) and a Bayesian classifier. To the best of our knowledge, this if the first time that machine learning techniques are applied into this area. The experimental results showed that both techniques achieved similar and good recognition rates.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6