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EBSD study of variant reorientation, texture, and twin formation in a martensitic NiTi alloy deformed in compression

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Passive damping of composites with embedded shape memory alloy wires

Véronique Michaud, Antoine Sigg, Enrico Bigi

NiTi alloy wires were embedded during the infusion processing of woven carbon fibre reinforced plastic (CFRP) composite plates with the purpose to passively increase their damping. Two types of NiTi wires, having the same diameter of 203 mu m, were conside ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

In-situ Laue diffraction on deforming micropillars

Single crystal deformation unveiling the characteristics of crystal glide and the role of defect propagation herein has been a matter of intense research more than 60 years ago. A manifold of different mechanical testing methods and crystal qualities were ...

EPFL2009

Off-axis texture in nanostructured Ti1-xAlxN thin films

Alireza Karimi

Standard theta-2 theta and pole figure X-ray diffraction techniques were used to study structural properties and preferred orientation of nanostructured TiAIN thin films prepared using cathodic are deposition. Systematic collection of reflections from latt ...

R Deposition2008

Shape memory alloys for microsystems: A review from a material research perspective

Yves Bellouard

One important challenge of microsystems design is the implementation of miniaturized actuation principles efficient at the micro-scale. Shape memory alloys (SMAs) have early on been considered as a potential solution to this problem as these materials offe ...

Elsevier2008

2008

Al-Zn-Si alloy coatings are widely used for the corrosion protection of steel sheets. In addition to the favorable corrosion properties, the Al-43wt%Zn-1.6wt%Si coatings present several features which are of metallurgical interest. The first one is their s ...

EPFL2007

Grain interactions in crystal plasticity

William Curtin

The plastic response of a sheet metal is governed by the collective response of the underlying grains. Intragranular plasticity depends on intrinsic variables such as crystallographic orientation and on extrinsic variables such as grain interactions; howev ...

Amer Inst Physics2005

Measurement of In-Grain Orientation Gradients by EBSD and Comparison with Finite Element Results

Roland Logé

The characterization of In-grain orientation gradients by electron backscattering diffraction (EBSD) technique was studied. The study, based on finite element (FE) technique, involved the simulation of plane strain compression of the crystal grains. In reg ...

2003

Sensitivity of α-ZY4 high-temperature deformation textures to the β-quenched precipitate structure and to recrystallization: Application to hot extrusion

Roland Logé

Hot extrusion of Zircaloy-4 tubes usually starts from β-quenched microstructures and induces strong textures. Individual crystallographic orientations were investigated by transmission electron microscopy using the electron backscatter pattern (EBSP) techn ...

2000