Laboratory for Physics of High-Strength Crystals
1 Novosobornaya Sq.,
Tomsk, 634050, Russia
Phone: (+7) 3822533209
Areas of Research
- Development of the theory of thermoelastic martensitic transformations in high-strength and high-temperature nanocomposites for the construction of new shape memory alloys based on FeNiCoAl single crystals alloyed with the fifth element: Ta, Nb, Ti, B, that demonstrate the shape memory up to 8 % and superelasticity up to 14 %.
- Production and investigation of new ferromagnetic CoNiGa, CoNiAl, NiFeGa(Co) single crystals with high-temperature superelasticity up to 400° C with controlled mechanical and thermal hysteresis, and magnetic shape-memory.
- Design of new nanocomposite intermetallic compounds based on TiNiHf and TiNiHfPd single crystals with high-temperature superelasticity in a temperature range from 30° C to 240º C at extremely high stress levels up to 2.4 GPa with high energy dissipation.
- Investigation of the effect of hydrogen on thermoelastic martensitic transformations, shape memory effect and superelasticity in TiNi-based and iron-based single crystals.
- Fundamental physics research of thermoelastic phase transformations in these single crystals upon cooling / heating, under load and under the influence of magnetic field.
Partners
- Texas A&M University (College Station, USA);
- University of Illinois (Urbana-Champaign, USA);
- University of Kentucky (Lexington, USA);
- Leibniz Universität (Hannover, Germany);
- Universitat de les Illes Balears (Palma de Mallorca, Spain).
- Universität Kassel (Kassel, Germany)
- Tohoku University (Sendai, Japan)
- Ruhr-Universität (Bochum, Germany)
- Colorado School of Mines (Golden, USA)
- National Institute for Materials Science (Tsukuba, Japan)
- University of Debrecen (Debrecen, Hungary)
Services
Growth of single crystals with melting point of up to 1600° C: Ti-Ni, Co-Na-Ga, Co-Ni-Al, Ni-Fe-Ga and austenitic stainless steels, intermetallic Ni3Al. Orientation of crystals and production of research samples. Mechanical tests on tensile and compression, on cyclic fatigue and in a temperature range from -196° C to 300° C, investigation of shape memory effect and of superelasticity in a temperature range from -196° C to 350° C.
Equipment
1. Units for single crystal growth. Units for growing single crystals of various alloys using different crucibles under the Bridgman method in an inert gas atmosphere.
2. ARTA 153 Electrical Discharge Machines. These machines allow high accuracy and processing capacity when cutting samples, and are required for the preparation of single-crystal samples in a complete technological chain cycle: single-crystal growth – orientation – cutting samples.
3. Units for mechanical tensile–and–compression tests:
3.1. Instron 5569 Load Frame with a heat chamber. The device is used for the mechanical test in a temperature range of 203 K ÷ 623 K and at various loading methods: tension / compression in air.
3.2. Modified Polanyi Machine. It is used for tensile–and–compression tests in a temperature range from 77 K to 523 K in water, ethanol and liquid nitrogen.
3.3. Unit equipped with vacuum heat chamber. It is used for mechanical tensile–and–compression tests at temperatures above 363 K to 873 K in a vacuum better than 10-2 Pa.
4. Units for measuring shape memory effect under load:
5. ElectroPuls E3000 Electrodynamic Testing System. It is used for both dynamic and static tests of materials and components. The dynamic load capacity is ± 3000 N, the long-term static load capacity is ± 2100 N.4.1. Unit for studying shape memory effect under a tensile or compressive load in the cooling / heating cycle at a temperature of 77 K to 393 K in air using liquid nitrogen.
4.2. Unit for studying shape memory effect in a magnetic field. It is used for mechanical load test in cooling / heating at various ways of loading and in the applied magnetic field.
6. DSC 404 F3 High-Temperature Calorimeter. The device can measure temperature in the range of -150° C to 1000° C. It is used for studying thermal effects of reactions: identification of thermal effect temperature; analysis of peak areas (enthalpies) with selectable and derivative baseline; determining the degree of structure crystallinity, oxidation induction time, specific heat capacity.
7. DMA/SDTA861 Dynamic Mechanical Analyzer. It is used for research of dependencies of mechanical and viscoelastic properties of crystals on the temperature, time and frequency of periodic loads.
8. Keyence VHX-2000 Universal Digital Measuring Microscope. In the range of its microscopic magnification, the microscope allows observing from stereoscopic images in the macro-scale throughout to a detailed analysis of the scanning electronic microscope with support of various displaying techniques, including observation using transmitted lightand polarized light, and differential interference.
9. Dron-3 X-ray Diffractometer .It is a multi-purpose X-ray diffractometer with a control and registration system on the basis of IBM PC. The diffractometer is used to determine the precise orientation of crystals, for phase of analysis and double trace analysis.
10. TenuPol-5. It is a device for automatic electrolytic thinning of specimens for transmission electron microscopy with a built-in scan function of the process parameters and a possibility of installing additional options for new materials.
11. Electric Resistance Temperature Detector. Upon cooling / heating in a temperature range from 77 K to 393 K in air using liquid nitrogen and a thermal cell, the device allows determining the electrical resistivity change of test samples.
12. High Temperature Annealing Furnaces (up to 1300° C). They are designed for thermal treatment of materials in a wide range of temperatures.
Centre of Excellence
Smart Materials and TechnologiesQS subject
- Mechanical, Aeronautical & Manufacturing Engineering
- Materials Sciences
