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| Home>Research>MC2-Crystalline Materials under Stress>Videos | ||||||||||||||
Groupe Matériaux Cristallins sous Contrainte "MC2"
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| Shape memory alloys |
Reversible austenite-martensite interface motion in AlCuNi
shape memory alloy. |
Reversible nucleations and disappearings of a martensite
phase on a dislocation in CuAlNi shape memory alloy. |
Reversible martensitic phase transformation in an AlCuNi
shape memory alloy. |
Martensitic phase transformation under stress in an CuAlNi
shape memory alloy. |
| NiAl |
<001> dislocation motions in NiAl at 20°C,
and loop nucleations by cross-slip, in x. |
| L12 alloys |
Dislocation motion in a cubic plane of the gamma prime
phase of a superalloy, at 170K. |
Superdislocation motion by "APB jumps" in Ni3Al at 20°C.  |
| GaAs |
Dislocation source in GaAs, at 350°C.
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| Quasi-cristals |
Dislocation annihilation by climb in Al-Pd-Mn quasicrystal
at 700°C. |
Dislocation multiplication by climb in Al-Pd-Mn quasicrystal
at 720°C. |
| Ti3Al |
| A type dislocations gliding in the basal plane of Ti3Al
and cross-slipping into a prismatic plane, 200°C. |
| A type dislocations initially gliding
in the basal plane of Ti3Al and cross-slipping in the prismatic
plane, 25°, 200°C. |
| Gliding in the pyramidal planeof
Ti3Alat 25, 200°C. |
Crack-tip
emission of 2c+a dislocations in pyramidal planes of Ti3Al
at |
Surface diffusion and interdiffusion of monoatomic layers
of Pb and Bi on Cu(100) at 513 K. |
| TiAl |
TiAl-DSA. |
TiAl-macl. |
TiAl-ordin. |
TiALModes. |
| FeAl |
Motion and multiplication of dislocations in the intermetallic
alloy Fe70Al30, at room temperature. |
Burst of dislocation motions in the intermetallic alloy
Fe70Al30, at 380°C (650K). |
FeAl-DSA. |
| Mg, Be |
Jerky motion of screw dislocations, in prismatic planes
of magnesium at -120°C (150K). |
Steady motion of screw dislocations, in the prismatic
planes of magnesium at room temperature. |
Jerky motion of screw dislocations, in prismatic planes
of beryllium at room temperature. |
| Superalloy |
annihilation-disloc. |
fluctuationsSRO-phasegamma. |
pile-up-350. |
pile-up_accfois2. |
superalloy_part1. |
superalloy_part2. |
| Ti |
Ti(HP)300K. |
Ti(HP)source155K. |
| Ta6V – 25°C |
Propagation de paires de dislocations dans les nodules
alpha primaires |
Propagation de dislocations dans les colonies lamellaires |
Naissance d’une dislcocation au niveau d’une
interface alpha secondaire/ beta |
Propagation de dislocations rectilignes dans une lamelle
alpha secondaire |
Emission d’une dislocation au niveau d’une
interface alpha secondaire/ beta |
Propagation de dislocations dans un échantillon
traité en surface par une procédé de nitruration |
| Stress assisted grain growth |
Croissance assistée par la contrainte d’un
grain nanocristallin d’aluminium dans un film mince autoportée |
Expérience de traction in situ montrant des mouvements
de joints sous contrainte à 400°C dans
l’aluminium ultrafin |
| Thin layer |
Source de dislocation dans un film de cuivre sur un substrat
de sapphire en fin de cycle de relaxation |
Mouvement rapide de joint de grain dans un film d’aluminium
sur silicium à 200°C. |
| ZnSe |
annex1. |
Annex1_ZnSe-GaAs_degradation[MSB_10396]. |
annex2. |
Annex2_ZnSe-GaAs_degradation[MSB_10396]. |
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