Google Search

WWW   Northwestern   Dunand Group

Home | About Us | Contact Us | Site Map
| Photos | Videos |
| Prof. David Dunand | Dr. Dinc Erdeniz | Dr. James Coakley | Pete Bocchini | Michael Rawlings | Matthew Glazer | Daniel Sauza | Ashley Pazypuente-Ewh | Amelia Plunk | Zilong Wang | Shannon Taylor | Philipp Okle | Group Alumni |
| High Temperature Alloys | Metallic Foams | Cultural Heritage Materials |
| Searchable Literature Database | Journal Articles Sorted by Year of Publication | U.S. Patents |

Chris Booth-Morrison

Cast dilute Al-Zr-Sc alloys are excellent candidates for some high-temperature automotive and aerospace applications where cast iron and titanium alloys are currently the materials of choice. Al-Zr-Sc alloys offer promising strength and creep resistance at temperatures >300 °C, and can be produced affordably using conventional casting and heat-treatment. The industrial applicability of Al-Sc-Zr alloys is limited, however, by the high cost of Sc, motivating the replacement of as much Sc as possible with other solute elements, such as Erbium. Erbium offers a cost-effective alternative to Sc, and improves Al-Sc-Zr creep resistance by enhancing elastic interactions with dislocations.

My project involves the optimization of both the chemical composition and heat-treatment of Al-Zr-Sc-Er alloys to develop Al alloys capable of use in existing automotive and aerospace applications in the 200-400 °C temperature range. The effect of substituting Er for Sc on strength and precipitate evolution is studied by microhardness, electrical conductivity, atom-probe tomography (APT), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-temperature tensile and compressive testing.

Research

Coarsening Resistant Al-Zr-Sc-Er Alloys for High-Temperature Structural Applications

Education

PhD, Northwestern University

Contact

Phone: 847.461.5883
Fax: 847.467.2269
e-mail: c-booth(@northwestern.edu)
Address: Materials Science & Eng
2220 Campus Drive
Evanston, IL 60208

Publications

  1. C. Booth-Morrison, Y. Zhou, R. D. Noebe, and D. N. Seidman, "On the nanometer scale phase separation of a low-supersaturation Ni-Al-Cr alloy". Phil. Mag. 2010;90;219-235
  2. Y. Amouyal, Z. Mao, C. Booth-Morrison, and D. N. Seidman, “On the interplay between tungsten and tantalum in Ni-based superalloys: An atom-probe tomographic and first-principles study”. Applied Physics Letters. 2009;94:041917.
  3. C. Booth-Morrison, R. D. Noebe, and D. N. Seidman, “Effects of tantalum on the temporal evolution of a model Ni-Al-Cr superalloy during phase decomposition”. Acta Materialia. 2009;57;909-920.
  4. Y. Zhou, C. Booth-Morrison, and D. N. Seidman, “On the field-evaporation behavior of a model Ni-Al-Cr superalloy studied by picosecond pulsed-laser atom probe tomography” Microscopy & Microanalysis. 2008;14;571-580.
  5. Y. Zhou, Z. Mao, C. Booth-Morrison, and D. N. Seidman, “The partitioning and site preference of rhenium or ruthenium in model Ni-based superalloys: An atom-probe tomographic and first-principles study”. Applied Physics Letters. 2008;93;171905.
  6. C. Booth-Morrison, Z. Mao, R. D. Noebe, and D. N. Seidman, “Chromium and tantalum site substitution patterns in Ni3Al (L12) γ’-precipitates”. Applied Physics Letters. 2008;93:033103.
  7. C. Booth-Morrison, J. Weninger, C. K. Sudbrack, Z. Mao, R. D. Noebe, and D. N. Seidman, “Effects of solute concentrations on the kinetic pathways in Ni-Al-Cr alloys”. Acta Materialia. 2008;56:3422-3438.

 

January 14, 2011