Nanometals obtained by severe plastic deformation (SPD) exhibit very high strength combined with satisfactory plasticity. The microstructure of SPD metals can further be optimized by post-deformation heat treatment. In most cases, this heating is performed in radiation furnaces. On the other hand, it has been shown that heating by an electric current may significantly change the course of recrystallization and grain growth, due to the influence of the electric current on the migration of point defects and dislocations.

The aim of this work was to determine the influence of electric current heating on the process of recrystallization and grain growth in nano-structured metals obtained by SPD methods. Austenitic stainless steel 316LVM was used in this context for testing the efficiency of such a heat treatment.

Samples of 316LVM austenitic stainless steel were hydrostatically extruded, in a multi-step process with the total true strain of 1.84 to produce a uniform microstructure consisting of nanotwins. The twins averaged 19 nm in width and 168 nm in length. Earlier results proved that a post-deformation annealing at 700°C results in the formation of a recrystallized structure with nanograins of 68 nm in diameter. In the present study samples were heated to 700°C by alternating current, AC, for different periods of time using Gleeble 3800 thermo-mechanical simulator. Changes in the nanostructure of the AC annealed samples were investigated using transmission and scanning electron microscopes. Microhardness was also measured under the load of 200g.

The results obtained on the SPD samples of 316LVM austenitic stainless steels after conventional and AC heating are compared and discussed.

Acknowledgement

This work was carried out within a NANOMET Project financed under the European Funds for Regional Development (Contract No. POIG.01.03.01-00-015/08).

• 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/18427 must be provided.

