ruslan z. valiev institute of physics of advanced materials ufa state aviation technical university,...
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Ruslan Z. VALIEV
Institute of Physics of Advanced Materials Ufa State Aviation Technical University, Ufa, Russia
The Nanocenter of the Academy of Sciences of the Republic Bashkortostan
Nanomaterials and nanotechnologies in the Republic of Nanomaterials and nanotechnologies in the Republic of Bashkortostan: science and innovation Bashkortostan: science and innovation
Modern types of nanomaterials
Atomic clusters and particles
Multilayers
Nanostructured surfaces
Объемные наноструктурные
материалы
Bulk nanostructured
materials
The size of the structural units – dozens of nanometers
Scientific reserve in the sphere of nanotechnologies in the Republic Bashkortostan
Nanostructured coatings (USATU)
Bionanomaterials(the Institute of biochemistry and genetics of RAS and others)
Nanotest of surfaces at nano level Bashkir State University, The Institute of Physics of Molecules and Crystalsof Ufa Scientific Centre of RAS)
Bulk nanostructured materials (USATU, Institute of Mechanics of RAS, Institute for Metals Superplasticity Problems of RAS)
Grain refinement in bulk metals by SPD processing
After ECAP Initial state
R.Z. Valiev, N.A. Krasilnikov, N.K. Tsenev: Mater. Sci. Eng. A 137 (1991) 35.
R.Z. Valiev, A.V. Korznikov, R.R. Mulyukov: Mater. Sci. Eng. A 186 (1993) 141.
Various SPD techniques for fabrication of bulk nanostructured materials
High-pressure torsion (HPT)
HPT die-set
Principles of Equal-channel angular pressing
(ECAP)
Combined SPD: ECAP + rolling -
ECAP produced specimens
produced semiproducts:produced semiproducts: billets, plates, rodsbillets, plates, rods
Stationary die
work Piece
Well
ECAP- Conform
General view of a continuous ECAP-Conform die-set equipped with a controlling
system and a roller holder
A view of the operating tool of a continuous ECAP die-set
a)a)
b)b)
Billets processed using the ECAP-Conform die-
set with a section of 7.1×7.3 mm:
(а) Cu (at room temperature);
(b) CP Ti (at 250°С)
Extraordinary strength and ductility of SPD-nanometals
0
200
400
600
800
Yie
ld S
tre
ng
th (
MP
a)
0 10 20 30 40 50 60
Elongation to failure (%)
nano Ti
nano Cu
00
11%
21%
37%
61%
35%75%
Yie
ld s
tre
ng
th (
MP
a)
Cu
Al
The extraordinary combination of both high strength and high ductility in nanostructured Cu and Ti processed by SPD clearly sets them apart from coarse-grained metals (marked as +), including Au, Be, Ca, Co, Fe, Hf, Mg, Mo, Nb, Ni, Pd, Pt, Re, Ru, Ta, Th, Ti, U, V, W, and Zr (all are 99.5% to 99.9% pure).
Valiev, Alexandrov, Zhu, Lowe, JMR, 2002
Low-temperature and high-strain-rate superplasticity of nanoSPD alloys
1421 alloy after SPD
Initial sample
after deformation
after traditional treatment
Initial state
after SPD processing (ECAP)
after SPD processing (ECAP)
after traditional treatment
100 m
50 m
200 nm
3 4 5 6 7 8 9 10
Tem
pera
ture
, 0C
0
100
200
300
400
500
3 4 5 6 7 8 9 10
Elon
gati
on,%
0
300
600
900
1200
1500
1800
3 4 5 6 7 8 9 10
Sra
in r
ate,
s-1
1e-4
1e-3
1e-2
1e-1
5 10 15 20 25 30 35
Sta
in r
ate
, s-1
1e-4
1e-3
1e-2
5 10 15 20 25 30 35
Tem
pera
ture
, 0C
0
100
200
300
400
500
290
800
1620
580
1550
1420 Al alloy (Al5.5Mg2.1Li0.1Zr)
1421 Al alloy (Al5.0Mg2.1Li0.11Zr0.2Sc)
Our developments:Nano-steels (joint project in collaboration with Bosch, Germany)
Nano-Al-alloys
Нigh-strength nanostructural copper alloys for high-speed railway catenary(Research Institute of Russian Railways;Wieland Electric Inc., Germany)
Innovation potential of BNM
The innovation probability in various sectors vs. specific strength (UTS/ ρ).The highest potential might be seen in applications and products under extreme environments and/or with extreme specific strength’ requirements. Adv.Eng.Mater., 2007
And as you can see from the download statistics in Table 2, two review papers of this special issue, although just published in December, already made it into the Top-10 of all papers published in 2007 – a clear sign that this topic is of high interest to the scientific community.”
