Erica Stevens

Hi, I'm Erica.

I am a fourth-year PhD candidate in the Chmielus Lab at the University of Pittsburgh (Pitt) in Materials Science and Engineering. I completed my Bachelor's degree at Pitt in 2015, also earning a degree through the University Honors College requiring a Master's-level thesis. My long-term career goals are focused on microscopy in materials science and lab management.

My topic experience includes additive manufacturing of metals and multifunctional materials, particularly Ni-Mn-based magnetic shape memory alloys and magnetocaloric materials.

Equipment skills

Microscopy is my passion. I am most familiar with digital optical microscopy, scanning electron microscopy (including energy-dispersive x-ray spectroscopy and electron backscatter diffraction), and micro-computed tomography; but I have also used transmission electron microscopy, differential interference contrast microscopy, and atomic force microscopy.

The fusion of art and science that can be seen through a microscope is unparalleled by any I have ever experienced. Microscopy is a multi-faceted tool giving us the ability to probe previously unseen mysteries and share our findings through universally relatable images. Microscopy is also the reason my job is so much fun.

Involvement

I have been a part of many organizations over my years at Pitt as an undergraduate and now as a graduate student. I am currently the Secretary and Past-President of the Engineering Graduate Student Organization (EGSO), Counselor for the Pitt Society of Women Engineers (PittSWE), Area 34 Director for District 13 Toastmasters, and President-Elect for the Microscopy Society of America Student Council

As President of EGSO, I worked with the VP to completely restructure the organization and increase the amount/quality of our events. My role in PittSWE is a consulting one currently, but I was VP my senior year. Toastmasters is a public speaking and leadership organization. I have been in the Oakland Toastmasters club since the 2012, and served as club VP Public Relations and President in addition to my current role as Area 34 Director. In August, I will transition to President of the Microscopy Society of America Student Council, coordinating a board of officers from all over the nation (and a few internationally) to conduct programming for student MSA members throughout the year as well as a pre-meeting congress for student, post-docs, and young career professionals at the Microscopy & Microanalysis annual meeting.

Publications

[1]   Y. Jung, E. Stevens, B. Ding, S.-D. Kim, S.-K. Woo, and J.-K. Lee, “Microstructure and electrical conductivity in shape and size controlled molybdenum particle thick film,” J. Mater. Sci., vol. 48, no. 10, pp. 3760–3768, Feb. 2013.

[2]  T. Gao, E. Stevens, J. Lee, and P. W. Leu, “Designing metal hemispheres on silicon ultrathin film solar cells for plasmonic light trapping,” Opt. Lett., vol. 39, no. 16, pp. 4647–4650, 2014.

[3]   B. Wang, E. Stevens, and P. W. Leu, “Strong broadband absorption in GaAs nanocone and nanowire arrays for solar cells.,” Opt. Express, vol. 22 Suppl 2, no. S2, pp. A386-95, Mar. 2014.

[4]   A. Mostafaei, Y. Behnamian, Y. L. Krimer, E. L. Stevens, J. L. Luo, and M. Chmielus, “Brief data overview of differently heat treated binder jet printed samples made from argon atomized alloy 625 powder,” Data Br., vol. 9, pp. 556–562, 2016.

[5]   E. Stevens, J. Toman, K. Kimes, V. Chernenko, A. Wojcik, W. Maziarz, and M. Chmielus, “Microstructural Evaluation of Magnetocaloric Ni-Co-Mn-Sn Produced by Directed Energy Deposition,” Microsc. Microanal., vol. 22, no. S3, pp. 1774–1775, 2016.

[6]   A. Mostafaei, Y. Behnamian, Y. L. Krimer, E. L. Stevens, J. L. Luo, and M. Chmielus, “Effect of solutionizing and aging on the microstructure and mechanical properties of powder bed binder jet printed nickel-based superalloy 625,” Mater. Des., vol. 111, pp. 482–491, 2016.

[7]   A. Mostafaei, E. Stevens, E. Hughes, S. Biery, C. Hilla, and M. Chmielus, “Powder bed binder jet printed alloy 625: densification, microstructure and mechanical properties,” Mater. Des., vol. 108, pp. 126–135, 2016.

