Severe Plastic Deformation — Accumulative Roll Bonding

2007 ◽  
pp. 230-251
Author(s):  
John G. Lenard
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
Roll Bonding

Evolution of Texture in ARB Processing of Al 99.8 %

2005 ◽  
Vol 495-497 ◽  
pp. 797-802
Author(s):  
Jan Kuśnierz ◽  
J. Bogucka
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Crystallographic Texture ◽  
Accumulative Roll Bonding ◽  
Orientation Distribution ◽  
Industrial Practice ◽  
Roll Bonding ◽  
Rolled Material

The accumulative roll-bonding (ARB) process, invented a few years ago, is a promising mode for introducing severe plastic deformation into industrial practice. The ARB process consists in rolling of the pack of two sheets up to 50 %. Then, the rolled material is sectioned into two halves, stacked and the procedure of roll-bonding is repeated. The orientation distribution of ARB processed Al 98 % up to e ~ 12 is analyzed in the paper. The evolution of crystallographic texture has been discussed in relation with changes of mechanical properties and structure.

Microstructure Evolution during the Accumulative Roll Bonding Process in Armco Iron

2012 ◽  
Vol 706-709 ◽  
pp. 1757-1762
Author(s):  
Erell Bonnot ◽  
François Brisset ◽  
Anne Laure Helbert ◽  
Thierry Baudin
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
Armco Iron ◽  
Rolled Strip ◽  
Electron Backscattered Diffraction ◽  
Roll Bonding ◽  
Ultrafine Grained ◽  
Ebsd Technique ◽  
Number Of Cycles

The Armco iron is one of the purest commercial iron with very low levels of carbon, oxygen and nitrogen. In order to improve the mechanical properties, it is worth applying severe plastic deformation to obtain ultrafine-grained bulk materials, with grain size lower than 1 μm. In this study, samples of Armco iron were subjected to a technique of severe plastic deformation named Accumulative Roll Bonding (ARB). This method consists in rolling to 50% two sheets pack of which the stacked surfaces were initially cleaned. Then, the rolled strip is sectioned in two halves, cleaned and stacked again and the procedure of roll-bonding repeated. Practically, the process can be repeated without limits. The important parameter of ARB is the number of cycles and then the consequent number of layers of the final sample. By means of the Electron Backscattered Diffraction (EBSD) technique, the evolution of both microstructure and texture as regard to the number of ARB cycles was studied. The analysis of mean grains size and high angle grain boundaries (HAGB) fraction as a function of the number of cycles showed an early formation of a subgrained structure with low angle boundaries and then the evolution of the microstructure towards an ultrafine-grained structure with an increase of HAGB.

Texture Evolution of Armco Iron during Accumulative Roll Bonding Process

2011 ◽  
Vol 702-703 ◽  
pp. 177-181
Author(s):  
Erell Bonnot ◽  
François Brisset ◽  
Anne Laure Helbert ◽  
Thierry Baudin
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Severe Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
Armco Iron ◽  
Texture Evolution ◽  
Equivalent Strain ◽  
Electron Backscattered Diffraction ◽  
Roll Bonding ◽  
Number Of Cycles

The Armco iron is one of the purest commercial iron with very low levels of carbon, oxygen and nitrogen. In order to improve the mechanical properties, it is worth applying severe plastic deformation to obtain ultrafine-grained bulk materials, with grain size <1µm. In this study, samples of Armco iron were subjected to a technique of severe plastic deformation named Accumulative Roll Bonding (ARB). The important parameter of ARB is the number of cycles and then the von Mises equivalent strain. By means of the Electron BackScattered Diffraction (EBSD) technique, the texture evolution with the number of cycles was studied. The microhardness was also measured in function of the equivalent strain. Finally, the mean grain size and the fraction of high angle grain boundaries were determined as a function of the number of cycles.