1. Financing of industry relevant projects in Poland
2. Joining ultrafine grained aluminium by friction stir welding - processing, microstructure and mechanical properties
3. Experimental evaluation of melting point depression in AlSi/AlN nanomultilayer system
4. Electrospun nanocomposites from PHBV for bone tissue engineering
5. Nanotechnologie w gospodarce województwa podlaskiego
6. (Cd, Mn)Te Crystals for X and Gamma Radiation Detectors - an Alternative Material to CdTe and (Cd,Zn)Te. 
7. Industrial perspectives of nanometals
8. SEM studies of the etched surface of (Cd,Mn)Te
9. Modeling of growth kinetics of SiC single crystal in PVT process
10. Application of micro- and nanostructured biomaterials in regenerative medicine
11. Welcome address
12. Core-shell P(LLA-CL) based electrospun nanofibers for peripheral nerve tissue engineering
13. Surface modification of PCL scaffold changes protein adsorption
14. Atomic force microscopy characterization of corneocytes
15. TiO₂ nanotubes based composite layers for biomedical applications
16. Scale up of nanometals production
17. Modification of epoxy resin properties by adding multi wall carbon nanotubes
18. Możliwości badawcze Laboratorium Skaningowej Mikroskopii Elektronowej na WIM PW
19. Otwarcie konferencji
20. Perspektywy rozwoju nanomateriałów konstrukcyjnych i funkcjonalnych
21. Zastosowania mikroskopii AFM dla farmacji i medycyny
22. Wykorzystanie nanotechnologii w procesie odlewania precyzyjnego
23. Oczyszczanie i modyfikacja nanomateriałów węglowych
24. Modyfikacje polimerów stosowanych w lotnictwie za pomocą nanorurek węglowych
25. Luminescent polyurethane nanocomposites: processing, structure and properties
26. Micro Sensor for cell force measurement
27. Preliminary studies on degradation of polylactides fibers
28. Effect of grain size on reactive diffusion between Ti-Al
29. TEM investigations of the nanostructure, multilayer CrN/Cr coatings obtained by vacuum-arc method
30. Bulk  nanostructured  titanium  fabricated  by  hydrostatic  extrusion
31. Composites PLLA/MWNTs produced by twin-screw microcompounder
32. Polyurethane-based material with calcite and aragonite for tissue engineering composite scaffolds
33.  A  degradable and highly porous polyurethane scaffolds for bone tissue engineering
34. Reduced activation ODS ferritic steel – recent development in high speed hot extrusion processing
35. Investigation of the DLC and novel DLC-polymer hybrid coatings using FIB and SEM techniques
36. A combination of microCT and FEM methods for development of a new scaffold for bone regeneration
37. Properties of transparent elastomer nanocomposites (polyurethane/ ZrO₂:Eu³⁺) as materials for optoelectronic application
38. Investigation of fatique crack growth rate of Al 5484 ultrafine grained alloy after ECAP process
39. Fire retardant polyurethane elastomers/aluminophosphorate nanocomposites for higher temperature application
40. The influence of grain refinement on the corrosion mechanism of 7475 aluminium alloy
41. Wear resistance of the nanostructured 316 LVM austenitic stainless steel processed by hydrostatic extrusion
42. Modelling the influence of the grain size distribution on the properties of nanometals
43. Hybrid functional applied to the study of properties of narrow and wide band gap semiconductors
44. Effect of deformation and strain rate on diminishing of microstructure of aluminium alloys (AlCu4Zr0.5 and AlZn6Mg3CuZr)
45. Grain refinement in CuCrZr by SPD processing
46. Tailoring mechanical properties of nano-structured Eurofer 97 steel for fusion applications
47. Microscopic and surface analytical characterization of TiO₂ nanotubes produced by anodic oxidation and thermal treatment 
48. Investigation of cells interactions with textile scaffolds for bone tissue enginnering
49. Culture of osteoblasts on nanostructured titanium – preliminary observation
50. Electrospun polymeric fibers for cartilage regeneration
51. Biodegradable and bioabsorbable polymeric - ceramic composites for medical applications
52. Modelling of plastic deformation of nano-polycrystalline materials
53. Preliminary examinations of mechanical properties of DLC and novel DLC-polymer hybrid coatings for resurfacing hip prostheses
54. Optimization of the polymeric scaffolds for bone tissue engineering fabricated by rapid prototyping method
55. Bone tissue engineered product based on human bone derived cells and polyurethane scaffold
56. Molecular statics simulation of nanoindentation on nanocrystalline copper
57. Ceramic-polymer composites for medical application
58. Microstructural and mechanical characterization of zirconia based composite
59. The influence of nanosilica on wear resistance of ceramic-polymer composites intended for dental fillings
60. Modeling of order-disorder phase transition in intermetallic compounds
