Exploring novel deformation mechanisms in aluminum–copper alloys using in situ 4D nanomechanical testing
- Arizona State Univ., Tempe, AZ (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
Even after nearly a century of extensive use of aluminum alloys in structural applications, our understanding of such precipitation-strengthened materials is far from complete. With the advent of next generation advanced characterization techniques, our ability to probe materials in unique ways and at different length scales has established a new paradigm for devising new pathways to alloy design by engineering materials and tailoring specific properties at the nanoscale. Here, we perform in situ nanomechanical testing in conjunction with synchrotron -based hard X-ray nanotomography to capture initiation and evolution of damage in 3D in Al-Cu alloys. Precipitates in these alloys are seen to exhibit unprecedented localized deformation in compression, which is attributed to novel observations of kinking in these brittle second-phase particles, accompanied with the generation of a fine polycrystalline texture in the adjacent matrix. We observe a size-dependent transition in precipitate deformation behavior that has been thoroughly investigated using a comprehensive correlative approach.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- U.S. Army Research Laboratory - U.S. Army Research Office (ARO); USDOE
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1571280
- Alternate ID(s):
- OSTI ID: 1543047
- Journal Information:
- Acta Materialia, Vol. 176, Issue C; ISSN 1359-6454
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Microstructural characterization and mechanical property prediction of a polymer matrix composite by X-ray synchrotron tomography and spatial correlation functions
|
journal | September 2019 |
Similar Records
Nanomechanical Scratching Induced Local Shear Deformation and Microstructural Evolution in Single Crystalline Copper
Deformation of nanotubes in peeling contact with flat substrate: An in situ electron microscopy nanomechanical study