Simulation of RX textures using a 3D Monte Carlo model

• Autorzy: Marthinsen K. , Fjeldberg E.

Warianty tytułu

PL

Numeryczna analiza procesu zaciskania tulei

• Języki publikacji: EN

Abstrakty

EN

The texture predictions of a 3D Potts Monte Carlo (MC) model have been investigated. The model simulations are based on limited experimental input, i.e. only the initial deformation texture (i.e. a typical aluminium rolling texture) in terms of an orientation distribution function (ODF). The MC model predictions have been compared to texture simulations by a statistical recrystallization texture model due to Engler, which has been successfully applied to simulate recrystallization textures for a variety of Al alloys. In general the MC texture predictions are not satisfactory and in some cases deviate considerably from the predictions given by the Engler model. In particular, the Cube texture component, which often dominates recrystallization textures in aluminium alloys, is generally underestimated while on the other hand the retained deformation texture is too strong. The sensitivity of the texture predictions to variations in simulation conditions, related mainly to growth aspects, as well as local texture effects, is found to be limited. However, by artificially increasing the nucleation probability of Cube or by adding a small volume fraction of Cube to the nucleation texture, a significant increase of Cube may be obtained. This observation emphasise the nucleation aspect, i.e. oriented nucleation, as a key to adequately model recrystallization textures.

PL

W opracowaniu przedstawiono wyniki analizy numerycznej procesu zaciskania tulei między innymi na linach stalowych przy pomocy obrotowych segmentów bruzdowych. Omówiono obszary zastosowań wyrobów typu liny i cięgna oraz przedstawiono sposoby wykonywania na nich zakończeń. Analizę numeryczną procesu przeprowadzono w oparciu o metodę elementów skończonych (MES), wykorzystując komercyjny pakiet oprogramowania DEFORM - 3D. Omówiono modele geometryczne zastosowane w obliczeniach oraz wpływ kształtu wykroju na jakość wyrobu. Uzyskane wyniki analizy numerycznej wykorzystano w projekcie przyrządu do praktycznej realizacji tego procesu.

Słowa kluczowe

EN

recrystallization textures; aluminium; computer simulations; potts Monte Carlo

• Wydawca: Wydawnictwa AGH
• Czasopismo: Computer Methods in Materials Science
• Rocznik: 2012
• Tom: Vol. 12, No. 3
• Strony: 137--151
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Marthinsen K.

• Department of Materials Science and Engineering, Norwegian University of Science & Technology, N-7491 Trondheim, Norway

autor

Fjeldberg E.

• Department of Materials Science and Engineering, Norwegian University of Science & Technology, N-7491 Trondheim, Norway

Bibliografia

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