100% Positive Material Identification

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Poster Session Scholars at TITANIUM EUROPE 2016 (continued) Maxim Khatsayuk, Siberian Federal University, Krasnoyarsk Krai, Russia. In 2013 Khatsayuk defended a thesis of candidate of sciences: “Induction Unit with a Magneto-Hydrodynamic Effects During Preparing and Casting Alloys.” Khatsayuk has 59 published works, three patents, and four software certificates. Khatsayuk currently is engaged in the research and development of a new method for producing the liquid phase of titanium in an electromagnetic field, which will form the basis for his doctoral dissertation. His advisor is Professor V. Demidovich. Abstract: The unique opportunity of the obtaining of the liquid phase of titanium alloy inside the cylindrical ingots during the induction heating gives the prospects to develop fundamentally new titanium alloys non-vacuum casting technology. Such a technology is very competitive and energy efficient in comparison to the existing induction melting technology in a cold crucible. It is because of the fact that, during the process of melting, no additional equipment for vacuum is required. Furthermore, the process of the obtaining of the liquid titanium inside the ingot by the induction method requires a lot less time and energy consumption. Piotr Wieciński, Ph.D. Eng. has scientific experience in characterization of the microstructure, mechanical and tribological properties of the surface layers and coatings obtained by surface engineering methods. He is mostly focused on advanced characterization techniques like focus ion beam, scanning electron microscopy, scanning transmission electron microscopy, nanoindentation. Piotr Kwaśniak, M.Sc. Eng. conducts research on mechanical properties prediction through ab initio modelling. He is especially focused on titanium and its hexagonal alloys containing substitutional and/or interstitial elements. 38 TITANIUMTODAY He develops the knowledge about the structure and properties of planar and linear crystal defects in the above systems. Jerzy Smolik, Ph.D., D.Sc. Eng. is a manager of the Surface Engineering Department at Institute for Sustainable Technologies - National Research Institute in Radom. He has experience in applying wide range of surface engineering techniques to improve properties of construction parts and tools. Abstract: Progress in Properties Improvement of Titanium and its Alloys One of the goals of our works is improvement of the strength of titanium using severe plastic deformation (SPD) method. Refinement of grain size below 90 nm in titanium grade 2 increases its strength above 1000 MPa, which is close to Ti6Al4V alloy. Nanostructure has a positive influence also on the corrosion properties of titanium in physiological saline (0,9% NaCl). A large number of grain boundaries in nanotitanium promote a rapid formation of homogenous protective passive layer which was evidenced in our work. A combination of good mechanical properties and corrosion resistance in the body fluid indicate that nanocrystalline titanium has a large potential in biomedical applications. Nowadays, our work is focused on methods for improvement of titanium biocompatibility. For example, the most promising method of surface modification of bone implants is mimicking the bone hierarchical surface structure after remodelling process. In order to modify titanium, hybrid method consisting of shot peening, acid etching treatment and laser interference lithography was proposed. Our results evidenced that the appropriate choice of the parameters of such treatment allows to form hierarchical roughness (in a wide range of length scale from nano- to micrometers). Furthermore, laser treatment forms texture favourable for osteogenic passes of the stem cells, which can have a positive impact on the osseointegration process. Another area of our work is improving the tribological properties of Ti6Al4V alloy, which are insufficient for many industrial applications, by deposition of multilayered coatings using PVD method. Depending on the mechanism of wear, different kinds of multilayer coatings ensure the highest improvement of tribological properties. For example, Cr/CrN multilayer coatings exhibit excellent anti-erosion properties on Ti6Al4V alloy. Moreover, STEM observations evidenced that Cr layers accommodate plastic strain induced by erosion particles while interfaces between layers effectively block crack propagation. These phenomena decrease the number of cracks and ensure structure integrity of the coating during erosion. On the other hand the measurement of wear resistance during pin on disc test reveals the highest improvement of the tribilogical properties for the TiN/CrN coatings. Our results evidenced that not only the phase composition, but also the number and thickness of layers can influence the properties or even change the mechanism of failure. Titanium and its alloys with outstanding strength-to-density ratio are potentially prime elements for new constructional alloys to reduce the weight and energy consumption in all transport sectors. In our group mechanical properties of Ti and its hexagonal alloys are successfully predicted utilizing ab initio modeling methods. The calculations methodology includes electronic and atomic structure characterizations of binary (α-Ti+O) and selected ternary systems comprised of substitutional and interstitial alloying elements. Mechanical properties evaluation covers single and polycrystalline elastic constant, plasticity criteria as well as generalized stacking fault energy calculations. The achieved results provide insight into the physics of solute-solute element interactions, dislocation nucleation or dissociation mechanisms and atomic configuration of compact (point defects, dislocation cores) or extended (stacking fault, twins) defects. •
INTERNET APPLICATIONS > Executive Dashboard > Customer Self-Service (now with iPad) > Integrated CRM (now with iPad) POWERFUL INVENTORY CONTROL > On-Line Plate Diagrams > Imperial and Metric Functions > Random & Mill Length Control > Customer Bought For Stock Control > Integrated Mill Test Certificate Imaging > Alloy & Surcharges for Purchasing & Sales PURCHASING & INVENTORY MANAGEMENT > Purchase Orders with multiple destinations > Corporate, Regional or Warehouse Replenishment > Vendor Pricing Tables Multi-Divisional Organizational Structure Multi-Step & Multi-Warehouse Order Fulfillment Tightly Integrated Outside Processing 7/24 Operations & Full Disaster Recovery International Features & Multi-Language Functionality Advanced Technology & Scalability to 1000’s of Users 25 + Years of Metal Industry Experience 100 + Employees Dedicated to your Business Installed in 17 countries SALES PRODUCTIVITY & INVENTORY MANAGEMENT > Sawing, Burning, and Drilling Price Tables > Price Violation Hold & Release Function > Standard Customer Part Specification > Value-Added Processing & Profitability > Inter Company Order Fulfillment > Multi Company Consolidated Stock Inquiry MULTI-STEP ORDER FULFILLMENT > Multi-Step Processing > Standard Process Routing > Multi-Warehouse Order Fulfillment > Tightly Integrated Outside Processing > Source one order from multiple warehouses PRODUCTION > On-Line Production Planning > Multiple Orders on one Job > Slitting & Cut-to-length Layouts > Planned Drops > Cut & Paste On-Line Scheduling > Shop Floor Production Recording > Multi Strand Blanking & Oscillate Winding WiFi - Wireless PDA + iPhone/iTouch > Location Changes > Physical Inventory Count Entry > Picking Recording > Load Verification SHIPPING > On-Line Shipment Planning > On-Line Warehouse Transfer Planning INTEGRATED FINANCIALS > Integrated AR, AP, GL > Third-Party Financial Product Integration 514.925.8558 info@invera.com www.invera.com TECHNOLOGY > Integrated Work Flow > Disaster Recovery > Data Conversion Utilities
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Page 12: Understanding Implants in Knee and
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