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Erschienen in:
01.11.2012
Change in X80 steel plate mechanical properties during pipe manufacture
Erschienen in: Metallurgist | Ausgabe 7-8/2012
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Abstract
The effect of pipe processing on mechanical properties is studied for rolled plate 15.3, 18.4, and 22.0 mm thick of X80 steel during manufacture of LSAW gas pipes 1219 mm in diameter in relation to thickness and as-supplied condition of the rolled sheet (controlled rolling or controlled rolling + tempering at 620°C), and direction of sample selection (transverse or longitudinal). It is shown that final mechanical property formation occurs in pipe processing and depends on a combination of rolled product thickness, as-supplied condition, shape of stress–strain diagrams, and direction of sample selection for mechanical tests.