Senior Scientist
Senior Scientist

Biography

Dr. Ayoub Soulami is a senior computational materials scientist and team leader for the Materials Dynamics team in the Energy and Environment Directorate at Pacific Northwest National Laboratory. His research focuses on understanding inter-relationships between microstructure, processing, and material performance using Integrated Computational Materials Engineering (ICME) tools—and thus maintaining strong collaboration with experimental and characterization teams.

His interests include multiscale modeling, constitutive behavior of metals, and alloys subjected to various industrial processes, such as sheet metal forming, joining, extrusion, rolling, and solid phase processing. His current work focuses on applying the mechanics and materials basic principles in solving practical engineering problems, including projects on modeling of joining, solid phase processing, and the development of ICME and machine learning tools to guide material development and processing.

He is currently leading projects and tasks with funding predominantly from the Solid Phase Processing Science Initiative, the Department of Energy’s Office of Energy Efficiency and Renewable Energy, Vehicle Technology Office, and the National Nuclear Security Administration.

Research Interest

  • ICME
  • Multi-scale modeling of materials and processing
  • Smoothed Particles Hydrodynamics
  • Finite Element Analysis
  • Lightweight materials (aluminum, magnesium, etc.)
  • Advanced manufacturing processes (solid phase processing, forming, and multi-material manufacturing and joining)
  • Physics Informed Machine Learning

Education

  • PhD in Computational Materials Science, University of Lorraine
  • MS in Mechanical Processing and Material Science, University of Lorraine
  • BS in Mathematics/Computer Science, University of Lorraine

Affiliations and Professional Service

  • The Minerals Society
  • American Society of Mechanical Engineers

Publications

2022

  • S Li, L Li, A Soulami, CA Powell, S Mathaudhu, A Devaraj, C Wang, 2022. “In-situ observation of deformation twin associated sub-grain boundary formation in copper single crystal under bending” Materials Research Letters 10 (7), 488-495
  • Daniel Ramirez-Tamayo, Ayoub Soulami, Varun Gupta, David Restrepo, Arturo Montoya, Ethan Nickerson, Timothy Roosendaal, Kevin Simmons, Gayaneh Petrossian, Harry Millwater, 2022. “A complex-variable finite element method-based inverse methodology to extract constitutive parameters using experimental data” International Journal of Solids and Structures 243, 111545
  • Bharat Gwalani, Qin Pang, Anqi Yu, Wenkai Fu, Lei Li, Mayur Pole, Christian Roach, Suveen N. Mathaudhu, Tanvi Ajantiwalay, Mert Efe, Shenyang Hu, Miao Song, Ayoub Soulami, Aashish Rohatgi, Yulan Li, Peter V. Sushko, and Arun Devaraj, “Extended Shear Deformation of the Immiscible Cu–Nb Alloy Resulting in Nanostructuring and Oxygen Ingress with Enhancement in Mechanical Properties” ACS Omega 2022 7 (16), 13721-13736
  • WE Frazier, L Li, B Gwalani, J Silverstein, A Devaraj, A Soulami, P. V. Sushko, 2022 ”An Approach for the Microstructure-Sensitive Simulation of Shear-Induced Deformation and Recrystallization in Al–Si Alloys” Metallurgical and Materials Transactions A 53 (4), 1450-1461