61. Optimization of polyurethane structure as the potential materials for bone tissue engineering applications
62. Fabricationg polyurethane/calcium carbonate composite scaffold for bone tissue engineering
63. Polyurethane nano-composites with luminescence properties for optics and optoelectronics applications.
64. Tailoring mechanical properties by grain refinement and particle redistribution
65. Stochastic Approach To The Changes In The Mechanical Properties Of Nano-Crystalline Materials Induced By Grain Growth
66. Surface effect on atomic ordering in nano-layered L1₀ AB binaries: multiscale Monte Carlo Simulation
67. Nowe materiały metaliczne o strukturze nanometrycznej do zastosowań w nowoczesnych gałęziach gospodarki
68. Characterization of nanopowders
69. Recent Advances in Making Nanometals by Heavy Plastic Deformation
70. Microstructure and mechanical properties of HE-treated titanium depending on its initial state
71. Influence of hydrostatic extrusion parameters on the microstructure and mechanical properties of 6082 aluminium alloy
72. The effect of grain size distribution on mechanical properties of nanometals
73. Morphological and surface analytical characterization of chemically pretreated Ti surfaces intended for biomedical applications
74. Electron microscopy studies of magnesium hydride
75. Microstructure and mechanical properties of 7475 aluminium alloy processed by SPD methods
76. Investigation of aqueous surface processes and corrosion mechanisms of Al-(Cu)-Fe-Cr quasicrystaline approximant
77. Characterization of the effects of hydrostatic extrusion on structure and surface properties of 303 austenitic stainless steel
78. The Effect of Hydrostatic Extrusion on the Corrosion Stability of Austenitic Stainless Steels
79. The Effect of Hydrostatic Extrusion on Resistance of 316 Austenitic Stainless Steel to Pit Nucleation
80. On some peculiarities of electrochemical oxidation of Ti and Ti6Al6V alloy
81. Nanomaterials in dental applications
82. Nanostructure formation in austenitic stainless steel
83. Evaluation of crystal structure and polytypism of SiC in microwave sintered diamond-SiC composite by TEM and HR-TEM
84. Hydrogen induced changes in 316L stainless steel microstructure
85. Statistical model of grain growth in polycrystalline nanomaterials
86. Repair and regeneration of osteochondral defects in the articular joints
87. Corrosion resistance of nanostructured titanium
88. Effect of surface treatment on the microstructure of TA6V
89. Predicting site occupation of Fe in B2 NiAl from ab initio computations
90. Structure and properties of polyurethane/YAG:Tb³⁺ nano-composites with luminescence properties
91. Structure and thermal properties of epoxy resins nano-composites with flame retardants
92. The influence of ZrO₂ containing 10% Eu ³⁺ on the polyurethane hard domain structure of nano-composites with luminescence properties
93. An influence of boehmite modification on the dispersion in the polyurethane matrix
94. Materials hardness estimation by simulation of the indentation process
95. The application of thermodynamic calculations for the semi-solid processing design
96. Stability of second phase particles during processing by hydrostatic extrusion
97. The influence of nano - filler on microstructure homogeneity and selected properties of dental ceramic - polymer composites
98. Grain Boundary Migration in Nanocrystalline Iron
99. Thermal properties of L1₀-TiAl from first principle calculations
100. Structural stability of zirconia ceramic in water and acid solutions
101. The influence of the structure of metastable τ - phase on magnetic hysteretic properties of Мn_55.5Аl₄₄С_0.5 alloy
102. Morphology and chemical characterization of Ti surfaces modified for biomedical applications
103. Evaluation of degradation degree of dental hybrid composite used as permanent fillings
104. Optimization of particle reinforced lead-free solders
105. Microstructural evaluation during particles addition to lead-free solders
106. Thermal stability of hybrid polyurethane and modified boehmite
107. Applications of quantitative image analysis to the description of the morphology of hybrid polyurea-nitryle-urethanes
108. Improvement of wetting and bonding of SiO₂ ceramics and urea-urethane elastomer
109. A hybrid atomistic-continuum finite element modelling of locally disordered crystalline structure
110. The role of the weak points in the corrosion resistance of hydrostatically extruded steel porducts
111. The size effect in strength and fracture toughness of deformation origin submicro- and nanomaterials.
112. The influence of hydrostatic extrusion on mechanical properties and tribological characteristics of an austenitic stainless steel
113. Fabrication and micro-structure characterization of Al2O3/Ni-P composites with interpenetrating phases
114. Hydrostatic extrusion of intermetallic Ti-Al layers
115. PULSE PLASMA SINTERING OF A NANOCRYSTALLINE Cu POWDER
