The influence of the average grain size on the mechanical properties of metals is usually described by the Hall-Patch relationship (H-P), which has been experimentally proved for a wide range of grain sizes. It has been postulated in the past, that the flow stress of polycrystalline metals depends also on the diversity of the grain size. This effect is of particular importance when the grain size is reduced to the nanometric level. In the present study finite element model has been developed which explains the effect of the grain size diversity in quantitative way. The results of computations are compared with the experimental data for nano-aluminium.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/18777 must be provided.

1. Financing of industry relevant projects in Poland
2. Electrospun nanocomposites from PHBV for bone tissue engineering
3. Nanotechnologie w gospodarce województwa podlaskiego
4. Modeling of growth kinetics of SiC single crystal in PVT process
5. Application of micro- and nanostructured biomaterials in regenerative medicine
6. Core-shell P(LLA-CL) based electrospun nanofibers for peripheral nerve tissue engineering
7. Surface modification of PCL scaffold changes protein adsorption
8. TiO₂ nanotubes based composite layers for biomedical applications
9. Modification of epoxy resin properties by adding multi wall carbon nanotubes
10. Możliwości badawcze Laboratorium Skaningowej Mikroskopii Elektronowej na WIM PW
11. Otwarcie konferencji
12. Perspektywy rozwoju nanomateriałów konstrukcyjnych i funkcjonalnych
13. Zastosowania mikroskopii AFM dla farmacji i medycyny
14. Wykorzystanie nanotechnologii w procesie odlewania precyzyjnego
15. Oczyszczanie i modyfikacja nanomateriałów węglowych
16. Modyfikacje polimerów stosowanych w lotnictwie za pomocą nanorurek węglowych
17. Luminescent polyurethane nanocomposites: processing, structure and properties
18. Micro Sensor for cell force measurement
19. Preliminary studies on degradation of polylactides fibers
20. Effect of grain size on reactive diffusion between Ti-Al
21. TEM investigations of the nanostructure, multilayer CrN/Cr coatings obtained by vacuum-arc method
22. Bulk  nanostructured  titanium  fabricated  by  hydrostatic  extrusion
23. Composites PLLA/MWNTs produced by twin-screw microcompounder
24. Polyurethane-based material with calcite and aragonite for tissue engineering composite scaffolds
25.  A  degradable and highly porous polyurethane scaffolds for bone tissue engineering
26. Reduced activation ODS ferritic steel – recent development in high speed hot extrusion processing
27. Investigation of the DLC and novel DLC-polymer hybrid coatings using FIB and SEM techniques
28. A combination of microCT and FEM methods for development of a new scaffold for bone regeneration
29. Properties of transparent elastomer nanocomposites (polyurethane/ ZrO₂:Eu³⁺) as materials for optoelectronic application
30. Investigation of fatique crack growth rate of Al 5484 ultrafine grained alloy after ECAP process
31. Fire retardant polyurethane elastomers/aluminophosphorate nanocomposites for higher temperature application
32. The influence of grain refinement on the corrosion mechanism of 7475 aluminium alloy
33. Hybrid functional applied to the study of properties of narrow and wide band gap semiconductors
34. Recrystallization and Grain Growth in Nano-structured Austenitic Stainless Steel under Electric Current Heating
35. Effect of deformation and strain rate on diminishing of microstructure of aluminium alloys (AlCu4Zr0.5 and AlZn6Mg3CuZr)
36. Grain refinement in CuCrZr by SPD processing
37. Tailoring mechanical properties of nano-structured Eurofer 97 steel for fusion applications
38. Microscopic and surface analytical characterization of TiO₂ nanotubes produced by anodic oxidation and thermal treatment 
39. Investigation of cells interactions with textile scaffolds for bone tissue enginnering
40. Culture of osteoblasts on nanostructured titanium – preliminary observation
41. Electrospun polymeric fibers for cartilage regeneration
42. Biodegradable and bioabsorbable polymeric - ceramic composites for medical applications
43. Modelling of plastic deformation of nano-polycrystalline materials
44. Preliminary examinations of mechanical properties of DLC and novel DLC-polymer hybrid coatings for resurfacing hip prostheses
