Search for dissertations about: "cemented"

Showing result 1 - 5 of 136 swedish dissertations containing the word cemented.

2. 1. Cemented Carbide Sintering : Constitutive Relations and Microstructural Evolution

   Author : Anders Petersson; KTH; []
   Keywords : Cemented carbides; Sintering; Constitutive relations; Microstructure; Densification; Modelling;

   Abstract : Cemented carbides based on tungsten carbide and cobalt arecommonly produced by a powder metallurgy route including liquidphase sintering. The pressed compact densifies to almost halfits volume during sintering due to pore elimination. READ MORE

4. 2. Sintering of cemented carbides : experiments and modeling

   Author : Sven Haglund; KTH; []
   Keywords : ;

   Abstract : During sintering of cemented carbides large volumetricshrinkage takes place. About half the volume of the originalgreen body is lost during this process. Due to lotal densitydifferentes within the green body undesired shape changes mayalso occur during sintering. READ MORE

5. 3. WC grain growth during sintering of cemented carbides : Experiments and simulations

   Author : Karin Mannesson; John Ågren; Annika Borgenstam; Håkan Engqvist; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cemented carbide; Grain growth; Abnormal grain growth; Image analysis; Modeling; 3-D grain size distribution; Inverse Saltykov; Materials science; Teknisk materialvetenskap;

   Abstract : Cemented carbides are composite materials consisting of a hard carbide and a ductile binder. They are powdermetallurgically manufactured, where liquid-phase sintering is one of the main steps. The most common cemented carbide consists of WC and Co and it is widely used for cutting tools. READ MORE

6. 4. Strength and Stability of Interfaces in Cemented Carbides

   Author : Mikael Christensen; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; adhesion; segregation; plastic deformation; microstructure; interfaces; electron structure calculations; cermets; sintering; infiltration; cemented carbides; grain boundaries; cutting tools; density-functional theory; hardmetals; WC-Co; wetting;

   Abstract : Cemented carbides are hard composite materials of great technological importance. They are widely used as tool materials in a large variety of applications where the demands on hardness and toughness are high, including e.g.≈mining, turning, cutting, and milling. READ MORE

7. 5. Atomistic modeling of interfaces in WC-Co cemented carbides

   Author : Martin Petisme; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; analytic bond order potentials; weing; WC-Co; grain boundary sliding; grain boundaries; density functional theory; molecular dynamics; interfaces; cemented carbides;

   Abstract : Grain and phase boundaries are crucial in understanding the properties of real materials. In this thesis, interfaces in WC–Co cemented carbide are modeled atomistically using density functional theory (DFT) and analytic interatomic potentials. READ MORE