J. Millán
Max Planck Society
Acta Materialia | 2011
O. Dmitrieva; Dirk Ponge; Gerhard Inden; J. Millán; Pyuck-Pa Choi; Jilt Sietsma; Dierk Raabe
Partitioning at phase boundaries of complex steels is important for their properties. We present atom probe tomography results across martensite/austenite interfaces in a precipitation-hardened maraging-TRIP steel (12.2 Mn, 1.9 Ni, 0.6 Mo, 1.2 Ti, 0.3 Al; at.%). The system reveals compositional changes at the phase boundaries: Mn and Ni are enriched while Ti, Al, Mo and Fe are depleted. More specific, we observe up to 27 at.% Mn in a 20 nm layer at the phase boundary. This is explained by the large difference in diffusivity between martensite and austenite. The high diffusivity in martensite leads to a Mn flux towards the retained austenite. The low diffusivity in the austenite does not allow accommodation of this flux. Consequently, the austenite grows with a Mn composition given by local equilibrium. The interpretation is based on DICTRA and mixed-mode diffusion calculations (using a finite interface mobility).
Acta Materialia | 2013
Dierk Raabe; Stefanie Sandlöbes; J. Millán; Dirk Ponge; Hamid Assadi; Michael Herbig; Pyuck-Pa Choi
Acta Materialia | 2014
J. Millán; Stefanie Sandlöbes; Ali Al-Zubi; Tilmann Hickel; Pyuck-Pa Choi; Jörg Neugebauer; Dirk Ponge; Dierk Raabe
Steel Research International | 2011
J. Millán; Dirk Ponge; Dierk Raabe; Pyuck-Pa Choi; O. Dmitrieva
Microstructural Design of Advanced Engineering Materials | 2013
Dierk Raabe; Dirk Ponge; R. Kirchheim; Hamid Assadi; Yujiao Li; S. Goto; Aleksander Kostka; Michael Herbig; Stefanie Sandlöbes; Margarita Kuzmina; J. Millán; Pyuck-Pa Choi
Workshop "Recent Progress in Plasticity and Phase Transformations" | 2015
Margarita Kuzmina; Michael Herbig; Dirk Ponge; O. Dmitrieva; J. Millán; Cemal Cem Tasan; Meimei Wang; Lutz Morsdorf; Stefanie Sandlöbes; Dierk Raabe
Workshop on 'Current Challenges in Materials Physics' at Physics Faculty, University Göttingen | 2013
J. Millán; Dirk Ponge; L. Yuan; Stefanie Sandlöbes; Shoji Goto; Yujiao Li; Pyuck-Pa Choi; Stefan Zaefferer; Gholamali Ali Nematollahi; Michael Herbig; R. Kirchheim; Gerhard Inden; Jörg Neugebauer; Dierk Raabe
Royal Society International Seminar, Superalloys to Order' at the Kavli Royal Society International Centre | 2013
J. Millán; Dirk Ponge; Ivan Povstugar; Stefanie Sandlöbes; Pyuck-Pa Choi; Stefan Zaefferer; Seyed Masood Hafez Haghighat; G. Eggeler; Gholamali Ali Nematollahi; Michael Herbig; R. Kirchheim; Gerhard Inden; Jörg Neugebauer; Dierk Raabe
International Colloquium on Advanced Materials Simulation, Interdisciplinary Centre for Advanced Materials Simulation (ICAMS) | 2013
J. Millán; Dirk Ponge; L. Yuan; Stefanie Sandlöbes; Shoji Goto; Yujiao Li; Pyuck-Pa Choi; Stefan Zaefferer; Gholamali Ali Nematollahi; Michael Herbig; R. Kirchheim; Gerhard Inden; Jörg Neugebauer; Dierk Raabe
DPG Spring Meeting 2013 | 2013
Dirk Ponge; J. Millán; Stefanie Sandlöbes; Pyuck-Pa Choi; Tilmann Hickel; R. Kirchheim; Jörg Neugebauer; Dierk Raabe
