On the Influence of Dispersoids on the Particle Stimulated Nucleation of Recrystallization in an Al-Fe-Si Model Alloy

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The recrystallization of Al-alloys is controlled by precipitates. Whereas large particles generally promote recrystallization by particle stimulated nucleation, finely dispersed precipitates - either already present in the as-deformed state or precipitating during the recrystallization anneal - are known to strongly retard recrystallization. It was the aim of the present study to elucidate these concurring effects of large particles and small dispersoids on recrystallization in a ternary Al-Fe-Si model alloy. For that purpose, samples were prepared according to different pre-annealing treatments so as to comprise different states of precipitation and supersaturation. The evolution of microstructure and texture during rolling and recrystallization ... continued below

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9 p.

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Engler, O. December 31, 1997.

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The recrystallization of Al-alloys is controlled by precipitates. Whereas large particles generally promote recrystallization by particle stimulated nucleation, finely dispersed precipitates - either already present in the as-deformed state or precipitating during the recrystallization anneal - are known to strongly retard recrystallization. It was the aim of the present study to elucidate these concurring effects of large particles and small dispersoids on recrystallization in a ternary Al-Fe-Si model alloy. For that purpose, samples were prepared according to different pre-annealing treatments so as to comprise different states of precipitation and supersaturation. The evolution of microstructure and texture during rolling and recrystallization was characterized by metallography and by conventional X-ray texture analysis. EBSD-local texture investigations were employed to yield information on the efficiency of nucleation at the various nucleation sites and, consequently, on the influence of dispersoids on recrystallization.

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9 p.

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OSTI as DE98003005

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  • International conference on textures and anisotrohy of polycrystals, Claushal (Germany), 22-25 Sep 1997

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  • Other: DE98003005
  • Report No.: LA-UR--97-4288
  • Report No.: CONF-9709189--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 627132
  • Archival Resource Key: ark:/67531/metadc696550

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  • December 31, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 5, 2016, 7:34 p.m.

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Engler, O. On the Influence of Dispersoids on the Particle Stimulated Nucleation of Recrystallization in an Al-Fe-Si Model Alloy, article, December 31, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc696550/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.