[8]   E. L. Stevens, J. Toman, A. C. To, and M. Chmielus, “Variation of hardness, microstructure, and Laves phase distribution in direct laser deposited alloy 718 cuboids,” Mater. Des., 2017.

[9]   A. Mostafaei, J. Toman, E. L. Stevens, E. T. Hughes, Y. L. Krimer, and M. Chmielus, “Microstructural evolution and mechanical properties of differently heat-treated binder jet printed samples from gas-and water-atomized alloy 625 powders,” Acta Mater., vol. 124, pp. 280–289, 2017.

[10]  A. Mostafaei, K. A. Kimes, E. L. Stevens, J. Toman, Y. L. Krimer, K. Ullakko, and M. Chmielus, “Microstructural evolution and magnetic properties of binder jet additive manufactured Ni-Mn-Ga magnetic shape memory alloy foam,” Acta Mater., 2017.

[11]  A. Mostafaei, E. T. Hughes, C. Hilla, E. L. Stevens, and M. Chmielus, “Data on the densification during sintering of binder jet printed samples made from water- and gas-atomized alloy 625 powders,” Data Br., vol. 10, pp. 116–221, 2017.

[12] N. R. Overman, S. A. Whalen, M. E. Bowden, M. J. Olszta, K. Kruska, T. Clark, E. L. Stevens, J. T. Darsell, V. V Joshi, X. Jiang, K. F. Mattlin, and S. N. Mathaudhu, “Materials Science & Engineering A Homogenization and texture development in rapidly solidi fi ed AZ91E consolidated by Shear Assisted Processing and Extrusion ( ShAPE ),” Mater. Sci. Eng. A, vol. 701, no. June, pp. 56–68, 2017.

[13] C. H. Henager, W. Setyawan, J. Timothy, N. R. Overman, B. A. Borlaug, E.L. Stevens, K. B. Wagner, R. J. Kurtz, G. R. Odette, B. N. Nguyen, and K. H. Cunningham, “Ductile-phase toughened plasma-facing materials in fusion reactors,” Int. J. Powder Metall., vol. 53, no. 2, pp. 53–69, 2017.

[14] A. Mostafaei, E.L. Stevens, J.J. Ference, D.E. Schmidt, M. Chmielus, "Binder jet printing of partial denture framework from metal powder", Mater. Sci. Technol., pp. 289-291, 2017. http://dx.doi.org/10.7449/2017/mst_2017_289_291

[15] J. Liu, E.L. Stevens, Q.C. Yang, M. Chmielus, A.C. To, “An analytical model of the melt pool and single track in coaxial laser direct metal deposition (LDMD) additive manufacturing”, Journal of Micromechanics and Molecular Physics, 2 (2017), 1750013, https://doi.org/10.1142/S2424913017500138

[16] E.L. Stevens, J. Toman, A. To, M. Chmielus, “Variation of hardness, microstructure, and Laves phase distribution in direct laser deposited alloy 718 cuboids”, Journal of Materials and Design, 119 (2017), 188-198,  http://dx.doi.org/10.1016/j.matdes.2017.01.031

[17] A. Mostafaei, K.A. Kimes, E.L. Stevens, J. Toman, Y.L. Krimer, K. Ullakko, M. Chmielus, "Microstructural evolution and magnetic properties of binder jet additive manufactured Ni-Mn-Ga magnetic shape memory alloy foam", Acta Materialia, 131 (2017) 482-490. http://dx.doi.org/10.1016/j.actamat.2017.04.010

[18] E. Stevens, S. Schloder, E. Bono, D. Schmidt, and M. Chmielus, “Density variation in binder jetting 3D-printed and sintered Ti-6Al-4V,” Additive Manufacturing, 22 (2018), 746-752, http://doi.org/10.1016/j.addma.2018.06.017

