ICM 12 - Karlsruhe - International Conference on the Mechanical Behavior of Materials

Welcome to the ICM12
Karlsruhe, Germany

Conference Center
May 10-14 2015

symposia

(A) Multiscale phenomena in plasticity *

Organizers:

Stefan SANDFELD
Universität Erlangen-Nürnberg (stefan.sandfeld@fau.de)

Shigenobu OGATA
Osaka University, Japan (ogata@me.es.osaka-u.ac.jp)

Katrin SCHULZ
KIT, Germany (katrin.schulz@kit.edu)

Abstract:

The resulting ‘macroscopic’ properties of bulk materials are generally strongly dependent on the underlying microstructure on different length- and timescales. For an effective modelling and accurate prediction it is therefore often critical to represent material behavior and the response of devices on all relevant length and time scales in a multiscale approach. The advantage is a significant increase in available information from nano to macro and much better computational performance. However, these methods come occasionally with the disadvantage of models of increased complexity (e.g. coupling and information exchange between different length and time scales).

In this symposium we bring together experts from the computational, experimental and theoretical communities to discuss – how multiscale material models in conjunction with experimental input can be used to model and predict the mechanical behavior of materials – how and which information can be efficiently and accurately transferred from one scale to the other how simulations can used to guide towards better experiment design – how ‘classical’ homogenization techniques relate to the multiscale modelling approach Phenomena of interest are among others: dislocations and point defects, stacking faults and grain boundaries, amorphous plasticity, phase transitions, diffusion and creep, corrosion and fatigue.

(B) Residual Stresses *

Organizers:

Prof. I. Cevdet Noyan
APAM Chair and Professor of Materials Science and Engineering and of Earth and Environmental Engineering Columbia University, N.Y., USA

Prof. Berthold Scholtes
Institute of Materials Engineering – Metallic Materials University of Kassel, Germany

Prof. Philip J. Withers
Professor of Materials Science – The University of Manchester, UK

Abstract:

Residual stresses are mechanical stresses existing in solid bodies when no external forces and/ or moments are present. They are unavoidable side effects of the formation of solid bodies and of the production and manufacturing of materials and technical components. Characteristic interactions exist between materials microstructures and residual stress fields across many length scales. Existing residual stress fields can have significant impact on performance, lifetime or functionality of the affected materials or components and can be both detrimental and beneficial. The study of residual stress issues involves many disciplines within science and engineering, with efforts covering academic research as well as practical applications. In this symposium all aspects of the formation, analysis and effects of residual stress states in materials and components will be explored. Both the scientific and the engineering issues of the field will be addressed. Contributions based on modeling and simulation, as well as on experimental methods are welcomed.

(C) Cyclic deformation behavior, crack initiation & crack growth of metals *

Organizers:

Prof. Dietmar Eifler and Prof. Tilmann Beck
University of Kaiserslautern
Institute of Materials Science and Engineering
P.O. Box 3049, 67653 Kaiserslautern, Germany

Prof. Masahiro Endo
Fukuoka University
Department of Mechanical Engineering
8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan

Abstract:

The symposium focuses on the fatigue behavior of metallic materials in a wide temperature range. In this context, contribution on both, cyclic deformation behavior and fatigue fracture are welcome. With this, the symposium features new results and advances in the fields of materials fatigue and life prediction in the LCF, HCF and VHCF regime. It brings together scientists and design engineers from all over the world to present their latest work on current issues in investigation, multiscale modeling and simulation of fatigue mechanisms, enhancement of fatigue strength and quantitative relationship between microstructure and fatigue properties, life prediction etc. This symposium provides a platform for fostering new ideas to describe and model fatigue processes including crack initiation and crack growth of metals based on microstructural features.

