TY - THES AU - Niu, Shuai TI - Effect of mechanical vibration on ingot solidification PB - Rheinisch-Westfälische Technische Hochschule Aachen VL - Dissertation CY - Aachen M1 - RWTH-2019-04332 SP - 1 Online-Ressource (X, 201 Seiten) : Illustrationen PY - 2019 N1 - Veröffentlicht auf dem Publikationsserver der RWTH Aachen University N1 - Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2019 AB - Grain refinement is a critical method to improve the mechanical and anti-fatigue properties of castings. Increasing the fraction of equiaxed grains can remarkably improve the ingot quality regarding solidification structure, particularly the center line segregation. The effect of low-frequency mechanical vibration (MV) on the solidification structure was investigated and evaluated by experimental methods using water model as well as hot ingot casting model and numerical modelling by using Finite Difference and Cellular Automaton methods. Experimental results of the water model are presented for the solidification of a 30 LB - PUB:(DE-HGF)11 DO - DOI:10.18154/RWTH-2019-04332 UR - https://publications.rwth-aachen.de/record/760678 ER -