[19] A. Mostafaei, C. Hilla, E.L. Stevens, P. Nandwana, A.M. Elliot, M.Chmielus, “Comparison of characterization methods for differently atomized nickel-based alloy 625 powders”, Powder Technology, 333 (2018), 180- 92, https://doi.org/10.1016/j.powtec.2018.04.014

[20] E. Stevens, J. Barnes, M. Chmielus, “Using Micro-Computed Tomography to Investigate Powder Distribution Trends Within 3D Binder-Jet Printed SS316 Parts” Microscopy and Microanalysis, 24, S1 (2018), 1004-1005, https://doi.org/10.1017/S1431927618005512

[21] A. Mostafaei, P. Rodriguez, E.L. Stevens, M.Chmielus, “Sintering regimes and resulting microstructure and properties of binder jet 3D printed Ni-Mn-Ga magnetic shape memory alloys”, Acta Materialia, 154 (2018), 355-364, https://doi.org/10.1016/j.actamat.2018.05.047

[22] E. Stevens, K. Kimes, V.A. Chernenko, A. Wojcik, W. Maziarz, M. Chmielus, “Direct Laser Deposition and Homogenization of Ni-Co-Mn-Sn Magnetocaloric Material” Microscopy and Microanalysis, 24, S1 (2018), 956-957, https://doi.org/10.1017/S1431927618005275

[23] A. Mostafaei, E.L. Stevens, J.J. Ference, D.E. Schmidt, M. Chmielus, “Binder jetting of a complex-shaped metal partial denture framework” Additive Manufacturing, 21 (2018), 63-68, https://dx.doi.org/10.1016/j.addma.2018.02.014

Presentations

[1]  J. Toman, E. Stevens (UG), P. Zhang, A. To, M. Chmielus, “Effects of Process Parameters on Microstructure and Mechanical Properties of Inconel 718 processed by Laser Engineered Net Shaping”, TMS 2015, Orlando, FL, March 15 (2015), talk.

[2]  A. Mostafaei, E. Stevens (UG), C. Hilla UG, A. To, M. Chmielus, “Effect of powder and production parameters on the properties of Inconel 625 parts produced by powder bed binder jet printing”, MS&T 2015, Columbus, OH, October 4-8 (2015), poster.

[3]   E. Stevens, J. Toman, K. Kimes, V. Chernenko, A. Wojcik, W. Maziarz, M. Chmielus, "Microstructural Evaluation of Magnetocaloric Ni-Co-Mn-Sn Produced by Directed Energy Deposition”, Microscopy & Microanalysis, Columbus, OH, July 24-28 (2016), poster.

[4]   A. Mostafaei, E. Stevens, M. Chmielus, “The effect of aging treatment on mechanical properties of powder-bed binder-jet printed alloy 625 nickel superalloy parts”, MS&T 2016, Salt Lake City, UT, October 23-27 (2016), talk. Received TMS travel scholarship.

[5]  M. Chmielus, E. Stevens, Y. Krimer, A. Mostafaei, J. Toman, “Additive Manufacturing of Heusler Alloys”, MS&T 2016, Salt Lake City, UT, October 23-27 (2016), talk.

[6]   E. Stevens, K. Kimes, J. Toman, A. Wojcik, W. Maziarz, V. Chernenko, M. Chmielus, “Expanding the possibilities for magnetocaloric materials with additive manufacturing: an exploratory study”, WE Local, Pittsburgh, PA, February 17-19 (2017), poster, received first place for graduate poster.

[7]  E. Stevens, J. Toman, K. Kimes, C. Hilla, E. Hughes, M. Chmielus, “High temperature alloys and functional materials: Additive manufacturing projects in the Chmielus Lab”, MOST-AM meeting, Pittsburgh, PA, May 10 (2017), poster.

[8]  E. Stevens, J. Toman, K. Kimes, C. Hilla, E. Hughes, M. Chmielus, “High temperature alloys and functional materials: Additive manufacturing projects in the Chmielus Lab”, RAPID + TCT, Pittsburgh, PA, May 11 (2017), poster.

