Projects per year
Abstract
Nanosized materials are known to have the ability to withstand ultralarge elastic strains (4-10%) and to have ultrahigh strengths approaching their theoretical limits. However, it is a long-standing challenge to harnessing their exceptional intrinsic mechanical properties in bulk forms. This is commonly known as "the valley of death" in nanocomposite design. In 2013, a breakthrough was made to overcome this challenge by using a martensitic phase transforming matrix to create a composite in which ultralarge elastic lattice strains up to 6.7% are achieved in Nb nanoribbons embedded in it. This breakthrough was enabled by a novel concept of phase transformation assisted lattice strain matching between the uniform ultralarge elastic strains (4-10%) of nanomaterials and the uniform crystallographic lattice distortion strains (4-10%) of the martensitic phase transformation of the matrix. This novel concept has opened new opportunities for developing materials of exceptional mechanical properties or enhanced functional properties that are not possible before. The work in progress in this research over the past six years is reported.
Original language | English |
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Article number | 1904387 |
Number of pages | 11 |
Journal | Advanced Materials |
Volume | 32 |
Issue number | 18 |
Early online date | 19 Sept 2019 |
DOIs | |
Publication status | Published - 1 May 2020 |
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Approaching near-ideal strength for bulk amorphous metals
Liu, Y. & Han, X.
15/06/19 → 31/12/23
Project: Research
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Bio-inspired design overcoming strength-toughness trade-off of composites
Yang, H., Yan, C., Zhang, J., Cui, L. & Ren, Y.
15/05/18 → 31/12/22
Project: Research
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Transformation Dual Phase Synergy for Unprecedented Superelasticity
Liu, Y., Liu, Z., Wang, Y. & Hao, S.
15/04/18 → 31/12/22
Project: Research