Jorn Ritterbusch, Adv. Eng. Mater. 2008, 10, No. 1-2, Editorial
Mechanical properties of NC Ti Grade 4 :
•YS 1130 MPa (conventional – 450 MPa)•UTS 1250 MPa 10 %
Typical rod size Nano-Ti: 6 – 12 mm in diameter, 3 m in length
Nanostructured Ti Semi-Products for Medical Applications
Left - Nanoimplant® - a new implant 2.4 mm made of Nano Ti produced in Ufa,
right - Timplant® classical implant 3.5 mm
R. Valiev et al., AEM 2008
Nanostructured Ti has the following advantages:• can reduce weight of implanted structures due to
improved mechanical properties; • superior biological compatibility; • allows to develop advanced implant designs.
Examples of pilot articles from Ti nanomaterials
Nanostructured CP Ti used for spine functions recovery
Plate implants and instruments for tubular bone osteosynthesis
1738 citations by June 17, 2009 #1 all-time most cited paper in
Prog. Mater. Sci.
Institute of material science in University of Erlangen-Nurnberg
Chemnitz Technical University
IPAM USATU
Technical University of Clausthal
Scientific links of IPAM USATU with German research centers
Stuttgart University
Ulm University
Max Planck Institute
for Metals Research
Institute of Nanotechnology in Karlsruhe Research center
Bosch
Cooperation via Alexander von Humboldt-Stiftung Prof. Valiev R.Z. was granted the prestigious scientific Humboldt Foundation Research Award
(Germany) in 2001 for outstanding scientific research in the field of bulk nanostructured material. This allowed establishing close and productive scientific cooperation of the Institute and with a number of German research centers, such as : Institute of materials science in the University of Erlangen-Nurnberg Institute of Nanotechnology in the Karlsruhe Research center Institute of theoretical and applied physics in Stuttgart University
The cooperation has been continued in 2007-2008.
A post-graduate student from IPAM USATU L.R.Saitova is studying in the Institute of Materials Science in the University of Erlangen-Nurnberg (Erlangen).
A junior researcher from IPAM USATU Kilmametov A.R. was working as invited fellow in the Institute of Nanotechnology in Karlsruhe Research center.
Scholarship in Germany
1st International Symposium onBULK NANOSTRUCTURED MATERIALS
BNM-2007BNM-2007Ufa, Russia 2007Ufa, Russia 2007
Ufa, RussiaSeptember 22-26, 2009
Institute of Physics of Advanced MaterialsUfa State Aviation Technical University
12 K. Marx St., Ufa 450000, RussiaTel/fax: +7 (347) 2733422
2nd International Symposium on
BULK NANOSTRUCTURED MATERIALS
BNM2009 ttp://www.nanospd.ru/bnm-2009/
E-mail: [email protected]
STRUCTURE OF THE SYMPOSIUMThe proposed symposium will cover the following topics:
Processing of Bulk NanomaterialsStructural Characterization Physical and Mechanical Properties Innovation Trends in NanomaterialsCommercialization of NanomaterialsModeling of NanomaterialsSpecial Session for Young Scientists
LANGUAGE English.PRELIMINARY LIST OF KEYNOTE SPEAKERSY. Estrin, Germany X. Sauvage, FranceZ. Horita, JapanJ. Zrnik, Czech Republic G. Wilde, GermanyB.B. Straumal, RussiaH.S. Kim, South Korea T.C. Lowe, USAT. Ungar, HungaryS.V. Dobatkin, Russia J. Wang, P.R. ChinaM.J. Zehetbauer, AustriaY.T. Zhu, USA
and others.
Nano Congress 2009
Automatic equipment for investigation of mechanical properties of nanostructured materials, developed and produced in IPAM USATU, was purchased by Institute of Nanotechnology in Karlsruhe Research center (Germany).
Supply of research equipment