2021

  • L Li, V Gupta, X Li, AP Reynolds, G Grant, A Soulami, 2021. “Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion” Computational Particle Mechanics, 1-21
  • Shuang Li, Matthew Olszta, Lei Li, Bharat Gwalani, Ayoub Soulami, Cynthia A Powell, Suveen Mathaudhu, Arun Devaraj, Chongmin Wang, 2022 “In-situ TEM observation of shear induced microstructure evolution in Cu-Nb alloy” Scripta Materialia 205, 114214
  • Shank S. Kulkarni, Varun Gupta, David Senor, Timothy Truster, Ayoub Soulami, Ram Devanathan, “A microstructure-based modeling approach to predict the mechanical properties of Zr alloy with hydride precipitates”, Computational Materials Science, Volume 197, 2021
  • Shank S. Kulkarni, Kyoo Sil Choi, Wenbin Kuang, Nalini Menon, Bernice Mills, Ayoub Soulami, Kevin Simmons, “Damage evolution in polymer due to exposure to high-pressure hydrogen gas”, International Journal of Hydrogen Energy, Volume 46, Issue 36, 2021, Pages 19001-19022,
  • Elizabeth J. Kautz, Sina Shahrezaei, Matthew Athon, Michael Frank, Alan Schemer-Kohrn, Ayoub Soulami, Curt Lavender, Vineet V. Joshi, Arun Devaraj. “Evaluating the microstructure and origin of nonmetallic inclusions in as-cast U-10Mo fuel”, Journal of Nuclear Materials, (2021), 152949,
  • Daniel Ramirez-Tamayo, Ayoub Soulami, Varun Gupta, David Restrepo, Arturo Montoya, Harry Millwater, “A complex-variable cohesive finite element subroutine to enable efficient determination of interfacial cohesive material parameters”. Engineering Fracture Mechanics, Volume 247, (2021)
  • Shank S Kulkarni, Timothy Truster, Hrishikesh Das, Varun Gupta, Ayoub Soulami, Piyush Upadhyay, Darrel Herling, 2021 “Microstructure-Based Modeling of Friction Stir Welded Joint of Dissimilar Metals Using Crystal Plasticity” Journal of Manufacturing Science and Engineering 143 (12)
  • Shank S Kulkarni, Hrishikesh Das, Daniel Ramírez Tamayo, Xiaolong Ma, Tianhao Wang, Dalong Zhang, Piyush Upadhyay, Kyoo Sil Choi, Ayoub Soulami, Darrell Herling. 2021 ”A combined experimental and modeling approach to investigate the performance of joint between AZ31 magnesium and uncoated DP590 steel using friction stir-assisted scribe technique” Journal of Materials Engineering and Performance 30 (11), 8296-8308
  • Tianhao Wang, Lei Li, Madhusudhan R. Pallaka, Hrishikesh Das, Scott Whalen, Ayoub Soulami, Piyush Upadhyay, Keerti S. Kappagantula, 2021 “Mechanical and microstructural characterization of AZ31 magnesium‑carbon fiber reinforced polymer joint obtained by friction stir interlocking technique” Materials & Design, Volume 198

2020

  • Bharat Gwalani, Matthew Olszta, Soumya Varma, Lei Li, Ayoub Soulami, Elizabeth Kautz, Siddhartha Pathak, Aashish Rohatgi, Peter V. Sushko, Suveen Mathaudhu, Cynthia A. Powell & Arun Devaraj. Extreme shear-deformation-induced modification of defect structures and hierarchical microstructure in an Al–Si alloy. (Nature) Communication Materials 1, 85 (2020).
  • Wang T., P. Upadhyay, M. Reza E Rabby, X. Li, L. Li, A. Soulami, and K.S. Kappagantula, et al. (2020). "Joining of Thermoset Carbon Fiber Reinforced Polymer and AZ31 Magnesium Alloy Sheet Via Friction Stir Interlocking." International Journal of Advanced Manufacturing Technology 109, no. 3-4:689-698.

2019

  • Spies K.A., V.V. Viswanathan, A. Soulami, Y. Hovanski, and V.V. Joshi. 2019. "GALVANICALLY GRADED INTERFACE: A COMPUTATIONAL MODEL FOR MITIGATING GALVANIC CORROSION BETWEEN MAGNESIUM AND MILD STEEL." In Magnesium Technology 2019. The Minerals, Metals & Materials Series, edited by V. Joshi, et al, 135-144. Cham:Springer. PNNL-SA-138734. doi:10.1007/978-3-030-05789-3_21 

2017

  • Soulami A., D. Burkes, V.V. Joshi, C.A. Lavender, and D.M. Paxton. 2017. "Finite-Element Model to Predict Roll-Separation Force and Defects During Rolling of U-10Mo Alloys." Journal of Nuclear Materials 494. PNNL-SA-128011. doi:10.1016/j.jnucmat.2017.07.006 

