Search results

1

Orientation Mapping and In Situ Annealing Applied for Characterization of Changes in Aluminium Alloys after Deformation

100%

Bieda M.

Acta Physica Polonica A

|

2016

|

vol. 130

|

issue 4

979-981

EN

The paper presents application of combined in situ annealing and orientation mapping technique for investigation the microstructural changes in the aluminium alloy 6013 with bimodal distribution of the second phase particles during recovery and recrystallization processes. Information about grain distribution, misorientation between grains, size and shape of the grains at each stage of recrystallization process were obtained. Complexity of the experimental procedure is defined and discussed in order to avoid artificial results. Although the article described the advantages and disadvantages of those method used in transmission electron microscopy and scanning electron microscopy in the work the results from scanning electron microscopy/electron backscattering diffraction in situ heating experiments are highlighted. Obtained data are in a good agreement with previous transmission electron microscopy and calorimetry studies.

2

Characterization of Precipitates in Aluminium Alloy 6013 after Cold-Rolling and Annealing

64%

Bieda M., Jarzębska A.

Acta Physica Polonica A

|

2016

|

vol. 130

|

issue 4

988-990

EN

The aim of the present work was to observe changes in precipitations during annealing after cold-rolling. Series of the samples from cold-rolled AA6013 were prepared and compared to undeformed samples. The samples were annealed at the temperatures equal to 260, 490°C for undeformed state and at 280, 360, and 530°C for cold-rolled state. For investigation thin foils were prepared. Chemical composition and crystal structure of precipitates was analysed and described using transmission electron microscopy imaging, X-ray energy-dispersive spectroscopy and selected-area diffraction techniques. The researches indicated that low annealing temperatures caused dissolution of metastable β and Q phases. With increasing temperature there also occurred growth of Q phase. At highest annealing temperatures there were noticed precipitations of β phase again. Microstructural observation also revealed an impact of those particles on recrystallization processes.

3

Microstructure of Commercial Purity Titanium Subjected to Complex Loading by the Kobo Method

51%

Kawałko J., Sztwiertnia K., Bieda M.

Archives of Metallurgy and Materials

|

2016

|

issue 1

4

Influence of Degree of Deformation and Aging Time on Mechanical Properties and Microstructure of Aluminium Alloy with Zinc / Wpływ Stopnia Odkształcenia I Czasu Starzenia Na Właściwośi Mechaniczne I Mikrostrukturę Stopu Aluminium Z Cynkiem

51%

Jarzębska A., Bogucki R., Bieda M.

Archives of Metallurgy and Materials

|

2015

|

issue 4

5

Microstructure of Polycrystalline Zinc Subjected to Plastic Deformation by Complex Loading / Mikrostruktura Polikrystalicznego Cynku Odkształconego Plastycznie W Złozonym Schemacie Deformacji

51%

Sztwiertnia K., Berent K., Kawałko J., Bieda M.

Archives of Metallurgy and Materials

|

2013

|

issue 1

6

Analysis of Microstructure and Mechanical Properties Changes in AA1050 Aluminum Subjected to ECAP and KoBo Processes / Analiza Zmian Mikrostruktury I Własności Mechanicznych Aluminium AA1050 Po Procesie ECAP I KoBo

45%

Sztwiertnia K., Bogucki R., Sulikowska K., Ostachowski P., Bieda M.

Archives of Metallurgy and Materials

|

2015

|

issue 4

7

Texture and Microtexture of Pure (6N) and Commercially Pure Aluminum after Deformation by Extrusion with Forward-Backward Rotating Die (Kobo)

45%

Bieda M., Sztwiertnia K., Boczkal S., Koprowski P., Pieła K.

Archives of Metallurgy and Materials

|

2016

|

issue 1

8

Thermal Stability of AA1050 Aluminum Alloy after Equal Channel Angular Pressing

45%

Koprowski P., Sztwiertnia K., Bogucki R., Bieda M., Kawałko J.

Archives of Metallurgy and Materials

|

2017

|

vol. 62

|

issue 2

9

Analysis of computational complexity in holographic lens-less projection

39%

Kowalczyk A., Bieda M., Makowski M., Ducin I., Kakarenko K., Suszek J., Sobczyk A.

|

vol. 6

|

issue 3

84-86

EN

In lens-less projection the illuminating wavefront must be modified, so that after propagation on a certain distance it would form an image on the screen. Formed images will be displayed with a frame rate minimum of 20fps in the case of an animated movie. Thus, the speed of computing is extremely important. Computing might be performed by the central processing unit (CPU) or the graphics processing unit (GPU). Reaching a compromise between computational complexity (as well as the time of computing) and the quality of an obtained image is needed. This leads to a need for a proper iteration number of an algorithm, its parameters and size of computing matrices.

