Mechanical Properties of Nanoporous Au: From Empirical Evidence to Phenomenological Modeling

Metals

Giorgio Pia¹  Francesco Delogu²  Eva Pellicer² 

[1] Dipartimento di Ingegneria Meccanica, Chimica, e dei Materiali, Università degli Studi di Cagliari, via Marengo 2, 09123 Cagliari, Italy; E-Mail

关键词: porous material;    nanostructured material;    metals and alloys;    elastic modulus;    yield strength;    modeling;   

DOI  :  10.3390/met5031665

来源: mdpi

【 摘 要 】

The present work focuses on the development of a theoretical model aimed at relating the mechanical properties of nanoporous metals to the bending response of thick ligaments. The model describes the structure of nanoporous metal foams in terms of an idealized regular lattice of massive cubic nodes and thick ligaments with square cross-sections. Following a general introduction to the subject, model predictions are compared with Young’s modulus and the yield strength of nanoporous Au foams determined experimentally and available in literature. It is shown that the model provides a quantitative description of the elastic and plastic deformation behavior of nanoporous metals, reproducing to a satisfactory extent the experimental Young’s modulus and yield strength values of nanoporous Au.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.