Modeling of the recrystallization textures of Al-alloys after hot deformation

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The recrystallization textures of Al-alloys can be explained by a growth selection of grains with an approximate 40{degree}<111> orientation relationship out of a limited spectrum of preferentially formed nucleus orientations. Accordingly, recrystallization textures can be modeled by the multiplication of a function f(g){sup nucl} describing the probability of nucleation of the various orientations with a function f(g){sup grow} representing their growth probability. Whereas the growth probability can be accounted for by a 40{degree}<111> transformation of the rolling texture, the nucleation probability of the respective grains is given by the distribution of potential nucleus orientations, which is known from local texture ... continued below

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17 p.

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Engler, O. & Vatne, H.E. December 1, 1998.

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The recrystallization textures of Al-alloys can be explained by a growth selection of grains with an approximate 40{degree}<111> orientation relationship out of a limited spectrum of preferentially formed nucleus orientations. Accordingly, recrystallization textures can be modeled by the multiplication of a function f(g){sup nucl} describing the probability of nucleation of the various orientations with a function f(g){sup grow} representing their growth probability. Whereas the growth probability can be accounted for by a 40{degree}<111> transformation of the rolling texture, the nucleation probability of the respective grains is given by the distribution of potential nucleus orientations, which is known from local texture analysis for the most important nucleation sites in rolled Al-alloys, cube-bands, grain boundaries and second-phase particles. The contribution of each of these nucleation sites are determined according to an approach to calculate the number of nuclei forming at each nucleation site, which is based on microstructural investigations on the evolution of the various nucleation sites during deformation. The paper describes the model for recrystallization texture simulation in Al-alloys and gives examples of recrystallization textures of AA3004 deformed in plane strain compression at a variety of different deformation temperatures and strain rates.

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17 p.

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OSTI as DE99000940

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  • 1998 Minerals, Metals and Materials Society (TMS) fall meeting, Rosemont, IL (United States), 11-15 Oct 1998

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  • Other: DE99000940
  • Report No.: LA-UR--98-1355
  • Report No.: CONF-981054--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 310023
  • Archival Resource Key: ark:/67531/metadc688982

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  • December 1, 1998

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  • July 25, 2015, 2:20 a.m.

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  • May 20, 2016, 4:27 p.m.

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Engler, O. & Vatne, H.E. Modeling of the recrystallization textures of Al-alloys after hot deformation, article, December 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc688982/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.