  • Fatigue property microstructure relationships, crack initiation and growth
  • Fundamentals and multiscale modeling of Fatigue
  • Fatigue property enhancement and life prediction
  • Advanced and emerging testing technologies

(D) In-situ microscopy and diffraction *

Organizers:

Christian Kübel
KNMF – Karlsruher Institute for Technology – Institute of Nanotechnology, Germany (Christian.Kuebel@kit.edu)

Crisitan Mocuta
Synchrotron SOLEIL, Gif-sur-Yvette, France
(cristian.mocuta@synchrotron-soleil.fr)

Julia N. Wagner
KNMF – Karlsruher Institute for Technology – Institute for Applied Materials, Germany (julia.wagner@kit.edu)

Abstract:

In order to understand the thermo-mechanical behaviour of materials and the underlying mechanisms in detail, a direct observation of the processes involved is necessary. This has generated major developments yielding to reliable and quantifiable results via in-situ methods for microscopy and diffraction over the last years. Besides mechanical in-situ testing, which on one hand evolved from uniaxial to multiaxial tests and on the other hand from the micron to the nano- and atomic scale, also thermal and electrical in-situ experiments progressed further.

The mini-symposium “in-situ microscopy and diffraction” is aimed to address recent progress in in-situ methods covering all aspects of TEM, SEM, neutron and synchrotron radiation based studies. The symposium will focus on thermo-mechanical properties of all material classes, e.g. metals, semiconductors, ferroelectrics and organic systems.

(E) Size effects and small-scale mechanical behavior of materials *

Organizers:

Ruth SCHWAIGER
KIT, Institute for Applied Materials (ruth.schwaiger@kit.edu)

Guang-Ping ZHANG
Shenyang National Laboratory for Materials Science, Institute of Metal Research (IMR), Chinese Academy of Sciences
(gpzhang@imr.ac.cn)

Abstract:

Deformation and failure mechanisms in materials become size-dependent when sample dimensions and/or microstructures approach the sub-micrometer regime. For example, the constraint on plastic deformation in thin metallic films or multilayers can lead to a tremendous increase in hardness or flow stress illustrating the trend “smaller is stronger” but also result in a transition from plastic flow to fracture. Strength values approaching the theoretical strength have been observed in nanopillars and nanowires and attributed to the absence of dislocation sources, while the breakdown of Hall-Petch behavior has been found in nanocrystalline materials at very small grain sizes with plastic deformation being dominated by the abundance of interfaces.
This symposium will focus on the interplay between microstructural and deformation length-scales with the goal to reveal the fundamental principles and deformation mechanisms leading to size effects in the mechanical behavior and failure of materials and structures. Experimental contributions but also closely related modeling papers of nanoscale mechanical deformation are encouraged. Specific topics of interest include, but are not limited to:

  • Mechanical phenomena in small-scale materials and structures, including thin films and multilayers, micro- and nanopillars, nanowires, nanocomposites and ultra-fine and nano crystalline materials
  • Microstructural evolution during deformation and deformation mechanisms
  • Size and length scale effects in the mechanical response of biological and bioinspired materials
  • Effects of nanoarchitecture on mechanical behavior and failure
  • Theory/simulation approaches to modeling size effects

(F) Advanced steels and steel composite materials *

Organizers:

Wolfgang Bleck
RWTH Aachen, Germany

Sybrand van der Zwaag
TU Delft, The Netherlands

Horst Biermann
TU Bergakademie Freiberg, Germany

Abstract:

Modern steels combine tailored properties in terms of application relevant properties such as e.g. strength, ductility, corrosion resistance, etc. They are based on multiphase microstructures with dimensions ranging from 1 nanometer to 100 micrometer in a single product which can weigh up to 100,000 kg. Solid state phase transformations are of crucial importance, even more so for the high TRIP, TWIP steels and Q&P steels and all highly alloyed engineering steels.
The symposium invites contributions dealing with design, processing, properties, testing and microstructure of novel steels as well as steel-based composite materials. Contributions on property-microstructure relationships as well as on the design of new steels and steel-matrix composites are welcome. The contributions can cover experimental as well as computational work.
The application of new steels and steel-based composites in all fields of industry, as cars, power generation and windmills will be highlighted as well.

