Deformation mechanisms of in-situ composite materials
Project goals
We would like to take advantage of highly regular and stable microstructure of advanced in-situ composites and use them as model systems to investigate basic (high temperature) deformation mechanisms in two phase solids. Attention will be given mainly to(i) a size effect the (sub)micron sized reinforcement may have on the overall strength of the composite, (ii) the dislocation level understanding of stress redistribution (transfer) from the ductile matrix towards stiffer fibres, (iii) the role of interface phenomena (sliding, dislocation transfer and diffusion controlled recovery) on the composite strength and (iv) the mechanisms of fibre fragmentation due to high temperature exposures. Were the project granted, we may expect the following results: (i) new experimental data on the strength of in-situ composites tested in the CP, CN and TP mode, (ii) new experimental data relating the size and distribution of reinforcement and the high temperature composite strength and (iii) new TEM evidence on the (dislocation) mechanisms of stress redistribution between composite constituents.
Keywords
in-situ kompozitdislokaceredistribuce napětívelikostní efekt
Public support
Provider
Czech Science Foundation
Programme
Standard projects
Call for proposals
Standardní projekty 12 (SGA02009GA-ST)
Main participants
—
Contest type
VS - Public tender
Contract ID
202/09/2073
Alternative language
Project name in Czech
Deformační mechanismy in-situ kompozitních materiálů
Annotation in Czech
1) Creepovými testy získat data o vysokoteplotní pevnosti in-situ kompozitu při namáhání CP, CN a TP. 2) Nalézt a vysvětlit vztah mezi velikostními parametry výztuže a vysokoteplotní pevností kompozitu. 3) Objasnit (dislokační) mechanismus redistribuce napětí mezi složkami in-situ kompozitu.
Scientific branches
R&D category
ZV - Basic research
CEP classification - main branch
BM - Solid-state physics and magnetism
CEP - secondary branch
JI - Composite materials
CEP - another secondary branch
JJ - Other materials
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
20502 - Paper and wood
20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
21001 - Nano-materials (production and properties)
21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)
Completed project evaluation
Provider evaluation
U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)
Project results evaluation
The project gone according to plan both in terms of expertise and in terms of disbursement of funds.
Solution timeline
Realization period - beginning
Jan 1, 2009
Realization period - end
Dec 31, 2011
Project status
U - Finished project
Latest support payment
Apr 16, 2011
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP12-GA0-GA-U/02:2
Data delivery date
May 2, 2016
Finance
Total approved costs
1,950 thou. CZK
Public financial support
1,950 thou. CZK
Other public sources
0 thou. CZK
Non public and foreign sources
0 thou. CZK
Recognised costs
1 950 CZK thou.
Public support
1 950 CZK thou.
0%
Provider
Czech Science Foundation
CEP
BM - Solid-state physics and magnetism
Solution period
01. 01. 2009 - 31. 12. 2011