Bulging recrystallization

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August undefined, 2024

WebDec 14, 2024 · The dynamic recrystallization of quartz is bulging (BLG) recrystallization to subgrain rotation (SGR) recrystallization (Figures 5(b) and 5(d)). Plagioclase primarily exhibits characteristics of internal brittle fracturing, splitting the grain up into elongate “book-shaped” fragments (Figure 5 (a)), and bulging (BLG) recrystallization ... WebJan 1, 2003 · The rotational dynamic recrystallization kinetics calculation showed that subgrains had sufficient time to generate an equiaxed microcrystalline structure by …

Recrystallisation Structure Database

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 … WebDynamic recrystallization (DRX) is a type of recrystallization process, found within the fields of metallurgy and geology. In dynamic recrystallization, as opposed to static recrystallization, the nucleation and growth of new grains occurs during deformation rather than afterwards as part of a separate heat treatment. how to remove smell from mason jars

Mechanism of austenite recrystallization induced by …

WebApr 1, 2024 · Quartz recrystallization occurs dominantly by grain boundary migration, producing elongate grains with lobate contacts up to >200 μm in length ( Fig. 8 a, d). Subgrain rotation recrystallization also occurs, generating more equant grains typically with 50–100 μm in diameter ( Fig. 8 a and b). WebApr 14, 2024 · The deformation mechanisms in these rocks include bulging recrystallization (BLG), subgrain rotation recrystallization (SGR) and grain boundary migration recrystallization (GBM), which are considered as the key to estimate the deformation temperature of the rocks. The estimated ranges of deformation temperature … WebAug 28, 2024 · In this work, dynamic recrystallization (DRX) behavior of 316LN austenitic stainless steel was studied by hot compression experiments at temperature range of 900–1200°C and strain rate range of 0. 005–0.5 s−1. The Arrhenius hyperbolic sine function was given to fit well with the hot deformation flow behavior of 316LN steel and the … normal urothelium histology

Strain Partitioning along Terrane Bounding and

WebAbstract Quartz veins in the Eastern Tonale mylonite zone (Italian Alps) were deformed in strike-slip shear. Due to the synkinematic emplacement of the Adamello Pluton, a temperature gradient between 280°C and 700°C was effected across this fault zone. The resulting dynamic recrystallization microstructures are characteristic of bulging … WebThere are three different types of recrystallisation that can occur during deformation. These are bulging, subgrain rotation, and grain boundary migration. They are dependent on temperature and stress imposed. Introduction Bulging Recrystallisation Grain Boundary Migration Recrystallisation Subgrain Rotation Recrystallisation References how to remove smell from leatherWebSep 2, 2024 · Bulge recrystallization or bulging recrystallization is a type of dynamic recrystallization that affects only the boundary region of porphyroclasts so that the resulting grain-boundary bulges may be separated from the old grains, forming relatively small recrystallized grains (Stipp et al. 2002 ). normal uroflowmetry values

"WebNov 7, 2024 · The dominant nucleation mechanism of dynamic recrystallization (DRX) is the bulging of original grain boundaries, which is the typical feature of discontinuous dynamic recrystallization (DDRX), and continuous dynamic recrystallization (CDRX) is merely an assistant mechanism of DRX. The main contributions of DRX on … " - Bulging recrystallization

Bulging recrystallization

Four models of the formation of new grains by bulging …

WebJun 15, 2024 · Two kinds of orecontrolling fractures have been distinguished which include the gentle dip types (18°–50°) with NW (315°–355°) and SW (180°–235°) dip hosting … WebApr 1, 2024 · The recrystallized grains show new grain shape fabric, indicating a dextral (top-to-SE) sense of shear. Calcite (Cal) shows the foliation. (b) A typical Upper Mylonite Zone sample. Quartz (Qtz) is almost completely recrystallized by bulging mechanism. Plagioclase (Plg) grains occur as porphyroclasts and white mica (Wm) defines the foliation.

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WebThe plagioclases show two different recrystallization microstructures: bulging recrystallization at grain boundaries and discrete zones of recrystallized grains across porphyroclasts probably involving fracturing. Deformation took place under amphibolite facies conditions on a retrograde P,T-path. WebMar 1, 2024 · During the bulging recrystallization, annealing twin boundaries nucleate frequently at the growing interface. As a result, the recrystallization associated with …

WebThe grain size reduction by developing new metamorphic mineral in conjunction with the bulging recrystallization in quartz weakens the rock further and promotes the development of ultramylonite. Weakening of the rocks is pronounced during the formation of shear zone. Crustal scale shear zones at the plate boundary develop due to grain size ... WebDec 21, 2024 · Unlike the bulging of the as-welded tube where significant recrystallization happened at the early stage, DRX happened later during the bulging process of the tube after annealing. Both the refined grains and the increasing dislocation density at the middle-late stage would accelerate the material softening [29] , [30] .

WebOct 1, 1986 · Once dynamic recrystallization starts by the bulging mechanism, it proceeds rapidly, forming twins at the growth front,one after another. However. it is not clear … WebJan 1, 2024 · Brittle deformation can be described as a shape change of the rock by breaking of its chemical bonds, which do not successively reform. It occurs when the applied stress surpasses the elastic...

WebAug 27, 2024 · Dynamic recrystallization (DRX) is one of the most important mechanisms to control the microstructure evolution during thermo-mechanical processing (TMP) for metallic materials.

WebMar 1, 2014 · The textural association of the retrograde products with bulging recrystallization micro-structures in Qz suggests that the reaction proceeded at moderate temperatures of ~280-400°C (Stipp et... how to remove smell from microwave ovenWebNov 30, 2002 · Within the mylonites, zones characterized by different dynamic recrystallization mechanisms were defined: Bulging recrystallization (BLG) was dominant between ∼280 and ∼400 °C, subgrain ... normal uroflowmetry graphWebJan 1, 2024 · Bulging out of the (high-angle) A/B grain boundary into grain B under simultaneous elimination of the surplus stored energy (annihilation of dislocations by the advancing grain boundary) releases stored (deformation) energy and thereby provides a possible mechanism for the initiation of recrystallization. normal us keyboard configurationWebIt appears that bulging recrystallization in low T, high stress dislocation creep is capable of producing significant strain weakening and strain localization in the upper mantle. … how to remove smell from roomWebJun 13, 2024 · Bailey and Hirsch coined the term 'bulging' to describe this form of dynamic recrystallization . Meanwhile, it is also called ‘bulging recrystallization’ . In these experiments, bulging recrystallization played a dominant role (Fig. 14). It can be seen that before heat treatment, the boundary of quartz only has few bulges (Fig. 14a, b normal uroflow parameters normal uroflow valuesWebThe lowest temperature texture (~250-400°C), bulging recrystallization (BLG) is characterized by bulges and small recrystallized grains along grain boundaries … how to remove smell from new mattress