10

Experimental study of noise and image resolution in holographic projection with different spatial division techniques

39%

Kakarenko K., Ducin I., Makowski M., Kowalczyk A., Bieda M., Suszek J.

|

vol. 6

|

issue 3

96-98

EN

In lens-less projection it is reasonable to display on the Spatial Light Modulator various holographic phase distributions and decide which gives the best results on the projection screen. The merit functions are high contrast and low noise ratio in projected images. For that reason we designed holograms to be displayed on the light modulator in 7 different methods. In particular, different resolutions and placements of mosaics of sub-holograms were examined.

11

Optimized computation method for real - time holographic formation of color images

39%

Makowski M., Ducin I., Kakarenko K., Kowalczyk A., Bieda M., Suszek J.

|

vol. 6

|

issue 3

81-83

EN

A simple method is presented of decreasing the calculation time of CGH for lensless Fourier holograms. The proposed method takes advantage of the fact that modern displays are rectangular with a high image proportion ratio of 16:9 or even higher. The CGH was calculated on a matrix of 512×1024 points. The use of small rectangular calculation matrices allowed three times fasters calculation with sustained contrast and noise ratio and greatly improved resolution.

12

Efficient noise averaging in color holography by integration on shifted Fourier spectra

39%

Ducin I., Kakarenko K., Makowski M., Kowalczyk A., Bieda M., Suszek J.

|

vol. 6

|

issue 3

99-101

EN

Modern holography is dealing mainly with speckle noise and computational complexity. A compromise is required between computational complexity (computing time) and quality of obtained images. This leads to a need to obtain a simple method of noise suppression with low computation complexity. An improved efficient projection of color images is presented. It uses time averaging of intensity patterns reconstructed from the same Fourier hologram with lateral shifting in x and y direction. We try to establish the optimal step of shifting the Fourier spectra in both directions for each of the primary colors.

13

Three-Dimensional Investigations of Finely Grained Materials/ Trójwymiarowa Analiza Materiałów Drobnokrystalicznych

39%

Bigos A., Bobrowski P., Faryna M., Homa M., Sypien A., Bieda M.

Archives of Metallurgy and Materials

|

2014

|

issue 4

14

Polarimetric Optical Fiber Sensors for Dynamic Strain Measurement in Composite Materials

27%

Domański A., Bieda M., Lesiak P., Makowski P., Szeląg M., Poczęsny T., Prokopczuk K., Sobotka P., Chychłowski M., Sierakowski M., Woliński T.

Acta Physica Polonica A

|

2013

|

vol. 124

|

issue 3

399-401

EN

Polarimetric optical fiber sensors possess possibility of temperature compensation, dynamic and integral system of strain monitoring, as well as low cost of photo-detecting elements. In the paper we present results of the sensor analysis with different kinds of birefringent optical fibers leading to an optimal setup for dynamic strain monitoring in composite materials. A great attention is put on parameters of the light sources like coherence and width of spectrum and their influence on dynamics of the strain sensor.

Refine search results

Orientation Mapping and In Situ Annealing Applied for Characterization of Changes in Aluminium Alloys after Deformation

Characterization of Precipitates in Aluminium Alloy 6013 after Cold-Rolling and Annealing

Microstructure of Commercial Purity Titanium Subjected to Complex Loading by the Kobo Method

Influence of Degree of Deformation and Aging Time on Mechanical Properties and Microstructure of Aluminium Alloy with Zinc / Wpływ Stopnia Odkształcenia I Czasu Starzenia Na Właściwośi Mechaniczne I Mikrostrukturę Stopu Aluminium Z Cynkiem

Microstructure of Polycrystalline Zinc Subjected to Plastic Deformation by Complex Loading / Mikrostruktura Polikrystalicznego Cynku Odkształconego Plastycznie W Złozonym Schemacie Deformacji

Analysis of Microstructure and Mechanical Properties Changes in AA1050 Aluminum Subjected to ECAP and KoBo Processes / Analiza Zmian Mikrostruktury I Własności Mechanicznych Aluminium AA1050 Po Procesie ECAP I KoBo

Texture and Microtexture of Pure (6N) and Commercially Pure Aluminum after Deformation by Extrusion with Forward-Backward Rotating Die (Kobo)

Thermal Stability of AA1050 Aluminum Alloy after Equal Channel Angular Pressing

Analysis of computational complexity in holographic lens-less projection

Experimental study of noise and image resolution in holographic projection with different spatial division techniques

Optimized computation method for real - time holographic formation of color images

Efficient noise averaging in color holography by integration on shifted Fourier spectra

Three-Dimensional Investigations of Finely Grained Materials/ Trójwymiarowa Analiza Materiałów Drobnokrystalicznych

Polarimetric Optical Fiber Sensors for Dynamic Strain Measurement in Composite Materials