The effect of pre-strain on tensile behaviour of 316L austenitic stainless steel

Abstract

The effect of pre-strain on tensile behaviour of 316L austenitic stainless steel was investigated, focusing on strain rate sensitivity, temperature sensitivity and strain hardening. Experimental data showed that strain rate sensitivity, temperature sensitivity and strain hardening were weakening with pre-strain. Meanwhile, the variation of microstructure with pre-strain was observed by optical microscopy, scanning electronic microscopy and X-ray diffraction. Then, the mechanical properties of pre-strained material were correlated with the increase in dislocation density and mechanical twinning with pre-strain. Finally, an improved Arrhenius-PS model considering the effect of pre-strain was developed. This paper is part of a thematic issue on Nuclear Materials.

Effects of Silicon, Chromium, and Copper on Kinetic Parameters of Precipitation during Tempering of Medium Carbon Steels

“…Microstrains ( e ) and dislocation density ( ρ ) of 42SiCr and 42SiCr + Cu steels after quenching and subsequent tempering, determined using XRD data in accordance with [ 11 ], are shown in Figure 3 . Note that the found high value of the ρ in studied steels after quenching corresponds to the result [ 10 ] on the dependence of ρ on the silicon content.…”

“…The scanning angle (2Theta) ranged from 35° to 105° with a step size of 0.15° and a measurement time per step of 0.25 s. A Pseudo-Voigt profile was used for determining the full width half maximum (FWHM) according to [ 10 ]. Then the dislocation density and microstrain were calculated according to [ 11 ].…”

Physiological adaptations to sugar‐mimic alkaloids: Insights from Bombyx mori for long‐term adaption and short‐term response

“…Detoxification enzymes including esterases, cytochrome P450 monooxygenases (P450s), glutathione transferases (GSTs), carboxylesterases (CarEs), and UDP glycosy‐transferases (UGTs), appear to have a key role in plant–insect interactions (Birnbaum, Rinker, Gerardo, & Abbot, 2017; Peng, Li, Peng, Pei, & Zhou, 2018). Among the detoxification‐related DEGs, 39 genes are members of five gene families that are wildly known to be involved in detoxification processes and are associated with host plant utilization: 3 CarEs, 10 esterases, 2 GSTs, 16 P450s, and 8 UGTs (Table ).…”

“…Detoxification enzymes including esterases, cytochrome P450 monooxygenases (P450s), glutathione transferases (GSTs), carboxylesterases (CarEs), and UDP glycosy-transferases (UGTs), appear to have a key role in plant-insect interactions (Birnbaum, Rinker, Gerardo, & Abbot, 2017;Peng, Li, Peng, Pei, & Zhou, 2018).…”

Nuclear Materials

“…Multipass welding of the primary components in a pressurised water reactor subjects the material to significant thermomechanical cycling. The article by Peng et al [6] is particularly relevant to the primary piping in a fission power plant, and indeed to stainless steel overlays that are deposited on to the internal surfaces of steel pressure vessels, since work hardening in austenitic stainless steels is dramatic. Finally, the article by Liu et al [7] touches on the field of grain boundary engineering, which serves an important role in mitigating the corrosion of nuclear components.…”