45. Optimization of the polymeric scaffolds for bone tissue engineering fabricated by rapid prototyping method
46. Bone tissue engineered product based on human bone derived cells and polyurethane scaffold
47. Molecular statics simulation of nanoindentation on nanocrystalline copper
48. Microstructural and mechanical characterization of zirconia based composite
49. Modeling of order-disorder phase transition in intermetallic compounds
50. Optimization of polyurethane structure as the potential materials for bone tissue engineering applications
51. Fabricationg polyurethane/calcium carbonate composite scaffold for bone tissue engineering
52. Polyurethane nano-composites with luminescence properties for optics and optoelectronics applications.
53. Tailoring mechanical properties by grain refinement and particle redistribution
54. Stochastic Approach To The Changes In The Mechanical Properties Of Nano-Crystalline Materials Induced By Grain Growth
55. Surface effect on atomic ordering in nano-layered L1₀ AB binaries: multiscale Monte Carlo Simulation
56. Characterization of nanopowders
57. Microstructure and mechanical properties of HE-treated titanium depending on its initial state
58. Influence of hydrostatic extrusion parameters on the microstructure and mechanical properties of 6082 aluminium alloy
59. The effect of grain size distribution on mechanical properties of nanometals
60. Morphological and surface analytical characterization of chemically pretreated Ti surfaces intended for biomedical applications
61. Electron microscopy studies of magnesium hydride
62. Microstructure and mechanical properties of 7475 aluminium alloy processed by SPD methods
63. Investigation of aqueous surface processes and corrosion mechanisms of Al-(Cu)-Fe-Cr quasicrystaline approximant
64. Characterization of the effects of hydrostatic extrusion on structure and surface properties of 303 austenitic stainless steel
65. The Effect of Hydrostatic Extrusion on the Corrosion Stability of Austenitic Stainless Steels
66. The Effect of Hydrostatic Extrusion on Resistance of 316 Austenitic Stainless Steel to Pit Nucleation
67. Nanomaterials in dental applications
68. Nanostructure formation in austenitic stainless steel
69. Evaluation of crystal structure and polytypism of SiC in microwave sintered diamond-SiC composite by TEM and HR-TEM
70. Hydrogen induced changes in 316L stainless steel microstructure
71. Statistical model of grain growth in polycrystalline nanomaterials
72. Repair and regeneration of osteochondral defects in the articular joints
73. Corrosion resistance of nanostructured titanium
74. Effect of surface treatment on the microstructure of TA6V
75. Predicting site occupation of Fe in B2 NiAl from ab initio computations
76. Structure and properties of polyurethane/YAG:Tb³⁺ nano-composites with luminescence properties
77. Structure and thermal properties of epoxy resins nano-composites with flame retardants
78. The influence of ZrO₂ containing 10% Eu ³⁺ on the polyurethane hard domain structure of nano-composites with luminescence properties
79. An influence of boehmite modification on the dispersion in the polyurethane matrix
80. Materials hardness estimation by simulation of the indentation process
81. Stability of second phase particles during processing by hydrostatic extrusion
82. The influence of nano - filler on microstructure homogeneity and selected properties of dental ceramic - polymer composites
83. Grain Boundary Migration in Nanocrystalline Iron
84. Thermal properties of L1₀-TiAl from first principle calculations
85. Structural stability of zirconia ceramic in water and acid solutions
86. The influence of the structure of metastable τ - phase on magnetic hysteretic properties of Мn_55.5Аl₄₄С_0.5 alloy
87. Morphology and chemical characterization of Ti surfaces modified for biomedical applications
88. Evaluation of degradation degree of dental hybrid composite used as permanent fillings
89. Optimization of particle reinforced lead-free solders
90. Microstructural evaluation during particles addition to lead-free solders
91. Thermal stability of hybrid polyurethane and modified boehmite
92. Applications of quantitative image analysis to the description of the morphology of hybrid polyurea-nitryle-urethanes
93. Improvement of wetting and bonding of SiO₂ ceramics and urea-urethane elastomer
94. A hybrid atomistic-continuum finite element modelling of locally disordered crystalline structure
95. The role of the weak points in the corrosion resistance of hydrostatically extruded steel porducts
96. The size effect in strength and fracture toughness of deformation origin submicro- and nanomaterials.
97. The influence of hydrostatic extrusion on mechanical properties and tribological characteristics of an austenitic stainless steel
98. Fabrication and micro-structure characterization of Al2O3/Ni-P composites with interpenetrating phases
99. Hydrostatic extrusion of intermetallic Ti-Al layers
100. PULSE PLASMA SINTERING OF A NANOCRYSTALLINE Cu POWDER
101. NANOCRYSTALLINE Cu-Al₂O₃ COMPOSITES SINTERED BY THE PULSE PLASMA TECHNIQUE
102. Mechanical properties of aluminium processed by equal channel angular pressing
103. Model for intermetallic phase and intermetallic compound solidification during diffusion soldering
104. Texture Development in Model Al-Li Alloy Subjected to Severe Plastic Deformation
105. The Influence of hydrostatic extrusion on microstructure of 6082 aluminum alloy
106. Combination of ECAP and Hydrostatic Extrusion for ultra-fine grain (UFG) microstructure generation in 99.98% nickel.
