Impact of in situ nanomechanics on physical metallurgy. (11th June 2019)

• Record Type: Journal Article
• Authors: Kacher, J.; Kirchlechner, C.; Michler, J.; Polatidis, E.; Schwaiger, R.; Van Swygenhoven, H.; Taheri, M.; Legros, M.
• Editors: Minor, Andrew M.; Dehm, Gerhard
• Is Part Of: MRS bulletin. Volume 44:Number 6(2019:Jun.)
• Page Start: 465
• Page End: 470
• Publication Date: 2019-06-11
• Subjects: grain boundaries, -- dislocations, -- microstructure, -- scanning electron microscopy (SEM), -- transmission electron microscopy (TEM); Materials -- Periodicals; 620.11
• DOI: 10.1557/mrs.2019.124
• Languages: English
• ISSNs: 0883-7694

Abstract

Abstract: Abstract : The mechanical response of modern alloys results from a complex interplay between existing microstructure and its evolution with time under stress. To unravel these processes, in situ approaches intrinsically have a critical advantage to explore the basic mechanisms involving dislocations, grain boundaries (GBs), and their interactions in real time. In this article, we discuss recent findings using in situ nanomechanical testing techniques and refined crystallographic analysis tools. Advancements in in situ nanomechanics not only include multiaxial loading conditions, which bring us closer to real-world applications, but also high strain-rate testing, which is critical to compare experiments and simulations . In particular, unraveling the details of GB-based mechanisms and related microstructural changes will facilitate significant breakthroughs in our understanding of the behavior of materials on macroscopic length scales.