Search for dissertations about: "annealing"

Showing result 21 - 25 of 372 swedish dissertations containing the word annealing.

  2. 21. Active Noise Control of Enclosed Sound Fields Optimising the Performance

    Author : Per Sjösten; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optimising actuator and sensor positions; hybrid controller for anc; fast feedforward algorithm; multiple-error algorithm; active noise control; complex lms; multichannel feedforward algorithm; simulated annealing; mean-field annealing; multiple-reference controller;

    Abstract : Active noise control is the art of reducing a primary unwanted sound field by interference with an actively created secondary sound field. To achieve high reduction, it is crucial to obtain both temporal and spatial matching between the primary and the secondary sound fields. READ MORE

  4. 22. Study and empirical modelling of recrystallisation annealing of martensitic chromium steel strip by means of EBSD

    Author : Sorin Ionescu-Gabor; KTH; []
    Keywords : EBSD; Etching; Metallography; Cold Rolling; Recrystallisation annealing;

    Abstract : Recrystallisation annealing, a repeated heat treatment between different stages of cold rolling of martensitic chromium steel strip, is successful when neither high rolling forces nor wear of the working rolls occur during the subsequent cold rolling. Mechanical properties as tensile strength, yield, elongation or hardness have been, by tradition, the criteria that described the quality of the annealing process. READ MORE

  5. 23. Substructure dynamics : In-situ annealing coupled with numerical modelling

    Author : Verity Borthwick; Stockholms universitet; []
    Keywords : ;

    Abstract : The understanding of substructural behaviour during post-deformational annealing is key to interpreting rheological adjustments during tectonic change, and the processes which cause them. The focus of this study is to use coupled in-situ experimental techniques with numerical simulation to increase understanding of substructure dynamics in geological materials. READ MORE

  6. 24. Microstructural Development of Nanocrystalline Ni- and Co-Based Materilas upon Annealing

    Author : Melina da Silva; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ni; grain growth; nanocrystalline materials; Co-P; Ni-Fe; thermal stability; TEM in-situ annealing;

    Abstract : Nanocrystalline materials are a relatively new group of materials that are constituted by crystals/grains of a few nanometers in size. Because their mechanical, physical and chemical properties are often superior compared to their microcrystalline counterparts, these materials are attractive for many industrial applications. READ MORE

  7. 25. Annealing Induced Modifications in (GaMn)As: Electron Spectroscopic Studies

    Author : Intikhab Ulfat; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Magnetic semiconductor; electron spectroscopy;

    Abstract : By incorporating magnetism into semiconductors, it may possibly be viable to enhance the functionality of materials. An exceptionally appealing material in this context is GaAs, which can be doped with Mn atoms. (GaMn)As has fascinated research community as a promising candidate for spintronic application. READ MORE