Carnegie Mellon University

Anthony D. Rollett

Anthony D. Rollett

U.S. Steel Professor of Metallurgical Engineering & Materials Science and Faculty Co-Director, Next Manufacturing Center

Address
Department of Materials Science and Engineering
Carnegie Mellon University
5000 Forbes Avenue
Pittsburgh, PA 15213-3890

Bio

Research Areas: Computational Materials Science | Manufacturing & Materials Microstructure

Rollett has been a member of the faculty at Carnegie Mellon University since 1995, including five years as Department Head. He is the Co-Director of the NextManufacturing Center on additive manufacturing. Previously, he worked at the Los Alamos National Laboratory. There, he was Group Leader of Metallurgy 1991-1994 and Deputy Division Director of Materials Science & Technology for a year after that. He has been a Fellow of ASM since 1996, Fellow of the Institute of Physics (UK) since 2004 and Fellow of TMS since 2011. He received the Cyril Stanley Smith Award from TMS in 2014, was elected as Member of Honor by the French Metallurgical Society in 2015, and became the US Steel Professor of Metallurgical Engineering and Materials Science in 2017. He received Cyril Stanley Smith Award from the International Conference on Recrystallization and Grain Growth in 2019 and also the International Francqui Professor for 2020-2021, from the Francqui Foundation, Belgium. His research group is supported by industry, several Federal research agencies, and the Commonwealth of Pennsylvania. He is a member of the Basic Energy Science Advisory Committee and the Defense Programs Advisory Committee under the Dept. of Energy. His lecture notes on texture and anisotropy are widely known and used and he started a new course on Additive Manufacturing and Materials in 2016. He started a new Masters program in Additive Manufacturing in the Fall of 2018.

Education

M.A., Cambridge University (UK)
Ph.D., Drexel University

Research

Rollett's research focuses on microstructural evolution and microstructure-property relationships in 3D, using both experiments and simulations. Interests include 3D printing of metals, materials for energy conversion systems, strength of materials, constitutive relations, microstructure, texture, anisotropy, grain growth, recrystallization, formability and stereology. Relevant techniques include high performance spectral methods in micro-mechanics, dynamic x-ray radiography (DXR) and high energy diffraction microscopy (HEDM). Important recent results include definition of process windows in 3D printing through characterization of porosity, 3D comparisons of experiment and simulation for plastic deformation in metals, the appearance of new grains during grain growth, and grain size stabilization. He has 250 peer-reviewed journal publications with an h-index of over 50.

Publications

C Zhao, ND Parab, X Li, K Fezzaa, W Tan, AD Rollett, T Sun, Critical instability at moving keyhole tip generates porosity in laser melting, Science 370 (6520), 1080-1086, 2020.

Z Wu, D Basu, JLL Meyer, E Larson, R Kuo, J Beuth, A Rollett, Study of Powder Gas Entrapment and Its Effects on Porosity in 17-4 PH Stainless Steel Parts Fabricated in, Laser Powder Bed Fusion, JOM, 1-12, 2020.

T Sun, W Tan, L Chen, A Rollett, In situ/operando synchrotron x-ray studies of metal additive manufacturing, MRS Bulletin 45 (11), 927-933, 2020.

R Jiang, A Mostafaei, Z Wu, A Choi, PW Guan, M Chmielus, AD Rollett, Effect of heat treatment on microstructural evolution and hardness homogeneity in laser powder bed, fusion of alloy 718, Additive Manufacturing 35, 101282, 2020.

JJ Bhattacharyya, S Nair, DC Pagan, V Tari, AD Rollett, SR Agnew, In-situ high energy X-ray diffraction study of the elastic response of a metastable β-titanium alloy, Acta Materialia 197, 300-308, 2020.

Honors

  • Member of Honor of the French Metallurgical Society in 2015
  • Cyril Stanley Smith award from TMS in 2014
  • Chercheur d'Excellence (Outstanding Researcher) at the University of Lorraine in Metz, France in 2012
  • Brahm Prakash Professor at the Indian Institute of Science (Bangalore) in 2011
  • Fellow of TMS in 2011
  • Fellow of the Institute of Physics (UK) in 2004
  • Howe Medal (Best Paper in Metallurgical & Materials Transactions) in 2004
  • Fellow of ASM-International in 1996
  • Award for Technology Transfer from the Federal Laboratories Consortium in 1989