Search for dissertations about: "deformation bands"

Showing result 1 - 5 of 34 swedish dissertations containing the words deformation bands.

2. 1. Deformation behaviour and chemical signatures of anorthosites: : Examples from southern West Greenland and south-central Sweden

   Author : Henrik Svahnberg; Sandra Piazolo; Anders Scherstén; Holger Stünitz; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; anorthosite; plagioclase; deformation; strain localisation; fluid-rock interaction; electron backscatter diffraction EBSD ; Solid earth geology and petrology; Berggrundsgeologi och petrologi; Mineralogy; Petrology and Geochemistry; mineralogi; petrologi och geokemi;

   Abstract : Plagioclase is the most abundant mineral in the lower crust and it is thus important to constrain the behaviour of plagioclase during deformation. Anorthosites, which are plagioclase-rich rocks, are common in Archaean cratons but their origin and rheological importance is still debated. READ MORE

4. 2. Microstructural Evolution In As-cast Alloys during Plastic Deformation

   Author : Mitra Basirat; Pär Jönsson; Hasse Fredriksson; Jacques Lacaze; KTH; []
   Keywords : plastic deformation; compression test; recrystallization; deformation band; As-cast; microsegregation; carbide dissolution; disordered structure; order disorder transformation; twining; steel; β brass; copper; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ;

   Abstract : The effect of deformation on microstructural changes in metals and alloys is the subject of considerable practical interest. The ultimate goal is to control, improve and optimize the microstructure and texture of the finished products produced by metal forming operations. READ MORE

5. 3. On the deformation behavior and cracking of ductile iron; effect of microstructure

   Author : Keivan Amiri Kasvayee; Anders E.W. Jarfors; Jens Bergström; Jönköping University; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Spherical graphite iron; component casting; high silicon ductile iron; digital image correlation DIC ; in-situ tensile testing; in-situ cyclic testing; DIC pattern generation; pit etching; micro-scale deformation; micro-crack; finite element analysis FEA ; focused ion beam FIB milling; segjärn; komponentgjutning; högkisellegerat segjärn; digital image correlation DIC ; insitu dragprovning; in-situ cyklisk provning; DIC-mönstergenerering; grop-etsning; mikroskalig deformation; mikrosprickor; finite element analys FEA ; fokuserad jonstråle FIB avverkning;

   Abstract : This thesis focuses on the effect of microstructural variation on the mechanical properties and deformation behavior of ductile iron. To research and determine these effects, two grades of ductile iron, (i) GJS-500-7 and (ii) high silicon GJS-500-14, were cast in a geometry containing several plates with different section thicknesses in order to produce microstructural variation. READ MORE

6. 4. Viscous-brittle deformation of shallowly emplaced silicic magma : Implications for outgassing and volcanic hazards

   Author : Taylor Witcher; Steffi Burchardt; Edward Llewellin; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; magma deformation; magmatic outgassing; magmatic intrusions; rhyolite; Sandfell laccolith; crystal mush; volcanic hazards; Geovetenskap med inriktning mot mineralogi; petrologi och tektonik; Earth Science with specialization in Mineral Chemistry; Petrology and Tectonics;

   Abstract : Silicic magma in the shallow crust has the potential to violently erupt, depending on its ability to release overpressures caused by magmatic volatiles (outgassing). Deformation-induced outgassing is prevalent along volcanic conduit margins, where ascending magma is sheared at high rates. READ MORE

7. 5. Coriolis perturbed rotational bands in nuclei of different deformation : a study using in-beam accelerator techniques

   Author : Wlodzimierz Klamra; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : .... READ MORE