Notch sensitivity of Sanicro 25 in small punch creep test
作者： P. Dymáček , F. Dobeš , D. Andrés
DOI: 10.1016/J.TAFMEC.2019.02.003
关键词:
摘要: Abstract Small punch creep tests of unnotched and notched 8 mm discs new austenitic steel Sanicro 25 were performed at 700 °C. Side notches through the disc thickness proposed by Lacalle different lengths ranging from 3.0 to 4.5 mm applied for this study. It was found that notch length influences time rupture minimum displacement rate, however no apparent signs crack initiation observed on recorded time-displacement rate curves 400 N force. The shortest fastest obtained 3.5 mm, while longest slowest 4.25 mm. fracture had a “star” shape, with multiple cracks, which indicates lower ductility. A larger circular cap is obvious materials high ductility not present in all small performed.
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