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A model to predict the fracture distance of cleavage fracture as a function of temperature

✍ Scribed by Yun-Chan Jang; Youngseog Lee

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
257 KB
Volume
78
Category
Article
ISSN
0013-7944

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✦ Synopsis

We propose a model which computes the fracture distance of materials (reactor pressure vessel steel, C-Mn steel, and four heat-treated HSLA steels) as a function of temperature. The fracture distance, an important length scale for predicting cleavage fracture, is determined using the parameters such as mean grain size, fracture toughness and yield stress of the material in the range of Γ€250 to 0 Β°C. The fracture distances computed from the proposed model agreed with measurements for the materials. Some differences between the predictions and the measurements were observed for HSLA steel with fine grain size (30 lm) and coarse grain size (55 lm).

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