Geometric dynamic recrystallization
WebAug 15, 2016 · In this study, the dynamic recrystallization behaviors of a nuclear grade 316LN austenitic stainless steel were researched through hot compression experiment performed on a Gleeble-1500 simulator at temperatures of 900–1250 °C and strain rates of 0.01–1 s {sup −1}. WebAug 1, 2013 · D. Geometric dynamic recrystallization advances (onset of GDRX) An important attribute distinguishing CDRX and DDRX is the difference in the evolution of …
Geometric dynamic recrystallization
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WebOct 1, 2004 · It was shown that the new grains with an average size of about 15 μm result from a specific process of geometric dynamic recrystallization (GRX) which can be considered as a type of continuous... WebOct 10, 2024 · To study the deformation behavior and recrystallization of alloy 718 in annealed and aged state, compression tests were performed using Split-Hopkinson pressure bar (SHPB) at high strain rates (1000 to 4000 s−1), for temperatures between 20 $$^\\circ $$ ∘ C and 1100 $$^\\circ $$ ∘ C (293 K to 1373 K). Optical microscope (OM) …
WebAug 30, 2004 · The mechanism of new grain evolution during equal channel angular extrusion (ECAE) up to a total strain of ~12 in an Al-Cu-Mn-Zr alloy at a temperature of … WebAug 12, 2024 · The amount of dynamic recrystallization grains is even lower for the higher strain rate sample, which was to be expected as recrystallization is a time-related process. However, it is important to note that the deformation texture changed for the 0.1 and 0.01/s strain rate samples after strain of 1.25 (see Figure 4 ) and the area fraction of ...
WebHigh-temperature plane-strain compression tests were performed on Fe-3.0 wt.% Si alloy from 900 °C to 1150 °C at strain rates of 5 s−1 to 1 s−1, and the texture development from different initial textures was investigated by means of electron backscattered diffraction. Dynamic recrystallization occurs by strain-induced boundary migration, and the … WebApr 11, 2024 · Its source is believed to be a continuous process of dynamic recrystallization. In this layer, the formation of cracks and debris is observed as well. Below is an intermediate layer with elongated grains and serrated grain boundaries in which a geometric dynamic recrystallization process has been recognized as well.
Geometric dynamic recrystallization occurs in grains with local serrations. Upon deformation, grains undergoing GDRX elongate until the thickness of the grain falls below a threshold (below which the serration boundaries intersect and small grains pinch off into equiaxed grains). The serrations may predate stresses being exerted on the material, or may result from the material’s deformation.
WebAs the result of dynamic recrystallization, the microhardness of the base material value of 86 HV0.1 increased to about 110–125 HV0.1 in the stir zone depending on the used welding parameters. distant sky nick cave \u0026 the bad seedsWebAug 1, 2013 · D. Geometric dynamic recrystallization advances (onset of GDRX) An important attribute distinguishing CDRX and DDRX is the difference in the evolution of the textures following their progression. DDRX is characterized by a strong deformation texture transformation, ... distant shot in filmWebMar 20, 2024 · The results reveal that due to a large number of initial high-angle grain boundaries and large applied compressive strains, GDRX is activated in the absence of … cpu offers onboard videoWebGeometric dynamic recrystallization of austenitic stainless steel through linear plane-strain machining Yaakov Idell Materials Science Division, Lawrence Livermore National … distant shores vacation rental fort bragg caWebMay 25, 2024 · It is currently widely accepted that the SRX (static recrystallization) mechanism can be divided into three categories, according to nucleation and growth characteristics: continuous static recrystallization (CSRX); discontinuous static recrystallization (DSRX) and geometric static recrystallization (GSRX). distant snore of sleeping war beastsWebGeometric Dynamic Recrystallization in α-Zirconium at Elevated Temperatures Abstract: The micron-size grain refinement of pure a-zirconium obtained with elevated temperature tensile deformation was investigated. The development of low-misorientation subboundaries caused the serration of the original grain boundaries at low strains. distant snowy mountainsWebgeometric dynamic recrystallization (GDRX) is observed. The elongated prior β grain boundaries are pinched off leading to the formation of new small grains with similar size compared to the subgrains. The occurrence of GDRX during hot deformation of Ti-5Al-5Mo-5V-3Cr-1Zr was also observed by Dikovits . et al. [4] at low strain rates. distant site telehealth fqhc