Contradiction in Fracture- and Notch Toughness of High Purity Low Alloy Steels.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F01%3APU20106" target="_blank" >RIV/00216305:26210/01:PU20106 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Contradiction in Fracture- and Notch Toughness of High Purity Low Alloy Steels.
Original language description
Values of initial fracture toughness and impact notch toughness of high purity USSLA steel were determined for 6 different heat treatments leading to 3 different prior austenite grain sizes d. Fracture surfaces of specimens exhibited transgranular as well as intergranular morphology. Observed extreme contradiction in fracture- and notch toughness behavior can be explained in terms of intergranularly induced crack tip shielding working particularly during the fracture toughness test of coarse grainedd specimens. Inverse behaviour of specimens for impact tests is associated with low resistance of coarse grained structures against crack nucleation caused predominantly by pronounced carbide precipitation and long dislocation mean free paths. Quantitative assessment of the shielding effect by means of both the 3D grain boundary network model (Poisson-Voronoi tessellation) and the FRANC3D program (boundary element method) enables to obtain realistic values of surface energy related to correc
Czech name
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Czech description
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Project
<a href="/en/project/OC%20517.30" target="_blank" >OC 517.30: Effect of Impurity Embrittlement and Microstructurally Induced Shielding on Crack Stability and Growth Resistance in Low Alloy Steels</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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