| 1. |
- Borgenstam, Annika, et al.
(författare)
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Model for nucleation of isothermal martensite
- 2001
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 45:8, s. 917-922
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Tidskriftsartikel (refereegranskat)abstract
- Kaufman and Cohen's model for thermally activated growth of preexisting embroys of isothermal martensite was defined with a series of obstacles but they only considered jumps in one direction. Jumps in both directions across obstacles were recently considered and the activation energy for the net reaction was described. That nucleation model is now developed further.
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| 2. |
- Gouldstone, Andrew, et al.
(författare)
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Onset of plastic yielding in thin metal lines deposited on substrates
- 1999
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 41:3, s. 297-304
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Tidskriftsartikel (refereegranskat)abstract
- A thermoelastic analysis of patterned lines on substrates to determine the critical conditions for the onset of yielding is investigated, which provides a new analytical tool for determining the yield properties of lines relative to those of films of the same thickness. Verification of the theory is provided with the aid of finite element simulations, and a method for experimentally extracting the plastic properties of lines is also outlined.
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| 3. |
- Hillert, M., et al.
(författare)
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Comparison between solute drag and dissipation of Gibbs energy by diffusion
- 2001
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 45:2, s. 221-227
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Tidskriftsartikel (refereegranskat)abstract
- The solute drag and the dissipation of Gibbs energy in a partitionless phase transformation are compared numerically. They agree if the solute drag is compared with the driving force over the interface and the solute spike in front of the interface. The dissipation can be evaluated over this whole region or over the interface alone.
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| 4. |
- Hillert, Mats, et al.
(författare)
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Discussion on local equilibrium at solid/liquid interfaces during melting
- 2002
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 46:6, s. 455-457
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Tidskriftsartikel (refereegranskat)abstract
- Melting experiments were recently used to support the assumption of considerable deviation from local equilibrium. It is now claimed that the observed velocities of melting were low enough to allow diffusion in the solid to give a well developed spike of the solute in front of the migrating interface making a strong deviation from local equilibrium unlikely.
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| 5. |
- Hillert, Mats
(författare)
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Nature of local equilibrium at the interface in the growth of ferrite from alloyed austenite
- 2002
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 46:6, s. 447-453
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Tidskriftsartikel (refereegranskat)abstract
- The increase over the years of experimental information on the effect of alloying elements on the transformation of austenite to ferrite and of the theoretical understanding is reviewed. The prediction of two kinds of transitions in behavior is described and the importance of exploring them experimentally is stressed.
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| 6. |
- Hillert, Mats
(författare)
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Paradigm shift for bainite
- 2002
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 47:3, s. 175-180
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Tidskriftsartikel (refereegranskat)abstract
- One of the pictures of the mechanism of the bainitic transformation has been based upon the paradigm that it is closely related to the martensitic transformation. It has resulted in an unjustified belief in high growth velocity and high supersaturation of carbon in bainitic ferrite. It seems that the time is now right for abandoning that paradigm.
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| 7. |
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| 8. |
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| 9. |
- Larsson, Henrik, et al.
(författare)
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A random-walk approach to diffusion controlled growth
- 2003
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 49:6, s. 521-526
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Tidskriftsartikel (refereegranskat)abstract
- The new method does not require formulation of any special conditions at the moving phase interface. Although only binary systems are treated at present an extension to any number of components seems straightforward. A good agreement with conventional front tracking techniques (DICTRA) is found.
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| 10. |
- Molina-Aldareguia, J.M., et al.
(författare)
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Kink formation around indents in laminated Ti3SiC2 thin films studied in the nanoscale
- 2003
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Ingår i: Scripta Materialia. - 1359-6462 .- 1872-8456. ; 49:2, s. 155-160
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Tidskriftsartikel (refereegranskat)abstract
- The deformation mechanisms in ductile Ti3SiC2(0 0 0 1) single-crystal films have been analysed by nanoindentation and cross-sectional transmission electron microscopy. Permanent deformation includes formation of kink bands, as the nanolaminated material buckles out at the perimeter of the contact area, and delamination cracks. Evidence is presented for incipient kink-band formation.
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