2016

2015

  • Hovanski Y., P. Upadhyay, J. Carsley, T. Luzanski, B. Carlson, M. Eisenmenger, and A. Soulami, et al. 2015. "High-Speed Friction-Stir Welding To Enable Aluminum Tailor-Welded Blanks." JOM. The Journal of the Minerals, Metals and Materials Society 67, no. 5:1045-1053. PNNL-SA-107526. doi:10.1007/s11837-015-1384-x 
  • Soulami A., C.A. Lavender, D.M. Paxton, and D. Burkes. 2015. Rolling Process Modeling Report: Finite-Element Model Validation and Parametric Study on Various Rolling Process Parameters. PNNL-24362. Richland, WA: Pacific Northwest National Laboratory. Rolling Process Modeling Report: Finite-Element Model Validation and Parametric Study on Various Rolling Process Parameters 

2014

  • Rohatgi A., A. Soulami, E.V. Stephens, R.W. Davies, and M.T. Smith. 2014. "An Investigation of Enhanced Formability in AA5182-O Al During High-Rate Fre-Forming at Room-Temperature: Quantification of Deformation History." Journal of Materials Processing Technology 214, no. 3:722-732. PNNL-SA-87055. doi:10.1016/j.jmatprotec.2013.07.015 
  • Rohatgi A., R.W. Davies, E.V. Stephens, A. Soulami, and M.T. Smith. 2014. "An Experimental and Modeling Investigation on High-Rate Formability of Aluminum." In Light Metals 2014, February 16-20, 2014, San Diego, California, edited by J Grandfield, 219-225. Hoboken, New Jersey:John Wiley & Sons. PNNL-SA-98651. doi:10.1002/9781118888438.ch38 
  • Soulami A., C.A. Lavender, D.M. Paxton, and D. Burkes. 2014. Rolling Process Modeling Report: Finite-Element Prediction of Roll Separating Force and Rolling Defects. PNNL-23313. Richland, WA: Pacific Northwest National Laboratory. Rolling Process Modeling Report: Finite-Element Prediction of Roll Separating Force and Rolling Defects 

2013

2012

  • Choi K., A. Soulami, D. Li, X. Sun, M.A. Khaleel, L. Xu, and F. Barlat. 2012. "Relationship between Material Properties and Local Formability of DP980 Steels." In SAE 2012 World Congress & & Exhibition, April 24, 2012, Detroit, Michigan, SAE Technical Paper 2012-01-0042. Warrendale, Pennsylvania:SAE International. PNNL-SA-84223. doi:10.4271/2012-01-0042 
  • Joshi V.V., E.A. Nyberg, A. Soulami, D.J. Edwards, A.Z. Chua, and C.A. Lavender. 2012. "In-Plane Compression and Tensile Testing of AZ31B Sheet and their Deformation Mechanisms." In 9th International Conference on Magnesium Alloys and their Applications, July 8-12, 2012, Vancouver, BC, Canada, edited by WJ Poole and KU Kainer. Warrendale, Pennsylvania:TMS. PNNL-SA-85705. 
  • Rohatgi A., E.V. Stephens, R.W. Davies, M.T. Smith, A. Soulami, and S. Ahzi. 2012. "Electro-Hydraulic Forming of Sheet Metals: Free-forming vs. Conical-die Forming." Journal of Materials Processing Technology 212, no. 5:1070-1079. PNNL-SA-82938. doi:10.1016/j.jmatprotec.2011.12.014 
  • Sun X., A. Soulami, K. Choi, O. Guzman, and W.W. Chen. 2012. "Effects of Sample Geometry and Loading Rate onTensile Ductility of TRIP800 Steel." Materials Science and Engineering. A. Structural Materials: Properties, Microstructure and Processing 541. PNNL-SA-85308. doi:10.1016/j.msea.2011.12.115 

2011

  • Choi K., A. Soulami, W.N. Liu, X. Sun, and M.A. Khaleel. 2011. "Loading Path Dependence of Forming Limit Diagram of a TRIP800 Steel." SAE International Journal of Materials and Manufacturing 4, no. 1:75-83. PNNL-SA-76736. doi:10.4271/2011-01-0019 
  • Rohatgi A., E.V. Stephens, A. Soulami, R.W. Davies, and M.T. Smith. 2011. "Experimental Characterization of Sheet Metal Deformation During Electro-Hydraulic Forming." Journal of Materials Processing Technology 211, no. 11:1824-1833. PNNL-SA-78155. doi:10.1016/j.jmatprotec.2011.06.005 
  • Soulami A., K. Choi, Y.F. Shen, W.N. Liu, X. Sun, and M.A. Khaleel. 2011. "On deformation twinning in a 17.5%Mn-TWIP steel: A physically-based phenomenological model." Materials Science and Engineering. A. Structural Materials: Properties, Microstructure and Processing 528, no. 3:1402-1408. PNNL-SA-74208. doi:10.1016/j.msea.2010.10.031 

