Design of alloys and (nano-) composites 

 

We develop novel structural and functional alloys as well as composites by combining computer simulations with sophisticated experiments. A special emphasize is on the design of alloys for additive manufacturing. Our activities cover mainly, but not exclusively, the following materials classes:

  • High-strength Ni, Al and Ti alloys and structural intermetallics (e.g γ-TiAl)

  • Oxide dispersion strengthened (ODS) alloys and (nano-) composites

  • Precious metal alloys

  • Shape memory alloys

 

 

 

Key publications

 

  • M. Schuster, A. De Luca, D. Kucajda, E. Hosseini, R. Widmer, X. Maeder, C. Leinenbach, Heat treatment response and mechanical properties of a Zr-modified AA2618 aluminum alloy fabricated by laser powder bed fusion, Journal of Alloys and Compounds. 962 (2023) 171166. 

  • A. Jafarabadi, I. Ferretto, M. Mohri, C. Leinenbach, E. Ghafoori, 4D Printing of Recoverable Buckling-Induced Architected Iron-based Shape Memory Alloys, Materials & Design. (2023) 112216

  • A. De Luca, C. Kenel, D.C. Dunand, C. Leinenbach, Effect of HfO2 dispersoids on the microstructure of a Ni-Cr-Al-Ti superalloy processed by laser-based powder-bed fusion, Additive Manufacturing Letters. 6 (2023) 100139

  • M. Mohri, I. Ferretto, H. Khodaverdi, C. Leinenbach, E. Ghafoori, Influence of thermomechanical treatment on the shape memory effect and pseudoelasticity behavior of conventional and additive manufactured Fe–Mn–Si–Cr–Ni-(V,C) shape memory alloys, Journal of Materials Research and Technology. 24 (2023) 5922–5933

  • Y. Yang, C. Leinenbach, M. Shahverdi, Simulation and experimental characterization of VC precipitation and recovery stress formation in an FeMnSi-based shape memory alloy, Journal of Alloys and Compounds. 940 (2023) 168856

  • I. Ferretto, D. Kim, W.J. Lee, E. Hosseini, N.M. della Ventura, A. Sharma, C. Sofras, J. Capek, E. Polatidis, C. Leinenbach, Shape memory and mechanical properties of a Fe-Mn-Si-based shape memory alloy: Effect of crystallographic texture generated during additive manufacturing, Materials & Design. 229 (2023) 111928. https://doi.org/10.1016/j.matdes.2023.111928.

  • D. Kim, I. Ferretto, C. Leinenbach, W. Lee, W. Kim, Effect of direct aging on microstructure, mechanical properties and shape memory behavior of Fe-17Mn-5Si-10Cr-4Ni-(V, C) shape memory alloy fabricated by laser powder bed fusion, Materials Characterization. 197 (2023) 112705

  • I. Ferretto, A. Borzì, D. Kim, N.M.D. Ventura, E. Hosseini, W.J. Lee, C. Leinenbach, Control of microstructure and shape memory properties of a Fe-Mn-Si-based shape memory alloy during laser powder bed fusion, Additive Manufacturing Letters. 3 (2022) 100091

  • J.U. Rakhmonov, C. Kenel, A. De Luca, C. Leinenbach, D.C. Dunand, Effect of Y2O3 dispersoids on microstructure and creep properties of Hastelloy X processed by laser powder-bed fusion, Additive Manufacturing Letters. 3 (2022) 100069

  • M. Mohri, I. Ferretto, C. Leinenbach, D. Kim, D.G. Lignos, E. Ghafoori, Effect of thermomechanical treatment and microstructure on pseudo-elastic behavior of Fe–Mn–Si–Cr–Ni-(V, C) shape memory alloy, Materials Science and Engineering: A. 855 (2022) 143917

  • Y. Rao, C. Baruffi, A. De Luca, C. Leinenbach, W.A. Curtin, Theory-guided design of high-strength, high-melting point, ductile, low-density, single-phase BCC high entropy alloys, Acta Materialia. 237 (2022) 118132

  • D. Kim, I. Ferretto, W. Kim, C. Leinenbach, W. Lee, Effect of post-heat treatment conditions on shape memory property in 4D printed Fe–17Mn–5Si–10Cr–4Ni shape memory alloy, Materials Science and Engineering: A. 852 (2022) 143689

  • J.A. Glerum, A. De Luca, M.L. Schuster, C. Kenel, C. Leinenbach, D.C. Dunand, Effect of oxide dispersoids on precipitation-strengthened Al-1.7Zr (wt %) alloys produced by laser powder-bed fusion, Additive Manufacturing. 56 (2022) 102933

  • C. Kenel, A. De Luca, C. Leinenbach, D.C. Dunand, High-Temperature Creep Properties of an Additively Manufactured Y2O3 Oxide Dispersion-Strengthened Ni–Cr–Al–Ti γ/γ’ Superalloy, Advanced Engineering Materials. 24 (2022) 2200753

  • C. Sofras, J. Čapek, A. Arabi-Hashemi, C. Leinenbach, M. Frost, K. An, R.E. Logé, M. Strobl, E. Polatidis, Tailored deformation behavior of 304L stainless steel through control of the crystallographic texture with laser-powder bed fusion, Materials & Design. 219 (2022) 110789

