A Comparative Study of Non-Monotonicity for Unidirectional and Cross Rolling of Niobium Sheet

Gál, Viktor and Szűcs, Máté and Szabó, Gábor and Krállics, György (2020) A Comparative Study of Non-Monotonicity for Unidirectional and Cross Rolling of Niobium Sheet. Materials Science and Engineering, 45 (1). pp. 84-95. ISSN 2063-6792

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Abstract

Under cold forming conditions, a niobium plate with 50 × 50 × 4 mm size was rolled using two different types of technology. In first one, the size and properties of the plates were changed by a unidirectional successive multi-step procedure. In another one, cross-rolling with the same reduction was used to achieve the changes in size and properties. Following the experiments, 3D finite element process modelling was performed with DE-FORM software in order to determine the deformation history and state of the two processes for the same plate thickness. This factor is directly related to the microstructure of the mate-rial and its related change. The performed process modelling was controlled by comparing the measured and calculated rolling forces and torques.

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