• Metals Nanomanufacturing
  • Lightweight and Novel Metals
  • In-situ Microstructure Characterization

Metals Nanomanufacturing

Metals Nanomanufacturing

Investigator: Lianyi Chen

Funding source: National Science Foundation

Project description:

This research integrates nanotechnology and metals processing (metals nanoprocessing) to develop advanced materials processing technologies to incorporate nanoelements (nanoparticles, nanowires, and nanosheet) into metals and control their dispersion and distribution in metal matrices. This research also strives to reveal the mechanisms and establish the approaches of using stable ex-situ nanoelements to control microstructure evolution of traditional alloys during solidification and thermo-mechanical processing to improve their processability (e.g., eliminating hot cracking, restricting grain growth, reducing segregation).

Representative publications:

L.Y. Chen, J.Q. Xu, X.C. Li, Controlling phase growth during solidification by nanoparticles, Materials Research Letters, 3, 43 (2015).

L.Y. Chen, J.Q. Xu, H. Choi, H. Konishi, S. Jin, X.C. Li, Rapid control of phase growth by nanoparticles, Nature Communications, 5, 3879 (2014).

L.Y. Chen, J.Y. Peng, J.Q. Xu, H. Choi, X.C. Li, Achieving uniform distribution and dispersion of a high percentage of nanoparticles in metal matrix nanocomposites by solidification processing, Scripta Materialia, 69, 634 (2013).

L.Y. Chen, H. Konishi, A. Fehrenbacher, C. Ma, J.Q. Xu, H. Choi, H.F. Xu, F. Pfefferkorn, X.C. Li, Novel nanoprocessing route for bulk graphene nanoplatelets reinforced metal matrix nanocomposites, Scripta Materialia, 67, 29 (2012).

L.Y. Chen, D. Weiss, J. Morrow, J.Q. Xu, X.C. Li, A novel manufacturing route for production of high-performance metal matrix nanocomposites, Manufacturing Letters, 1, 62 (2013).

Lightweight and Novel Metals

Lightweight and Novel Metals

Investigator: Lianyi Chen

Funding source: N/A

Project summary:

Lightweight and novel metals play a key role in improving energy efficiency and enhancing system performance of various systems. This research aims to develop ultrahigh-performance metallic materials and their manufacturing processes for aerospace, automotive, energy and defense applications.

Representative publications:

L.Y. Chen, J.Q. Xu, H. Choi, M. Pozuelo, X.L. Ma, S. Bhowmick, J.M. Yang, S. Mathaudhu, X.C. Li, Processing and properties of magnesium containing a dense uniform dispersion of nanoparticles, Nature, 528, 539 (2015).

L.Y. Chen, Z.D. Fu, G.Q. Zhang, X.P. Hao, Q.K. Jiang, H. Franz, Y.G. Liu, H.S. Xie, S.L. Zhang, B.Y. Wang, Y.W. Zeng, J.Z. Jiang, New class of plastic bulk metallic glass, Physical Review Letters, 100, 075501 (2008).

L. Yang, G.Q. Guo, L.Y. Chen, C.L. Huang, T. Ge, D. Chen, K. Saksl, Y. Ren, Q.S. Zeng, B. LaQua, F.G. Chen, and J.Z. Jiang, Atomic-scale mechanisms of the glass-forming ability in metallic glasses, Physical Review Letters, 109, 105502 (2012).

L.Y. Chen, Q. Ge, S. Qu, Q.K. Jiang, X.P. Nie, J.Z. Jiang, Achieving large compressive plastic strain and work-hardening-like behavior in a monolithic bulk metallic glass by tailoring stress distribution, Applied Physics Letters, 96, 211905 (2008).

L.Y. Chen, A.D. Setyawan, H. Kato, A. Inoue, J. Saida, X.D. Wang, Q.P. Cao, J.Z. Jiang, Free volume induced enhancement of plasticity in a monolithic bulk metallic glass, Scripta Materialia, 59, 75 (2008).

L.Y. Chen, Q. Ge, S. Qu, J.Z. Jiang, Stress induced softening and hardening in a bulk metallic glass, Scripta Materialia, 59, 1210 (2008).

In-situ Microstructure Characterization

In-situ Microstructure Characterization

Investigator: Lianyi Chen

Funding source: N/A

Project summary:

This research aims to characterize the microstructure evolution of materials during processing or under loading by in situ x-ray scattering/imaging and in situ SEM and TEM to understand the fundamental mechanisms of processing and deformation.

Representative publications:

L.Y. Chen, B.Z. Li, X.D. Wang, F. Jiang, Y. Ren, P.K. Liaw, J.Z. Jiang, Atomic-scale mechanisms of tension-compression asymmetry in a metallic glass, Acta Materialia, 61, 1843 (2013).

J. Bednarcika, L.Y. Chen, X.D. Wang, J.Z. Jiang, H. Franz, Mapping the strain distributions in deformed bulk metallic glasses using hard x-ray diffraction, Metallurgical and Materials Transactions A, 43, 1558 (2012).

L. Yang, G.Q. Guo, L.Y. Chen, B. LaQua, J.Z. Jiang, Tuning local structures in metallic glasses by cooling rate, Intermetallics, 44, 94 (2014).