In this contribution the analysis of influential process parameters such as temperature, strain, strain-rate and different directions regarding the extrusion on flow curves is given. On the basis of performed additional experiments of upsetting small cylindrical samples of AZ80 alloy on hydraulic press the impact of anisotropy on material flow is explained. Findings obtained by experiments are good basis for calibrating the FEM models. The results, show that process parameters and anisotropy have strong influence on behavior of magnesium wrought alloys during forging processes.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 11198747Design of small laboratory equipment that enables simulation of material behavior in practice is a very important steep to better understanding of the phenomena in materials. In the contribution it is presented new designed laboratory equipment that enables simulations of wear process on dies in aluminum hot extrusion. The equipment serves for scientific as well as for educational purposes.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 919135This book presents the latest technological innovations in underground design, construction, and operation and comprehensively discusses novelties in ground improvement, simulation, process integration, safety, monitoring, environmental impact, equipment, boring and cutting, personnel training, materials, robotics and more. The novelties presented are the result of a big research project focused on advancing underground engineering, in which many players in the discipline have been involved. The contribution presents latest developments of process-oriented numerical simulation this field.
B.06 Other
COBISS.SI-ID: 1006943This contribution deals with the effects of chemical composition and modification on the development of spheroidal graphite cast iron (SGI) microstructure through the application of simple thermal analysis in the early production phases of SGI. This is based on the cooling curves and the specific solidification temperature, i.e. eutectoid transformations and condition of alloy with nucleation potential. The perlite matrix with a decreasing of ferrite content, increases SGI’s tensile strength, while plasticity limit and uctibility are decreased.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 960095Contribution describes the fundamental research in a new complete “in situ” thermal and chemical analysis for quality control of Al alloys. The influence of grain refiners, modifiers and influence of cooling rate on microstructure of Al-Si alloys have been described. The relation between largeness of microstructure constituents and cooling rate versus nucleation potential was determined with physical models as well. On a basis of numerous quantities relations which describe the microstructure, physical, mechanical and technological properties the new method for quality control was developed.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 921183