107. Microstructure refinement under high plastic strain rates in hydrostatic extrusion process
108. Influence of severe plastic deformation on PLC effect in Al 5XXX alloy
109. Mechanical properties and deformation behaviour of ultra-fine grained nickel.
110. Formation of ultrafine gradient structure in hard magnetic alloy Fe-30%Cr-8%Co
111. Sintering temperature effect on structure and properties of Al2O3/Ni-P composites with interpenetrating phases
112. PLASTIC PROPERTIES OF GaN AND Al₂O₃ CRYSTAL: FEM-SIMULATION OF NANOINDENTATION CONFIRMED BY HIGH-RESOLUTION MICROSCOPY
113. SEM investigations of tooth/ filling bonding
114. Measuring the Grain Size Distribution of Pr-doped Zirconia Nanopowders obtained by Microwave Driven Hydrothermal Synthesis
115. Nanometals for medical applications
116. Effect of sever plastic deformation method on microstrucure and mechanical properties of Al and Cu
117. The influence of twin bands density on microstructure of 316LVM austenitic stainless steel subjected to transverse rolling
118. Microstructure evaluation in an Al-Li alloy processed by severe plastic deformation
119. Polymer matrix composites with nanoparticles of TiC obtained by a sol-gel method
120. Annealing temperature effect on residual stresses in 316L steel subjected to HPT process
121. FINITE ELEMENT MODELLING OF THE RESIDUAL STRESSES IN THE CERAMIC-ELASTOMER COMPOSITES
122. EFFECT OF INITIAL MICROSTRUCTURE ON MECHANICAL PROPERTIES OF THE Al-Cu-Mg-Mn ALLOY PROCESSED BY HYDROSTATIC EXTRUSION
123. THE INFLUENCE OF HIGH-ANGLE BOUNDARIES ON THE MECHANICAL PROPERTIES OF NANO-CRYSTALLINE IRON OBTAINED BY SEVERE PLASTIC DEFORMATION
124. Modelling the interaction of crack tip with nanostructure, which creating by deformation.
125. SHRINKAGE OF DENTAL POLYMERIC COMPOSITES
126. IN VIVO WEAR OF POLYETHYELNE GLENOID COMPONENTS IN TOTAL SHOULDER ARTHROPLASTY
127. Atomic-scale Ab-initio computations of the B2-RuAl
128. Ab-initio calculations of elastic properties Ni3Al and TiAl under pressure
129. Modelling of the Influence of the Grain Size Distribution on the Grain Growth in Nanocrystals
130. Ductility of Nanocrystalline Materials Processed by Severe Plastic Deformation
131. Structural-strength aspects of glass/metallic composite based on Co-Cr-Mo implantation alloy
132. Microstructure and mechanical properties of binary Al-Li alloys processed by ECAP
133. Microstructure of the ceramic - polymer composites for dental applications
134. Effect of Non-conventional Large Deformations on Microstructure and Properties of Metals
135. Excellent Mechanical Properties of Nickel Processed by High Pressure Techniques
136. Morphology and properties of oxide films formed on the nanocrystalline 316L austenite steel
137. Al2O3-Fe functionally graded materials fabricated under magnetic field
138. Professor CZOCHRALSKI - Distinguished Scientist and Inventor, Founder of the Modern Materials Science
139. The influence of temperature and pressure on possibility of obtaining Al₂O₃/Ni-P nanocomposite through hot pressing process.
140. Mechanical properties nanostructured iron obtained by different methods of Severe Plastic Deformation
141. Strain localization in nanocrystalline iron after Severe Plastic Deformation
142. Non-elastic behaviours of high-porosity ceramics and ceramic-polymer composites
143. The Superplasticity of Hard Magnetic Alloy Fe-23wt.%Co-30%Cr with Submicrocrystalline Structure
144. Microstructure of Ni-P thin layers obtained by a chemical method
145. Hydrostatic extrusion and nanostructure formation in an aluminium alloy
146. Quantitative Description of Microstructure of Nano-materials
147. The Structure and Mechanical Properties of Low Carbon Low Alloy Steel Subjected to Severe Plastic Deformation
148. Studies of Ni-P Thin Films by Electroles Deposition Method
149. Stereology of Nanomaterials
150. Targeted Research Project: Metallic, Ceramic and Organic Nanomaterials: Processing - Structure - Properties - Applications
151. Materials Research in Poland