In Situ X-Ray Diffraction Analysis of Face-Centered Cubic Metals Deformed at Room and Cryogenic Temperatures

Cryo-FIB and Transmission Electron Microscopy of Cryoformed Metals

“…As well described in recent works [2,5], silver shows great improvement in mechanical properties -higher ductility and strength -when deformed at cryogenic temperature. This is a result of partial suppression of dynamic recovery proven by microstructural refinement [2,5]. A rectangular specimen with dimensions 3.5 x 3.5 x 8.0 mm was cryogenically deformed by compression and reduced in thickness to 1.44 mm.…”

“…This work is an extension of the previous work carried out by Namur, et al [6]. Silver was the material chosen for this experiment due to its low SFE (22 mJ/m 2 ) [2]. As well described in recent works [2,5], silver shows great improvement in mechanical properties -higher ductility and strength -when deformed at cryogenic temperature.…”

“…Silver was the material chosen for this experiment due to its low SFE (22 mJ/m 2 ) [2]. As well described in recent works [2,5], silver shows great improvement in mechanical properties -higher ductility and strength -when deformed at cryogenic temperature. This is a result of partial suppression of dynamic recovery proven by microstructural refinement [2,5].…”

“…When it comes to FCC metals, the cryogenic deformation may result in improvements in mechanical properties, such as strength and/or ductility [1]. The enhancement occurs because of the partial suppression of dynamic recovery, which induces microstructural refining due to an increase of internal defect density [1,2]. Therefore, most deformation cryo-studies conduct the material characterization at room temperature, providing sufficient driving force to initiate static recovery mechanisms [3].…”

“…Therefore, most deformation cryo-studies conduct the material characterization at room temperature, providing sufficient driving force to initiate static recovery mechanisms [3]. Some authors utilize in situ X-Ray Diffraction (XRD) to analyze the cryogenic forming [2,4,5]. It keeps the sample at cryogenic temperature, which avoids the recovery mechanisms.…”