Homogenization and texture development in rapidly solidified AZ91E consolidated by Shear Assisted Processing and Extrusion (ShAPE)

Overman, N. R.; Whalen, S. A.; Bowden, M. E.; Olszta, M. J.; Kruska, K.; Clark, T.; Stevens, E. L.; Darsell, J. T.; Joshi, V. V.; Jiang, X.; Mattlin, K. F.; Mathaudhu, S. N.

doi:10.1016/j.msea.2017.06.062

Title: Homogenization and texture development in rapidly solidified AZ91E consolidated by Shear Assisted Processing and Extrusion (ShAPE)

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Abstract

Shear Assisted Processing and Extrusion (ShAPE) -a novel processing route that combines high shear and extrusion conditions- was evaluated as a processing method to densify melt spun magnesium alloy (AZ91E) flake materials. This study illustrates the microstructural regimes and transitions in crystallographic texture that occur as a result of applying simultaneous linear and rotational shear during extrusion. Characterization of the flake precursor and extruded tube was performed using scanning and transmission electron microscopy, x-ray diffraction and microindentation techniques. Results show a unique transition in the orientation of basal texture development. Despite the high temperatures involved during processing, uniform grain refinement and material homogenization are observed. These results forecast the ability to implement the ShAPE processing approach for a broader range of materials with novel microstructures and high performance.

Authors:: Overman, N. R.; Whalen, S. A.; Bowden, M. E.; Olszta, M. J.; Kruska, K.; Clark, T.; Stevens, E. L.; Darsell, J. T.; Joshi, V. V.; Jiang, X.; Mattlin, K. F.; Mathaudhu, S. N.

Publication Date:: 2017-07-01

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1368121

Report Number(s):: PNNL-SA-122981
Journal ID: ISSN 0921-5093; 49427

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

Additional Journal Information:: Journal Volume: 701; Journal Issue: C; Journal ID: ISSN 0921-5093

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: Rapid Solidification; Magnesium Alloy; Microstructure; Friction Consolidation Extrusion; EBSD; ShAPE; Environmental Molecular Sciences Laboratory

Citation Formats


                    Overman, N. R., Whalen, S. A., Bowden, M. E., Olszta, M. J., Kruska, K., Clark, T., Stevens, E. L., Darsell, J. T., Joshi, V. V., Jiang, X., Mattlin, K. F., and Mathaudhu, S. N. Homogenization and texture development in rapidly solidified AZ91E consolidated by Shear Assisted Processing and Extrusion (ShAPE).  United States: N. p., 2017. 
        Web.  doi:10.1016/j.msea.2017.06.062.

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                    Overman, N. R., Whalen, S. A., Bowden, M. E., Olszta, M. J., Kruska, K., Clark, T., Stevens, E. L., Darsell, J. T., Joshi, V. V., Jiang, X., Mattlin, K. F., & Mathaudhu, S. N. Homogenization and texture development in rapidly solidified AZ91E consolidated by Shear Assisted Processing and Extrusion (ShAPE).  United States.  https://doi.org/10.1016/j.msea.2017.06.062

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                    Overman, N. R., Whalen, S. A., Bowden, M. E., Olszta, M. J., Kruska, K., Clark, T., Stevens, E. L., Darsell, J. T., Joshi, V. V., Jiang, X., Mattlin, K. F., and Mathaudhu, S. N. 2017.  
        "Homogenization and texture development in rapidly solidified AZ91E consolidated by Shear Assisted Processing and Extrusion (ShAPE)".  United States.  https://doi.org/10.1016/j.msea.2017.06.062.

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@article{osti_1368121,

  title        = {Homogenization and texture development in rapidly solidified AZ91E consolidated by Shear Assisted Processing and Extrusion (ShAPE)},

  author       = {Overman, N. R. and Whalen, S. A. and Bowden, M. E. and Olszta, M. J. and Kruska, K. and Clark, T. and Stevens, E. L. and Darsell, J. T. and Joshi, V. V. and Jiang, X. and Mattlin, K. F. and Mathaudhu, S. N.},

  abstractNote = {Shear Assisted Processing and Extrusion (ShAPE) -a novel processing route that combines high shear and extrusion conditions- was evaluated as a processing method to densify melt spun magnesium alloy (AZ91E) flake materials. This study illustrates the microstructural regimes and transitions in crystallographic texture that occur as a result of applying simultaneous linear and rotational shear during extrusion. Characterization of the flake precursor and extruded tube was performed using scanning and transmission electron microscopy, x-ray diffraction and microindentation techniques. Results show a unique transition in the orientation of basal texture development. Despite the high temperatures involved during processing, uniform grain refinement and material homogenization are observed. These results forecast the ability to implement the ShAPE processing approach for a broader range of materials with novel microstructures and high performance.},

  doi          = {10.1016/j.msea.2017.06.062},

  url          = {https://www.osti.gov/biblio/1368121},
  journal      = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},

  issn         = {0921-5093},

  number       = C,

  volume       = 701,

  place        = {United States},

  year         = {2017},

  month        = {7}

}

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