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Mechanical and technological, as well as fracture mechanics, investigations were carried out on ten heats of pressure vessel and piping steels. The purpose was to demonstrate and quantify the influence of different microstructures, strength, and temperature on the fracture mechanics parameters for static and dynamic initiation and crack arrest. It is shown that a direct correlation exists between the temperature dependence of the Charpy V-notch energy and the fracture mechanics parameters. In the lower shelf and transition area the design and reference curves according to ASME III and XI and KTA 3201.2 give a conservative estimate of the measured parameters. In the upper shelf region, however, not all of the investigated steels exceeded the required values. In addition, the dependence of the fracture mechanics parameters on the grain size, hardness, strength, and location of the specimens within a plate were determined.

Additional information

Authors: KUSSMAUL K, Universität Stuttgart, Staatliche Materialprüfungsanstalt (DE);GILLOT R, Universität Stuttgart, Staatliche Materialprüfungsanstalt (DE)
Bibliographic Reference: EUR 13859 DE (1992) 110 pp., FS, ECU 10
Availability: (2)
ISBN: ISBN 92-826-3435-3
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