  • I. Burda, K. Zweiacker, A. Arabi-Hashemi, P. Barriobero-Vila, A. Stutz, R. Koller, H. Roelofs, L. Oberli, M. Lembke, C. Affolter, C. Leinenbach, Fatigue crack propagation behavior of a micro-bainitic TRIP steel, Materials Science and Engineering: A. 840 (2022) 142898

  • C. Leinenbach, D. Eifler, Characterization of the cyclic deformation behaviour and fatigue crack initiation on titanium in physiological media by electrochemical techniques, International Journal of Materials Research. 95 (2004) 535–541

  • M. Schuster, A. De Luca, A. Mathur, E. Hosseini, C. Leinenbach, Precipitation in a 2xxx series Al-Cu-Mg-Zr alloy fabricated by laser powder bed fusion, Materials & Design. 211 (2021) 110131

  • A. De Luca, C. Kenel, J. Pado, S.S. Joglekar, D.C. Dunand, C. Leinenbach, Thermal stability and influence of Y2O3 dispersoids on the heat treatment response of an additively manufactured ODS Ni–Cr–Al–Ti γ/γ′ superalloy, Journal of Materials Research and Technology. 15 (2021) 2883–2898

  • C. Kenel, A. De Luca, S.S. Joglekar, C. Leinenbach, D.C. Dunand, Evolution of Y2O3 dispersoids during laser powder bed fusion of oxide dispersion strengthened Ni-Cr-Al-Ti γ/γ’ superalloy, Additive Manufacturing. 47 (2021) 102224

  • D. Kim, I. Ferretto, J.B. Jeon, C. Leinenbach, W. Lee, Formation of metastable bcc-δ phase and its transformation to fcc-γ in laser powder bed fusion of Fe–Mn–Si shape memory alloy, Journal of Materials Research and Technology. 14 (2021) 2782–2788

  • E. Polatidis, C. Sofras, C. Jan, A. Arabi-Hashemi, C. Leinenbach, M. Strobl, IUCr, Tailoring the TRIP effect of austenitic stainless steels with selective laser melting, Acta Crystallographica Section A: Foundations and Advances. 77 (2021) C217–C217

  • A. De Luca, C. Kenel, S. Griffiths, S.S. Joglekar, C. Leinenbach, D.C. Dunand, Microstructure and defects in a Ni-Cr-Al-Ti γ/γ’ model superalloy processed by laser powder bed fusion, Materials & Design. 201 (2021) 109531

  • S. Griffiths, H. Ghasemi-Tabasi, A. De Luca, J. Pado, S.S. Joglekar, J. Jhabvala, R.E. Logé, C. Leinenbach, Influence of Hf on the heat treatment response of additively manufactured Ni-base superalloy CM247LC, Materials Characterization. 171 (2021) 110815

  • Y. Yang, A. Arabi-Hashemi, C. Leinenbach, M. Shahverdi, Influence of thermal treatment conditions on recovery stress formation in an FeMnSi-SMA, Materials Science and Engineering: A. 802 (2021) 140694

  • S. Griffiths, H. Ghasemi Tabasi, T. Ivas, X. Maeder, A. De Luca, K. Zweiacker, R. Wrobel, J. Jhabvala, R.E. Logé, C. Leinenbach,  Combining Alloy and Process Modification for Micro-crack Mitigation in an Additively Manufactured Ni-base Superalloy, Additive Manufacturing 36 (2020) 101443
  • S. Griffiths, J. Croteau, M.D. Rossell, R. Erni, A. De Luca, N.Q. Vo, D.C. Dunand, C. Leinenbach, Coarsening- and Creep Resistance of Precipitation-Strengthened Al-Mg-Zr Alloys Processed by Selective Laser Melting, Acta Materialia 188 (2020) 192-202
  • J. Croteau; S. Griffiths; C. Leinenbach; C. Kenel, D. Seidman, D. Dunand, N. Vo , Microstructure and Mechanical Properties of Al-Mg-Zr Alloys Processed by Selective Laser Melting, Acta Materialia 153 (2018) 35-44
  • Arabi-Hashemi, W.J. Lee, A. Lis, C. Leinenbach, Recovery stress formation in FeMnSi based shape memory alloys: Impact of precipitates, texture and grain size, Materials and Design 139 (2018) 258-268
  • Kenel, G. Dasargyri, T. Bauer, C. Hauser, A.B. Spierings, G.J. Tatlock, C. Leinenbach, K. Wegener, Selective laser melting of an oxide dispersion strengthened (ODS) γ-TiAl alloy towards production of complex structures, Materials and Design 134 (2017) 81-90
  • M. Leparoux, L. Kollo, H. Kwon, K. Kallip, N.K. Babu, K.A. AlOgab, M.K. Talari, Solid State Processing of Aluminum Matrix Composites Reinforced with Nanoparticulate Materials, Re-view – Adv. Eng. Mater. 2018, 20, 1800401.
  • H. Kwon, A. Kawasaki, M. Leparoux, Mechanical behaviour of dual nanoparticle-reinforced aluminium alloy matrix composite materials depending on milling time, J. Comp. Mater. 2017, Vol. 51(25) 3557–3562
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