Advanced micromechanical characterization techniques for understanding materials behavior at the nanoscale

Date

2018-10-27

Author

Özerinç, Sezer
Motallebzadeh, Amir
Kalay, Yunus Eren

Metadata

Show full item record

Item Usage Stats

148
views

0
downloads

Mechanical properties of most new generation materials such as nanostructured metals, nanoporous materials, metallic glasses, and thin film coatings cannot be investigated by conventional uniaxial testing techniques because of geometrical restrictions. Recent developments in microfabrication techniques have enabled the production of microscale specimens that are analogous to the macroscale counterparts. Microcylinders, microcantilevers, microtensile specimens and many other geometries can now be fabricated effectively, and nanomechanical transducers with nm-level displacement and nN-level force resolution can be used to test these microspecimens. We investigated a number of different materials such as metallic glasses and thin film coatings through micropillar compression tests. We also manufactured microcantilever specimens for fracture testing of hard coatings. We manufactured these microspecimens using focused ion beam, and performed the tests using a nanoindenter equipped with a flat punch. We demonstrate that advanced micromechanical testing is a powerful tool for probing the mechanical behavior of new generation materials and thin films.

URI

http://immc.metem.org.tr/index.php/2016-03-03-13-14-44
https://hdl.handle.net/11511/76128

Conference Name

19th International Metallurgy and Materials Congress (25- 27 October 2018)

Collections

Department of Mechanical Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

An Electrochemical Procedure to Form Metal Powders from Recycled Hard Particle Embedded Composite Cutting Tools Altunbasak, Tansu; KUL, MEHMET; Karakaya, İshak (2017-06-01) Used valuable particle embedded composite cutting tools, obtained by powder metallurgy techniques by mixing metallic powders with hard, abrasive particles were electrolyzed for reclamation of metallic powders and valuable particles. The effects of copper ion and sulfuric acid concentrations and pH of the electrolyte, current density and temperature on microstructure of produced copper powders were investigated in detail. Copper powders were characterized by X-Ray diffraction (XRD) and scanning electron micr...
Studies on the modification of interphase/interfaces by use of plasma in certain polymer composite systems Akovali, G; Dilsiz, N (Wiley, 1996-04-01) Calcium carbonate and carbon fiber surfaces were modified by use of a series of plasma polymers at different selected plasma conditions, and the effect of surface modification, mainly on the mechanical properties of composite systems prepared, was investigated. The matrices for the composite systems employed were polypropylene and epoxy, for the chalk and C fiber, respectively. Mechanical and thermal studies and scanning electron microscopy (SEM) pictures revealed that inclusion surfaces, being independent ...
First-principles prediction of insertion potentials in Li-Mn oxides for secondary Li batteries Aydınol, Mehmet Kadri (The Electrochemical Society, 1997-11-01) First-principles methods have started to be widely used in materials science for the prediction of propel-ties of metals, alloys, and compounds. In this study, we demonstrate how first-principles methods can be used to predict the average open-circuit voltage that can be obtained from a lithium battery with spinel or layered manganese oxides used as the cathode. For this purpose we combine a basic thermodynamical model with the ab initio pseudopotential method. The good agreement between the computed and ex...
Development of Nanostructured Metallic Glasses with High Toughness Bagheri Behboud, Ali; Özerinç, Sezer; Department of Mechanical Engineering (2021-8) Metallic glasses are metallic alloys with disordered atomic structures and desirable mechanical properties such as high hardness, high elastic limits, and wear resistance. These properties make metallic glasses promising materials for wear-resistant, corrosion-resistant, and biocompatible coating applications. On the other hand, metallic glasses are brittle, which is a major disadvantage for their use in practice. This thesis study aimed to tackle this problem through the development of nanostructured metal...
Fast recovery of non-fickian moisture absorption parameters for polymers and polymer composites Güloğlu, Görkem Eğemen; Hamidi, Youssef K.; Altan, M. Cengiz (2017-09-01) © 2016 Society of Plastics EngineersMoisture absorption is known to detrimentally affect the mechanical integrity and durability of polymeric materials. Consequently, accurately characterizing the moisture diffusion into these materials is critical when predicting their service life behavior. The hindered diffusion model (HDM), that is, Langmuir-type absorption, has been widely used to successfully describe both Fickian and anomalous absorption behavior of polymeric materials. In this article, proper use of...

Citation Formats

S. Özerinç, A. Motallebzadeh, and Y. E. Kalay, “Advanced micromechanical characterization techniques for understanding materials behavior at the nanoscale,” presented at the 19th International Metallurgy and Materials Congress (25- 27 October 2018), İstanbul, Turkey, 2018, Accessed: 00, 2021. [Online]. Available: http://immc.metem.org.tr/index.php/2016-03-03-13-14-44.