2010

  • Choi K., A. Soulami, W.N. Liu, X. Sun, and M.A. Khaleel. 2010. "Effects of Retained Austenite Stability and Volume Fraction on Deformation Behaviors of TRIP Steels." In AIST Steel Properties and Applications Conference Proceedings - Combined with MS and T'10, Materials Science and Technology, October 17-21, 2010, 405-412. Warrendale, Pennsylvania:Association for Iron and Steel Technology. PNNL-SA-73403. 
  • Choi K., A. Soulami, W.N. Liu, X. Sun, and M.A. Khaleel. 2010. "Influence of Various Material Design Parameters on Deformation Behaviors of TRIP Steels." Computational Materials Science 50, no. 2:720-730. PNNL-SA-72448. doi:10.1016/j.commatsci.2010.10.002 
  • Liu W.N., K. Choi, A. Soulami, X. Sun, and M.A. Khaleel. 2010. "Effects of Forming Induced Phase Transformation on Crushing Behavior of TRIP Steel." In SAE 2010 World Congress& Exhibition, SP-2295, 21-28. Warrendale, Pennsylvania:SAE International. PNNL-SA-69951. doi:10.4271/2010-01-0216 
  • Rohatgi A., E.V. Stephens, A. Soulami, R.W. Davies, and M.T. Smith. 2010. "High-Strain-Rate Forming of Aluminum and Steel Sheets for Automotive Applications." In Proceedings of the International Deep Drawing Group Conference (IDDRG-2010 ), May 31-June 02, 2010, Graz, Austria. Brussels:International Deep Drawing Research Group. PNNL-SA-71641. 
  • Soulami A., K. Choi, W.N. Liu, X. Sun, M.A. Khaleel, Y. Ren, and Y. Wang. 2010. "Predicting Fracture Toughness of TRIP 800 using Phase Properties Characterized by In-Situ High Energy X-Ray Diffraction." Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science 41, no. 5:1261-1268. PNNL-SA-64916. 

2009

  • Choi K., A. Soulami, W.N. Liu, X. Sun, and M.A. Khaleel. 2009. "Applicability of a Micromechanics Model Based on Actual Microstructure for Failure Prediction of DP Steels." In SAE 2009 World Congress. Warrendale, Pennsylvania:SAE International. PNNL-SA-62646. 
  • Choi K., A. Soulami, W.N. Liu, X. Sun, and M.A. Khaleel. 2009. "Fracture Driven by Phase Inhomogeneity in Higher Grade Dual Phase Steels." In International Automotive Body Congress (IABC 2009), November 4-5, 2009, Troy, Michigan, 464-469. Ann Arbor, Michigan:Global Powertrain Congress. PNNL-SA-69013. 
  • Soulami A., K. Choi, W.N. Liu, X. Sun, and M.A. Khaleel. 2009. "Characterization of the Fracture Toughness of TRIP 800 Sheet Steels Using Microstructure-Based Finite Element Analysis." In Vehicle Sensors and Actuators, 2009. Detroit, Michigan:Society of Automotive Engineers. PNNL-SA-62930. 
  • Sun X., K. Choi, A. Soulami, W.N. Liu, and M.A. Khaleel. 2009. "On Key Factors Influencing Ductile Fractures of Dual Phase (DP) Steels." Materials Science and Engineering. A. Structural Materials: Properties, Microstructure and Processing 526, no. 1-2:140-149. PNNL-SA-67936. doi:10.1016/j.msea.2009.08.010 

2008

  • M Cherkaoui, A Soulami, A Zeghloul, MA Khaleel. 2008. “A phenomenological dislocation theory for martensitic transformation in ductile materials: From micro-to macroscopic description”. Philosophical Magazine 88 (30-32), 3479-3512