The effect of yield strength mismatch on the fracture behavior of welded nodular cast iron
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, cilt.387, ss.357-360, 2004 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 387
- Basım Tarihi: 2004
- Doi Numarası: 10.1016/j.msea.2003.11.085
- Dergi Adı: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.357-360
- Anahtar Kelimeler: J-integral, mismatch, stress triaxiality, crack mouth opening displacement, nodular iron
- Dokuz Eylül Üniversitesi Adresli: Evet
Özet
In this study, fracture toughness (J-integral) values in cracked welded nodular iron were determined experimentally, and stress-strain analyses were done by the finite element method, for different crack sizes and locations with various strength levels. As a result, the effect of yield strength mismatch on the constraint around crack tip was discussed by means of stress triaxiality (ST) and plastic strain. It was found that ST values increase with crack length. Different regions in the weldment affect the extent of plastic deformation in the material. (C) 2004 Elsevier B.V. All rights reserved.