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.
Use of Instrumented Charpy Impact Tests for the Determination of Fracture Toughness Values / H. Herold; M. Streitenberger; G.P. Cammarota; A. Casagrande; A. Morri; G. Garagnani. - In: PRAKTISCHE METALLOGRAPHIE. - ISSN 0032-678X. - STAMPA. - 47:1(2010), pp. 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.
