There were many attempts to correlate Charpy absorbed energy with fracture parameters. Most of these gave empirical or semi-theoretical equations showing this correlation. In the present paper the dynamic yield strength is used to obtain the relation between Charpy V and KIC. Comparison is made between three structural steels (1.0570 – 1.0511 – 1.8900) and the alloy Ti-Al6-V4. For the steels, fracture toughness experimental values are coherent with those based on data determined with the derived relation. For Ti-Al6-V4 the values deviate from each other, particularly at room temperature, when the contribution of α-phase is more important.
H. Herold, M. Streitenberger, G.P. Cammarota, A. Casagrande, A. Morri, G. Garagnani (2010). Use of Instrumented Charpy Impact Tests for the Determination of Fracture Toughness Values. PRAKTISCHE METALLOGRAPHIE, 47(1), 34-44.
Use of Instrumented Charpy Impact Tests for the Determination of Fracture Toughness Values
CASAGRANDE, ANGELO;MORRI, ALESSANDRO;
2010
Abstract
There were many attempts to correlate Charpy absorbed energy with fracture parameters. Most of these gave empirical or semi-theoretical equations showing this correlation. In the present paper the dynamic yield strength is used to obtain the relation between Charpy V and KIC. Comparison is made between three structural steels (1.0570 – 1.0511 – 1.8900) and the alloy Ti-Al6-V4. For the steels, fracture toughness experimental values are coherent with those based on data determined with the derived relation. For Ti-Al6-V4 the values deviate from each other, particularly at room temperature, when the contribution of α-phase is more important.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
