Selection of Compositions in Ti-Cr-C-Steel, Ti-B, Ti-B-Me Systems and Establishing Synthesis Parameters for Obtaining Product by "SHS-Electrical Rolling"

World Multidisciplinary Earth Sciences Symposium 2017

Aslamazashvili, Zurab^1 ; Tavadze, Giorgi^1 ; Chikhradze, Mikheil^1 ; Namicheishvili, Teimuraz^1 ; Melashvili, Zaqaria^1

LEPL F.Tavadze, Institute of Metallurgy and Materials Science, Tbilisi

0186, Georgia^1

关键词: Adiabatic temperature;    Liquid phase contents;    Materials and products;    Quality of materials;    Self-propagating high temperature synthesis;    Synthesis parameters;    Synthesis temperatures;    Thermo dynamic analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/95/4/042036/pdf
DOI  :  10.1088/1755-1315/95/4/042036

来源: IOP

【 摘 要 】

For the production materials by the proposed Self-propagating High-Temperature Synthesis (SHS) - Electric Rolling method, there are no limitations in the length of the material and the width only depends on the length of rolls. The innovation method enables to carry out the process in nonstop regime, which is possible by merging energy consuming SHS method and Electrical Rolling. For realizing the process it is mandatory and sufficient, that initial components, after initiation by thermal pulse, could interaction with the heat emission, which itself ensures the self-propagation of synthesis front in lieu of heat transfer in the whole sample. Just after that process, the rolls instantly start rotation with the set speed to ensure the motion of material. This speed should be equal to the speed of propagation of synthesis front. The synthesized product in hot plastic condition is delivered to the rolls in nonstop regime, simultaneously, providing the current in deformation zone in order to compensate the energy loses. As a result by using the innovation SHS -Electrical Rolling technology we obtain long dimensional metal-ceramic product. In the presented paper optimal compositions of SHS chasms were selected in Ti-Cr-C-Steel, Ti-B and Ti-B-Me systems. For the selection of the compounds the thermodynamic analysis has been carried out which enabled to determine adiabatic temperature of synthesis theoretically and to determine balanced concentrations of synthesized product at synthesis temperature. Thermodynamic analysis also gave possibility to determine optimal compositions of chasms and define the conditions, which are important for correct realization of synthesis process. For obtaining non porous materials and product by SHS-Electrical Rolling, it is necessary to select synthesis and compacting parameters correctly. These parameters are the pressure and the time. In Ti-Cr-C-Steel, Ti-B and Ti-B-Me systems the high quality (nonporous or low porosity