About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Self-organizing Nano-architectured Materials
|
Presentation Title |
Centimeter-scale Crack-free Self-assembly for Ultra-high Tensile Strength Metallic Nanolattices |
Author(s) |
Zhimin Jiang, James H. Pikul |
On-Site Speaker (Planned) |
Zhimin Jiang |
Abstract Scope |
Nanolattices exhibit extraordinary mechanical, energy conversion, and optical properties, but manufacturing challenges prevent them from being fabricated at cm-length scales or larger while maintaining the dense regular nm features that enable their properties. This work overcomes these limitations by realizing a crack-free self-assembly approach for cm-scale nickel nanolattices with a 20,000X increase in crack-free area and 1,000X more unit cells along mechanically loaded samples than prior self-assembled and 3D-printed nanolattices. These nickel nanolattices have 30 nm grains, 100 nm features, and 260 MPa tensile strengths, which are 3X the strength of all porous metals at the same relative density, approach the theoretical strength limit for porous nickel, and are 10X the strength of prior nanolattices. The new insights into self-assembly and porous metal mechanics developed in this work will advance the fabrication and applications of high-strength multifunctional porous materials. |
Proceedings Inclusion? |
Undecided |
Keywords |
Nanotechnology, Copper / Nickel / Cobalt, Mechanical Properties |