Download Atomistic and Multiscale Material Modeling and Testing Within the

Atomistic and Multiscale Material Modeling and Testing
Within the large research project Arctic Materials we now explore why steel is
undergoing a transition from ductile to brittle behaviour in steel as the temperature is
decreased. The mechanism is complex and not fully understood and there is a great
need to understand the brittleness in order to avoid failures at low temperatures. Both
effective quantum mechanics informed interatomic potentials for iron and steel and
supercomputer capacities for parallel processing (Njord) are now available, and it is
possible to model the detailed materials failure mechanisms with a sufficient large
amount of atoms (millions). The calculations on the atomistic level can inform the
macroscopic properties through multiscale material models. In addition we apply
Focused Ion Beam at NTNU NanoLab to machine pillars and fracture specimens at
the nano level to obtain local mechanical properties. The specimens are tested by use
of a nanoindenter after the FIB machining.
In close cooperation with Statoil we invite students to perform their project work and
master thesis on these topics, and also encourage the students to apply for summer
jobs on the same topics to get familiar with the modelling and the testing facilities
(summer job info: [email protected]).
Supervisor:
professor Christian Thaulow. Dept Engineering Design and Materials.
[email protected]
Co-supervisors:
PhD students Christer H Ersland and Inga Ringdalen Vatne, Dept Engineering Design
and Materials
Industry contact:
Morten Karslsen, Statoil Forskningssenter, Rotvoll