scholarly journals Functionally Graded Structure Design for Heat Conduction Problems using Machine Learning

Author(s):  
Yunho Moon ◽  
Cheolwoong Kim ◽  
Soonok Park ◽  
Jeonghoon Yoo
2010 ◽  
Vol 97-101 ◽  
pp. 1332-1335
Author(s):  
Ping Feng ◽  
Yue Hui He ◽  
Xiao Hua Sun ◽  
Guang Hong Ni ◽  
Yi Hua Sun

The invention of functionally graded structure cemented carbide is a significant revolution. In this paper, graded structure cemented carbide with cubic carbide free layer (CCFL) was prepared. Using scanning electron microscope (SEM), metallographical microscope, electroprobe microanalyzer and microindentation, the gradient characteristics were investigated. The variation in elemental compositions from surface to inner is gradient, the concentrations of nitrogen and titanium are very low in surface layer, only element of tungsten, cobalt and carbon exist. A cobalt concentration peak occurs, which is higher than the average composition in bulk. Wherein binder phase piles up, its volume fraction is much higher than nominal value, resulting in a decrease in hardness and forming a tough layer.


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