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1

The Effect of the Length of the Drawing Die Sizing Portion on the Energy and Force Parameters of the Medium-Carbon Steel Wire Drawing Process

100%

Suliga M., Jabłońska M., Suliga M., Jabłońska M.

Archives of Metallurgy and Materials

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2019

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vol. 64

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issue 4

2

The Mechanical Properties of AlSi17Cu5 Cast Alloy after Overheating and Modification of CuP Master Alloy

89%

Piątkowski J., Jabłońska M.

Archives of Foundry Engineering

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2013

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issue 3

3

Vacancy Formation in Fe-Al of B2 and DO_3 Alloys

72%

Kansy J., Hanc A., Giebel D., Jabłońska M.

Acta Physica Polonica A

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2008

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vol. 113

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issue 5

1409-1415

EN

The positron lifetime spectroscopy is employed to study vacancy formation in intermetallic phases of DO_3 and B2 structures from Fe-Al system as a function of Al concentration, ternary additive (Cr) and their thermal treatment. Lifetime spectra were fitted en block by a simple trapping model encoded directly to the software (computer program LT-9). In the investigated range of Al concentration (28, 38, 42, and 45 at%) only two types of defects are found. In DO_3 region a single type of defects (characterized by positron lifetime τ_1=170±2 ps) is detected and indicated as vacancies in the Fe sublattice (V_{Fe}). In B2 region a small amount of an additional type of defects (characterized by positron lifetime τ_2=214±13 ps) appears. Supposedly, these are vacancies in Al sublattice (V_{Al}). For Fe28Al and Fe28Al5Cr samples changes in V_{Fe} concentration are determined as a function of the sample composition, annealing time at 1000°C and quenching the samples to air and oil. The defect concentration increases with increase in Al content. For FeAl with Al above 38 at%, the total concentration of defects is so high that positrons are exclusively trapped by defects. Therefore the concentrations V_{Al} and V_{Fe} cannot be determined separately. However, the ratio of V_{Al} concentration to V_{Fe} concentration is estimated as a function of Al content.

4

Influence of Recrystallization Annealing on the Properties and Structure of Low-Carbon Ferritic Steel IF

72%

Kowalczyk K., Jabłońska M., Rusz S., Junak G.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 4

5

Influence of the Drece Process of Severe Plastic Deformation on the Mechanical Properties of the Ultra-Low Carbon Interstitial Free Steel

72%

Kowalczyk K., Jabłońska M., Rusz S., Bednarczyk I.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 4

6

Deformation Microstructures in Metallic Materials after Severe Plastic Deformation by Rolling with Cyclic Movement of Rolls

72%

Urbańczyk-Gucwa A., Bednarczyk I., Jabłońska M., Rodak K.

Acta Physica Polonica A

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2016

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vol. 130

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issue 4

975-978

EN

The results of the microstructure investigations of the pure Al and AlMg5 alloy and pure Cu and CuFe2 alloy after the application of severe plastic deformation implemented by rolling with the cyclic movement of the rolls are presented in this paper. The rolling with the cyclic movement of the rolls was carried out at values: the rolling rate v=1 rpm, the frequency of rolls movement f=1 Hz, the amplitude of rolls movement A=1.6 mm. Maximal values of rolling reduction at 6 passes was ε_{h}=80%. The structure of the these materials was analyzed using scanning transmission electron microscope. The quantitative studies of the substructure was performed with MET-ILO software, on the basis of images acquired on scanning transmission electron microscope. Performed substructure investigations showed that using the rolling with the cyclic movement of the rolls method can refine the microstructure of these materials to the ultrafine scale.

7

Heat Treatment of CuFe2 and CuCr0.6 Alloys and the Effect of Precipitates on the Grain Refinement

72%

Urbańczyk-Gucwa A., Amrogowicz P., Jabłońska M., Rodak K.

Acta Physica Polonica A

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2016

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vol. 130

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issue 4

1016-1019

EN

The results of microstructure and hardness investigations of the CuFe2 and CuCr0.6 alloys after solution and ageing treatment are presented in this paper. The variants of heat treatment as: solution at 1000°C per 3 h and ageing treatment at 500°C for 2 h and at 700°C for 24 h were chosen for severe plastic deformation process realized by rolling with the cyclic movement of rolls method. The structure of CuFe2 and CuCr0.6 alloys was analysed using scanning transmission electron microscopy, and the quantitative studies of the substructure was performed with MET-ILO software, on the basis of images acquired on scanning transmission electron microscope.

8

Study of Dislocation Substructures in High-Mn Steels after Dynamic Deformation Tests

63%

Śmiglewicz A., Moćko W., Rodak K., Bednarczyk I., Jabłońska M.

Acta Physica Polonica A

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2016

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vol. 130

|

issue 4

942-945

EN

The article presents the dynamic mechanical properties of two types of high manganese austenitic TWIP steels. The investigations were carried out for the wide range of strain rates from 10¯² s¯¹ up to 4×10³ s¯¹ using servo-hydraulic testing machine and split Hopkinson bar for the quasi-static and dynamic loading regime, respectively. The mechanical properties at different strain rates like yield strength and true stress were calculated out on the base of the results of impact tests. In the next step, the microstructure of the analyzed steels after different deformation rates were observed by scanning transmission electron microscopy technique in order to disclose a dislocation structures and mainly the TWIP effect. In the studies observed that with the strain rate increasing yield strength as well as true stress for 0.3 true strain increasing in both steels. The microstructure observations reveal the influence of strain rate on the structure evolution for analyzed steels.

9

Properties and Structure of X30MnAlSi26-4-3 High Strength Steel Subjected to Dynamic Compression Processes

63%

Śmiglewicz A., Hadasik E., Kowalczyk K., Jabłońska M., Moćko W.

Archives of Metallurgy and Materials

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2017

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vol. 62

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issue 4

10

Plasticity of Low Aluminum Alloys from Fe-Al System

53%

Bednarczyk I., Jabłońska M.

Archives of Metallurgy and Materials

|

2012

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issue 1

11

Optimization Of Laboratory Hot Rolling Of Brittle Fe-40at.%Al-Zr-B Aluminide

46%

Kawulok P., Rusz S., Kawulok R., Opěla P., Jabłońska M., Hadasik E., Schindler I., Kopeček J., Fabík R.

Archives of Metallurgy and Materials

|

2015

|

issue 3

Refine search results

The Effect of the Length of the Drawing Die Sizing Portion on the Energy and Force Parameters of the Medium-Carbon Steel Wire Drawing Process

The Mechanical Properties of AlSi17Cu5 Cast Alloy after Overheating and Modification of CuP Master Alloy

Vacancy Formation in Fe-Al of B2 and DO_3 Alloys

Influence of Recrystallization Annealing on the Properties and Structure of Low-Carbon Ferritic Steel IF

Influence of the Drece Process of Severe Plastic Deformation on the Mechanical Properties of the Ultra-Low Carbon Interstitial Free Steel

Deformation Microstructures in Metallic Materials after Severe Plastic Deformation by Rolling with Cyclic Movement of Rolls

Heat Treatment of CuFe2 and CuCr0.6 Alloys and the Effect of Precipitates on the Grain Refinement

Study of Dislocation Substructures in High-Mn Steels after Dynamic Deformation Tests

Properties and Structure of X30MnAlSi26-4-3 High Strength Steel Subjected to Dynamic Compression Processes

Plasticity of Low Aluminum Alloys from Fe-Al System

Optimization Of Laboratory Hot Rolling Of Brittle Fe-40at.%Al-Zr-B Aluminide