116. NANOCRYSTALLINE Cu-Al₂O₃ COMPOSITES SINTERED BY THE PULSE PLASMA TECHNIQUE
117. Mechanical properties of aluminium processed by equal channel angular pressing
118. MECHANISM OF GRAIN REFINEMENT IN ALUMINIUM ALLOYS IN THE PROCESS OF HYDROSTATIC EXTRUSION
119. Model for intermetallic phase and intermetallic compound solidification during diffusion soldering
120. Texture Development in Model Al-Li Alloy Subjected to Severe Plastic Deformation
121. The Influence of hydrostatic extrusion on microstructure of 6082 aluminum alloy
122. Combination of ECAP and Hydrostatic Extrusion for ultra-fine grain (UFG) microstructure generation in 99.98% nickel.
123. Microstructure refinement under high plastic strain rates in hydrostatic extrusion process
124. Influence of severe plastic deformation on PLC effect in Al 5XXX alloy
125. Mechanical properties and deformation behaviour of ultra-fine grained nickel.
126. Formation of ultrafine gradient structure in hard magnetic alloy Fe-30%Cr-8%Co
127. Sintering temperature effect on structure and properties of Al2O3/Ni-P composites with interpenetrating phases
128. PLASTIC PROPERTIES OF GaN AND Al₂O₃ CRYSTAL: FEM-SIMULATION OF NANOINDENTATION CONFIRMED BY HIGH-RESOLUTION MICROSCOPY
129. SEM investigations of tooth/ filling bonding
130. Measuring the Grain Size Distribution of Pr-doped Zirconia Nanopowders obtained by Microwave Driven Hydrothermal Synthesis
131. Development of microstructure and mechanical properties in nickel deformed by hydrostatic extrusion
132. Nanometals for medical applications
133. Effect of sever plastic deformation method on microstrucure and mechanical properties of Al and Cu
134. The influence of twin bands density on microstructure of 316LVM austenitic stainless steel subjected to transverse rolling
135. Microstructure evaluation in an Al-Li alloy processed by severe plastic deformation
136. Polymer matrix composites with nanoparticles of TiC obtained by a sol-gel method
137. Annealing temperature effect on residual stresses in 316L steel subjected to HPT process
138. FINITE ELEMENT MODELLING OF THE RESIDUAL STRESSES IN THE CERAMIC-ELASTOMER COMPOSITES
139. EFFECT OF INITIAL MICROSTRUCTURE ON MECHANICAL PROPERTIES OF THE Al-Cu-Mg-Mn ALLOY PROCESSED BY HYDROSTATIC EXTRUSION
140. THE INFLUENCE OF HIGH-ANGLE BOUNDARIES ON THE MECHANICAL PROPERTIES OF NANO-CRYSTALLINE IRON OBTAINED BY SEVERE PLASTIC DEFORMATION
141. Modelling the interaction of crack tip with nanostructure, which creating by deformation.
142. SHRINKAGE OF DENTAL POLYMERIC COMPOSITES
143. IN VIVO WEAR OF POLYETHYELNE GLENOID COMPONENTS IN TOTAL SHOULDER ARTHROPLASTY
144. Atomic-scale Ab-initio computations of the B2-RuAl
145. Ab-initio calculations of elastic properties Ni3Al and TiAl under pressure
146. Modelling of the Influence of the Grain Size Distribution on the Grain Growth in Nanocrystals
147. Ductility of Nanocrystalline Materials Processed by Severe Plastic Deformation
148. Structural-strength aspects of glass/metallic composite based on Co-Cr-Mo implantation alloy
149. Microstructure and mechanical properties of binary Al-Li alloys processed by ECAP
150. Microstructure of the ceramic - polymer composites for dental applications
151. Effect of Non-conventional Large Deformations on Microstructure and Properties of Metals
152. Excellent Mechanical Properties of Nickel Processed by High Pressure Techniques
153. Morphology and properties of oxide films formed on the nanocrystalline 316L austenite steel
154. Al2O3-Fe functionally graded materials fabricated under magnetic field
155. Professor CZOCHRALSKI - Distinguished Scientist and Inventor, Founder of the Modern Materials Science
156. New possibilities of achieving ultra - fine grained microstructure in metals and alloys employing MaxStrain technology
157. The influence of temperature and pressure on possibility of obtaining Al₂O₃/Ni-P nanocomposite through hot pressing process.
158. Mechanical properties nanostructured iron obtained by different methods of Severe Plastic Deformation
159. Strain localization in nanocrystalline iron after Severe Plastic Deformation
160. Non-elastic behaviours of high-porosity ceramics and ceramic-polymer composites
161. The Superplasticity of Hard Magnetic Alloy Fe-23wt.%Co-30%Cr with Submicrocrystalline Structure
162. Microstructure of Ni-P thin layers obtained by a chemical method
163. Hydrostatic extrusion and nanostructure formation in an aluminium alloy
164. Quantitative Description of Microstructure of Nano-materials
165. The Structure and Mechanical Properties of Low Carbon Low Alloy Steel Subjected to Severe Plastic Deformation
166. Studies of Ni-P Thin Films by Electroles Deposition Method
167. Stereology of Nanomaterials
168. Targeted Research Project: Metallic, Ceramic and Organic Nanomaterials: Processing - Structure - Properties - Applications
169. Materials Research in Poland