Evolution of Microstructure and Texture of Pure Al Single Crystal Having {112} Orientation during Severe Plastic Deformation

2007 ◽  
Vol 26-28 ◽  
pp. 405-408 ◽  
Author(s):  
Naoki Ishida ◽  
Daisuke Terada ◽  
Keizo Kashihara ◽  
Nobuhiro Tsuji
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Single Crystal ◽  
Accumulative Roll Bonding ◽  
Equivalent Strain ◽  
Roll Bonding ◽  
Single Crystal Specimen ◽  
Ultrafine Grained ◽  
The Matrix ◽  
Evolution Of Microstructure

The sheet of pure Al (99.99%) single crystal having (1 12)[110] orientation was deformed up to equivalent strain of 6.4 by the accumulative roll-bonding (ARB) process. The microstructures and orientation of the single crystal ARB-processed by various cycles were characterized by the EBSP measurement. After 1cycle-ARB process, the crystal was macroscopically subdivided into two matrices (macroscopic grain subdivision). These matrices exhibits two different variants of brass orientation, which are (1 01)[121] and (011)[211]. In addition to the macroscopic grain subdivision, microscopic grain subdivision also occurred within the matrix to form an ultrafine grained structure in the single crystal specimen after high strains.

Nanostructuring Pure Zr by Severe Plastic Deformation

2008 ◽  
Author(s):  
M. T. Pe´rez-Prado ◽  
A. P. Zhilyaev ◽  
L. Jiang ◽  
M. E. Kassner ◽  
O. A. Ruano
Keyword(s):  
Plastic Deformation ◽  
High Pressure ◽  
Severe Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
High Pressure Torsion ◽  
Metals And Alloys ◽  
Roll Bonding ◽  
Nanostructured Metals ◽  
Fcc Materials

Severe plastic deformation (SPD) techniques have now successfully been applied to fabricate a large number of nanostructured metals and alloys. Most studies have so far focused on fcc materials, although some studies on Ti and Mg also exist. In this work we describe the nanostructures resulting from processing pure Zr by high pressure torsion (HPT) and accumulative roll bonding (ARB).

Wear Resistance of SPD-Processed Alloys

2010 ◽  
Vol 667-669 ◽  
pp. 1095-1100
Author(s):  
Nong Gao ◽  
Chuan Ting Wang ◽  
Robert J.K. Wood ◽  
Terence G. Langdon
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Severe Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
Review Paper ◽  
Roll Bonding ◽  
Fine Grained ◽  
Work Related ◽  
Angular Pressing ◽  
Deformation Processes

Various different severe plastic deformation processes (SPD) have been developed to produce ultra-fine grained (UFG) materials during the last two decades. One very important material property that the UFG materials should have for structural materials application is good wear resistance. This review paper presents some recent work related to the wear resistance of materials processed by SPD, in particular for alloys processed by using equal-channel angular pressing (ECAP) and accumulative roll-bonding (ARB).

scholarly journals TEKNOLOGI TERBARU SEVERE PLASTIC DEFORMATION (SPD) UNTUK APLIKASI PERANGKAT KEMILITERAN

DEFENDONESIA ◽  
2017 ◽  
Vol 3 (1) ◽  
pp. 10-18
Author(s):  
Agus Pramono
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Equal Channel Angular Pressing ◽  
Accumulative Roll Bonding ◽  
Roll Bonding ◽  
Angular Pressing ◽  
Ultrafine Grained

Teknologi severe plastic deformation (SPD) atau deformasi plastis menyeluruh merupakan proses pembentukan logam di mana strain plastik ultra-besar dimasukkan ke dalam perangkat cetakan dan mesin pada proses pengerjaan logam. Hal ini dimaksutkan untuk menciptakan logam berbutir ultra-halus / Ultrafine Grained (UFG), sehingga sifat dari logam tersebut akan meningkat secara drastis. Ada tiga jenis metode dalam teknologi SPD; Equal Channel Angular Pressing (ECAP), High PressureTorsion (HPT) dan Accumulative Roll Bonding (ARB). Serta beberapa teknologi terbaru yang dikembangkan di beberapa negara seperti Korea, Jerman, Jepang, Cina, Rusia dan Estonia. Beberapa metode SPD terbaru dikembangkan untuk memperingkas proses agar mudah diterapkan dalam industri. Dalam penerapan perangkat kemiliteran, teknologi yang dibutuhkan harus mampu berubah menjadi kekuatan yang lebih mobile, survivable serta mematikan sekaligus memberi dampak yang lebih baik terhadap lingkungan (tidak menimbulkan efek polusi). Ada banyak tantangan teknis yang belum diatasi. Akibatnya, produsen potensial logam dengan teknologi terbaru SPD masih memerlukan rantai proses untuk penerapan aplikasi. Mereka juga khawatir tentang kelangsungan hidup komersial logam proses SPD tersebut, yang mana dalam operasional sangat tergantung pada permintaan dari pasar potensial dan biaya produksi. Keduanya adalah faktor yang sulit untuk dievaluasi karena rendahnya ketersediaan logam UFG dan ketidakpastian mengenai teknologi SPD. Hal ini telah mendorong eksplorasi aplikasi untuk peralatan militer – khususnya berbasis material komposit, seperti; helikopter, tank, panser dan baju besi serta helm militer untuk pasukan militer dalam bertempur.