[9]  A. Mostafaei, E. Stevens, J. Toman, M. Chmielus, “Microstructure evolution and mechanical properties of binder jet printed nickel-based superalloy 625”, RAPID + TCT, Pittsburgh, PA, May 10 (2017), poster.

[10]  A. Mostafaei, C. Hilla, E. Stevens, K. Kimes, M. Chmielus, “Comparison of characterization methods for differently atomized nickel-based alloy 625 powders used in binder jet additive manufacturing”, RAPID + TCT, Pittsburgh, PA, May 10 (2017), poster.

[11]  M. Chmielus, E. Stevens, J. Toman, A. Mostafaei, “Additive Manufacturing of Magnetic Shape-Memory Alloys and Magnetocaloric Materials: An Overview”, ICOMAT 2017, Chicago, IL, July 9–14 (2017), invited talk.

[12]  A. Mostafaei, J. Toman, E. Stevens, M. Chmielus, “Effect of surface roughness on the low- and high-cycle fatigue behavior of binder jet printed nickel-based alloy 625”, MS&T 2017, Pittsburgh, PA, October 8-12 (2017), talk.

[13]  A. Mostafaei, E. Stevens, J. J. Ference, M. Chmielus, “Binder Jet printing of partial denture metal framework from metal powder”, MS&T 2017, Pittsburgh, PA, October 8-12 (2017), poster.

[14]   C. Hilla, A. Mostafaei, E. Stevens, M. Chmielus, “Characterization of differently atomized powder using micro computed x-ray tomography for additive manufacturing of alloy 625”, MS&T 2017, Pittsburgh, PA, October 8-12 (2017), talk.

[15]  M. Chmielus, E. Stevens, K. Kimes, A. Mostafaei, J. Toman, “Additive Manufacturing and Processing of Functional Magnetic Materials”, MS&T 2017, Pittsburgh, PA, Oct 8-12 (2017) talk.

[16]  K. Kimes, E. Stevens, A. Mostafaei, J. Toman, M. Chmielus, “Binder Jet Additive Manufacturing of Magnetocaloric Foams”, MS&T 2017, Pittsburgh, PA, Oct 8-12, (2017) talk.

[17] E. Stevens, K. Kimes, A. Wojcik, W. Maziarz, J. Toman, M. Chmielus, V. Chernenko, “Characterization of Direct Laser Deposited Magnetocaloric Ni-Co-Mn-Sn”, MS&T 2017, Pittsburgh, PA, October 8-12 (2017), poster. Extended abstract in proceedings.

[18] E. Stevens, K. Kimes, V. Chernenko, P. Lazpita, A. Wojcik, W. Maziarz, M. Chmielus, “Characterization of Direct Laser Deposited Magnetocaloric Ni-Co-Mn-Sn” ASM Young Members Night, Pittsburgh, PA, February 15 (2018), poster (3rd place graduate posters).

[19] E. Stevens, K. Kimes, V. Chernenko, P. Lazpita, A. Wojcik, W. Maziarz, M. Chmielus, “Direct Laser Deposition and Homogenization of Ni-Co-Mn-Sn Magnetocaloric Material” Microscopy and Microanalysis 2018, Baltimore, MD, August 5-9 (2018) oral.

[20] E. Stevens, J. Barnes, M. Chmielus, “Using Micro-Computed Tomography to Investigate Powder Distribution Trends Within 3D Binder-Jet Printed SS316 Parts”, Microscopy and Microanalysis 2018, Baltimore, MD, August 5-9 (2018), poster.

[21] E. Stevens, S. Schloder, E. Bono, D. Schmidt, M. Chmielus, “Density variation in binder jetting 3D-printed and sintered Ti-6Al-4V”, Materials Science and Technology 2018, Columbus, OH, October 14-18 (2018), poster.

[22] E. Stevens, A. Mostafaei, M. Chmielus, "Binder Jet 3D Printing of Metamagnetic Ni-Mn-based Alloys for Magnetocaloric Applications", IMECE2018 conference, Pittsburgh, PA, November 9-15 (2018) oral.

