Advanced search

Showing result 1 - 5 of 34 swedish dissertations matching the above criteria.

2. 1. Finite element simulation of transformation plasticity in martensitic transformation

   Author : Kjell Simonsson; Sören Sjöström; Linköpings universitet; []
   Keywords : Phase transformations. transformation plasticity; micromechanical models; martensitic transformation; finite element simulations. thermodynamics; moving interface; mechanical dissipation; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : This study is concerned with the simulation of transformation plasticity in martensitic transformation. In the first paper the concept of a transformation plasticity strain is introduced from a phenomenological point of view. READ MORE

4. 2. Micro-mechanical FE-simulations of the plastic behaviour of steels undergoing martensitic transformation

   Author : Kjell Simonsson; Sören Sjöström; Marcel Berveiller; Linköpings universitet; []
   Keywords : Steel; martensitic transformation; grain constitution; finite element simulations; plastic behaviour; transformation kinetics; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : This thesis is concerned with the mechanical behaviour of steels undergoing martensitic transformation. More specifically, the aim has been to develop a method to numerically stimulate the mean strain (or stress) response associated with a prescribed temperature and mean stress (or strain) variation. READ MORE

5. 3. Martensitic Transformation in Stainless Steels

   Author : Ye Tian; Peter Hedström; Annika Forsberg; David Porter; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : .... READ MORE

6. 4. Martensitic Transformation in High Carbon Steels - Martensite Tetragonality and Impact of Cooling Rate

   Author : Thomas Kohne; Annika Borgenstam; Peter Hedström; Jilt Sietsma; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High carbon steel; Martensitic transformation; Martensite tetragonality; Fatigue performance; Materials Science and Engineering; Teknisk materialvetenskap;

   Abstract : Case-hardened gears are an essential part of our every day life in their role of power transmission in cars and heavy-duty trucks. The increasing use of low pressure carburizing (LPC) for case-hardening in combination with high pressure gas quenching (HPGQ) for cooling opens new possibilities in the design of heat treatments for improved fatigue performance. READ MORE

7. 5. Martensitic Transformations in Steels : A 3D Phase-field Study

   Author : Hemantha Kumar Yeddu; John Ågren; Annika Borgenstam; Yunzhi Wang; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase-field method; Martensitic transformations; Plastic de formation; Multi-length scale modeling; Microstructure; Stress states; Steels;

   Abstract : Martensite is considered to be the backbone of the high strength of many commercial steels. Martensite is formed by a rapid diffusionless phase transformation, which has been the subject of extensive research studies for more than a century. READ MORE