scholarly journals Accumulative Roll Bonding of Pure Copper and IF Steel

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Saeed Tamimi ◽  
Mostafa Ketabchi ◽  
Nader Parvin ◽  
Mehdi Sanjari ◽  
Augusto Lopes
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
Pure Copper ◽  
Rolling Process ◽  
Ultrafine Grain ◽  
Crystallographic Structure ◽  
Interstitial Free ◽  
If Steel ◽  
Roll Bonding

Severe plastic deformation is a new method to produce ultrafine grain materials with enhanced mechanical properties. The main objective of this work is to investigate whether accumulative roll bonding (ARB) is an effective grain refinement technique for two engineering materials of pure copper and interstitial free (IF) steel strips. Additionally, the influence of severely plastic deformation imposed by ARB on the mechanical properties of these materials with different crystallographic structure is taken into account. For this purpose, a number of ARB processes were performed at elevated temperature on the materials with 50% of plastic deformation in each rolling pass. Hardness of the samples was measured using microhardness tests. It was found that both the ultimate grain size achieved, and the degree of bonding depend on the number of rolling passes and the total plastic deformation. The rolling process was stopped in the 4th cycle for copper and the 10th cycle for IF steel, until cracking of the edges became pronounced. The effects of process temperature and wire-brushing as significant parameters in ARB process on the mechanical behaviour of the samples were evaluated.

Annealing Response of Al-0.22Sc-0.13Zr Alloy Processed by Accumulative Roll Bonding

2008 ◽  
Vol 584-586 ◽  
pp. 899-904 ◽  
Author(s):  
Petr Homola ◽  
Margarita Slámová ◽  
Vladivoj Očenášek ◽  
J. Uhlíř ◽  
Miroslav Cieslar
Keyword(s):  
Thermal Stability ◽  
Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
Superplastic Forming ◽  
Aged Specimen ◽  
Roll Bonding ◽  
Fine Grained ◽  
Peak Aged ◽  
Pre Treatment ◽  
Thermal Stability Of

Ultra-fine grained (UFG) materials can be produced by several techniques involving severe plastic deformation (SPD). Accumulative Roll Bonding (ARB) is one of the SPD methods that enable the production of large amounts of UFG sheets. UFG sheets were prepared by up to six cycles of ARB at ambient temperature from an Al-0.22Sc-0.13Zr alloy in two states: a non-agehardened and a peak-aged. The effect of Al3(Sc1-xZrx) precipitates on the thermal stability of the UFG structures produced by ARB was investigated by isochronal annealing at temperatures between 200 and 550 °C. Additionally, the non-age-hardened ARB material was peak-aged prior to annealing and annealed together with both as-ARB-processed materials. The changes of microstructure and hardness due to annealing were studied. Annealing at 300 °C induces an additional strengthening in both non-pre-aged ARB materials that may be ascribed to precipitation and growth of coherent Al3(Sc1-xZrx) particles. This result suggests that the hardness decrease introduced by ARB in the peak-aged specimen is due to dissolution of precipitates during deformation. The annealing response of the materials above 300 °C does not depend on their thermal pre-treatment. However, the finely dispersed Al3(Sc1-xZrx) precipitates stabilise the refined deformed microstructure suitable for superplastic forming up to relatively high temperatures.

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