[23] E. Stevens, K. Kimes, D. Salazar, R. Rodriguez, A. Acierno, P. Lazpita, V. Chernenko, M. Chmielus, “Magnetocaloric properties in additive manufactured Ni-Mn-Ga-Cu”, TMS Annual Meeting 2019, San Antonio, TX, March 10-14 (2019) oral, accepted.

[24] R. Rodriguez De Vecchis, E. Stevens, M. Chmielus, “Magnetocaloric Effect of Sintered Binder Jet 3D Printed Ni-Mn-Ga-Cu for Efficient Magnetic Refrigeration”, TMS Annual Meeting 2019, San Antonio, TX, March 10-14 (2019) poster, accepted.

[25] A. Mostafaei, P. Rodriguez de Vecchis, E. Stevens, R. Rodriguez De Vecchis, M. Chmielus, “Sintering and densification kinetics of binder jet 3D printed structural and functional materials”, TMS Annual Meeting 2019, San Antonio, TX, March 10-14 (2019) oral, accepted.

Awards and Achievements

Honor Date Awarded by
NSF Graduate Research Fellowships Program (GRFP) Honorable Mention 2016 National Science Foundation
ASM Young Member’s Night graduate poster contest, 1st place Feb. 18, 2016 American Society for Metals (ASM)
National Defense Science & Engineering Graduate (NDSEG) Fellowship 2017 US Department of Defense
WE Local graduate poster contest, 1st place Feb. 2017 Society of Women Engineers
MEMS/EGSO Travel Grant for MS&T 2017 conference May 2017 Pitt MEMS Dept / Engr. Grad Student Org.
TMS Travel Scholarship for MS&T 2017 conference April 2017 The Minerals, Metals, and Materials Soc.
GPSG Travel Grant for ICOMAT 2017 conference Sept. 2017 Pitt Grad and Professional Student Govt
ASM Young Member’s Night graduate poster contest, 3rd place Feb. 15, 2018 American Society for Metals (ASM)
Josephine and John McCloskey Memorial Grant, for research in Spain Feb. 2018 Pitt Nationality Rooms Scholarships
Microscopy & Microanalysis 2018 Thurs. poster contest, Physical Sciences Aug. 9, 2018 Microscopy Society of America
ASM Young Members’ Night graduate poster contest, 3rd place Feb. 21, 2018 American Society for Metals (ASM)
Advanced Communicator Silver 2018 Toastmasters International
Advanced Leader Bronze 2018 Toastmasters International
Dynamic Leader, Level 4 2018 Toastmasters International

 

Other Skills

  • Unofficially tested into A2 fluency for German
  • Leadership of small and large teams
  • Communication to technical and non-technical audiences
  • Amateur photography and photo editing

 

Recent Extracurricular Involvement (more details!)

2014-2015 Vice President, Pitt Society of Women Engineers UG
2014-2015 Vice President Public Relations, Oakland Toastmasters UG
2015-2016 President, Oakland Toastmasters (club achieved Select Distinguished status)
2015-2017 MEMS Department Representative, Engineering Graduate Student Organization
2015-2018 Counselor, Pitt Society of Women Engineers
2016-2017 Secretary, Engineering Graduate Student Organization
2016-2018 Vice President Public Relations, Oakland Toastmasters
2017-2018 SSOE US Steel Dean Search Committee
2017-2018 President, Engineering Graduate Student Organization
2017-2018 Regional Liaison Chair, Microscopy Society of America Student Council
2017-2018 Assistant Area 34 Director in District 13, Toastmasters International
2018-2019 Area 34 Director in District 13, Toastmasters International
2018-2019 President-Elect, Microscopy Society of America Student Council
2018-2019 Secretary, Engineering Graduate Student Organization
2013-present Member, Material Advantage
2015-present Member, Microscopy Society of America
2016-present Member, Microanalysis Society
2014-present Member, Tau Beta Pi engineering honors society
2012-present Member, Phi Sigma Rho engineering social sorority
2012-present Member, Changing Health, Attitudes, and Actions to Recreate Girls
Annually Volunteer, Pitt Society of Women Engineers engineering outreach events