|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Fracture Properties and Residual Stresses in Small Dimensions
||Small-scale Testing Methodology to Study Fracture Toughness of Interfaces in Multilayered Systems
||Adnan Ozekcin, Richard P Vinci, Srinivasan Rajagopalan
|On-Site Speaker (Planned)
Macroscopic mechanical properties of materials are determined by structure and composition at much smaller length scales. In multilayered systems, chemistry and structure of interfaces can also govern the overall fracture behavior. This study addresses the development of a small-scale (micro to nano-scale) test methodology to measure fracture toughness with high site specificity in a multilayered thin coating. Interfaces of interest were targeted for determination of fracture toughness, and compared against the intrinsic values of fracture toughness obtained for the layers themselves. Through determination of the interface and intrinsic properties, the approach allows for identification of key structure and chemistry parameters for further optimization and enhancement of overall coating and material performance. Finally, the applicability of the approach to determining site-specific material properties in other multiphase systems will be discussed.