Correlation between the temperature distribution and the structure of resistance sintered tungsten bars
- Maria Trzaska
In the present study the correlation between the microstructural non-homogeneity and the distribution of the temperature field during the tungsten bar resistance sintering has been examined in detail in order to find the major factors that influence the structure of the tungsten bar after sintering. A mathematical model of the sintering process and its discrete equivalent have been used for appropriate computer simulations to identity the temperature field distribution within the whole volume of the sintered bar. In all the numerical calculations the model's parameters were chosen so as to correspond to a given manufacturing process. In the paper the main attention was paid to the qualitative and quantitative examinations of the microstructure of the tungsten bar after sintering. The distribution functions of the parameters characterizing the tungsten bar microstructure were determined and the results are presented. The temperature field obtained and its gradient distributions were compared with the fracture microstructures of the tungsten bar after sintering. An analysis of the data obtained has shown that the non-uniform distribution of the temperature field is the main cause of the non-homogeneous microstructure of resistance-sintered tungsten bar.
- Record ID
- Journal series
- International Journal of Refractory Metals & Hard Materials, ISSN 0263-4368
- Issue year
- DOI:10.1016/0263-4368(95)00048-8 Opening in a new tab
- http://www.sciencedirect.com/science/article/pii/0263436895000488 Opening in a new tab
- Score (nominal)
- Publication indicators
- : 2006 = 0.803 (2) - 2007=1.463 (5); = 9
- Citation count
- Uniform Resource Identifier
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.