(G) Fracture Mechanics *

Organizers:

Vadim Silberschmidt
Loughborough University, U.K. (v.silberschmidt@lboro.ac.uk)

Thomas Seelig
KIT, Germany (thomas.seelig@kit.edu)

Abstract:

Fracture of solid materials inevitably involves processes at very different length scales: from an atomic level via that of material-specific (natural or man-made) microstructures up to a specimen’s or component’s level, where loads are applied and macroscopic parameters, such as material’s “fracture toughness”, are defined. For instance, many materials developed for technical applications are microstructured to optimize their resistance to fracture. The character of loading and environment affects additionally realisation of fracture processes in solids.

This symposium aims to contribute to a deeper understanding of the interrelation between the microstructure of materials and their macroscopic fracture behaviour under various loading and environmental conditions, by bringing together related research in experimental testing, microstructural characterisation as well as theoretical and numerical studies. A special emphasis will be on spatio-temporal evolution of fracture processes, underpinning mechanisms and multi-scale approaches and schemes. Works on any materials – natural and artificial – are invited.

(H) Materials for Fission and Fusion *

Organizers:

Dr. Anton Möslang
KIT, Germany

Dr. Rick Kurtz
PNNL, USA

Prof. Akihiko Kimura
Kyoto University, Japan

Abstract:

Both, nuclear fission and fusion stand for carbon dioxide free, safe, cost-effective and sustainable nuclear energies. The global growth of both energy sources should proceed without adverse impacts to global environmental changes. Advances in materials technologies will play key roles not only in the further improvement of component performance, reliability and safety, but also in launching high temperature resistant and high burn-up materials that meet demanding requirements on cost-efficiency and resource economics.
This Symposium is dedicated to recent advances in science and technology of structural and functional materials of nuclear fission and fusion energy and is primarily focused on their mechanical properties. Of interest are advanced materials such as low activation or high-temperature alloys, super-alloys, composites, functional materials like ceramics and related coatings. Correlations between microstructure and properties, scientific understanding of irradiation damage, corrosion and aging as well as theoretical modeling of experiments are likewise welcome.

(I) High temperature materials *

Organizers:

Gunther Eggeler
Bochum, Germany

Easo P. George
Oak Ridge, USA

Abstract:

There is no doubt that worldwide effort to increase the efficiency and to extend the lifetime of energy conversion facilities largely depend on improved materials and manufacturing techniques. Materials in those new scenarios are supposed to exhibit outstanding mechanical strength and creep resistance at high temperatures as well as corrosion and oxidation resistance. This Symposium will present and discuss the current state of progress in development, manufacturing and behaviour of cast, wrought and powder-metallurgical high temperature materials. Besides state-of-the-art materials such as Superalloys, recent advances in pushing the temperature limits for all materials will be addressed with a particular emphasis on metal-based materials with temperature capability beyond that of Superalloys. Contributions to this symposium are sought for the following material systems (but not limited to):

  • Nickel- and Cobalt-based superalloys
  • Alloys based on intermetallic compounds such as aluminides, silicides etc.
  • Titanium alloys
  • Steels
  • Composites

(K) Polymer based composites *

Organizers:

Frank Henning & Thomas Böhlke
Karlsruhe, Germany

Abstract:

In order to successfully develop composite solutions a holistic understanding of materials, processes, design and simulation is required. The simulation based understanding of the correlation of both the microstructure and the micromechanical behavior on the one side, and the macroscopic mechanical composite behavior on the other side, is of fundamental interest for the design of polymer based composites, the optimization of production processes as well as the dimensioning and optimization of construction parts. The development of manufacturing process and suitable materials depending on the field of applications is a significant part of the composite design. Therefore, the symposium also focusses on new approaches for the material compounding, processing, modeling and the numerical simulation of composites.

(L) Lightweight alloys and structures *

(X) General Mechanical Behavior *


Supporting Organizations