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hot deformation effects on austenite

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(PDF) An Investigation of Deformation Effects on Phase

An Investigation of Deformation Effects on Phase Transformation in Hot Stamping Processes. The results showed that the deformation at austenite phase causes the reduction in martensitic phase (PDF) An Investigation of Deformation Effects on Phase The results showed that the deformation at austenite phase causes the reduction in martensitic phase transformation. For a certain strain level, deformation applied at a lower temperature and a

Determining the Conditions for Dynamic

ularly by avoiding partial recrystallization of austenite dur-ing hot strip mill processing. In hot rolling of austenite, the recrystallization of the fol-lowing types is known to occur. First to mention is the dynamic recrystallization (DRX) during deformation in the roll bite. After deformation (i.e., between the Effect of -ferrite co-existence on hot deformation and This work evaluates the effect of co-existence of a large volume fraction of -ferrite on the hot deformation and dynamic recrystallization (DRX) of austenite using comparative hot torsion tests on AISI 304 austenitic and 2205 duplex stainless steels. The comparison was performed under similar deformation conditions (i.e. temperature and strain rate) and also under similar Zener-Hollomon, Z Effect of Hot Deformation on the Nitride Precipitation Dec 01, 2009 · Effect of Hot Deformation on the Nitride Precipitation Behavior in High Nitrogen Austenitic Steel Effect of Hot Deformation on the Nitride Precipitation Behavior in High Nitrogen Austenitic Steel Wang, Zhenhua; Fu, Wantang; Sun, Shuhua; Zhao, Deli; Zhang, Guoli; Zhang, Wenhui; Qv, Minggui 2009-12-01 00:00:00 JMEPEG (2010) 19:951954 ASM International DOI:

Effect of Temperature during Hot Deformation on the

Therefore, the combined effects of hot deformation related to the microstructure and corrosion properties of the HSLA pipeline steels were carefully investigated to optimize the hot deformation parameters. austenite grain boundaries as coarse ferrite side-plates [24, 25]. The majority of the microstructures in Effect of hot deformation of austenite on martensitic The effect of hot deformation of austenite (compressed by 70% at 1023 K) on the martensitic transformation was studied using scanning electron microscopy and electron backscattering diffraction to Effect of hot plastic deformation in the austenite May 02, 2007 · The deformation has a higher its higher resistance transforms not into ferrite, but into influence on bainite transformation, whose starting tempera- bainite of the lath morphology. ture decreases by 20°C and whose end temperature decreases Analysis of the quantity of transformed austenite de- by 50 70°C at the cooling rate of 12 25 K sec. pending on temperature under the

Effects of Hot Deformation and Subsequent

with increasing the amount of deformation and decreasing nish rolling temperature due to the stabilization of retained austenite. Tensile strength and total elongation can reach the maximum values (791MPa and 36%, respectively), and isothermal holding 20min at 400°C after hot deformation has been proved to be the optimum treatment. Influence of Boron on Initial Austenite Grain Size and Furthermore, various phenomena have been shown to occur during the high temperature deformation process of austenitic steel:(1) work hardening (WH), (2) dynamic recovery (DRV) and (3) dynamic recrystallization (DRX) depending on tunable process conditions such as Simulation of the Effect of Hot Deformation on the A model that describes the evolution of the size of an austenite grain of low-alloyed steels under deformation within the temperature region of stable austenite has been proposed. The model describes both the change in the dislocation density under deformation with consideration for relaxation processes and the deformation-induced processes of the precipitation and evolution of carbonitride

Strain Partitioning and Softening Mechanisms of / in

The hot deformation behavior of lean DSS is complex because of coexistence of ferrite and austenite in the microstructure. 5 The softening mechanisms in the constituent phases in DSS during hot deformation are unclear. It is generally accepted that ferrite with higher stacking fault energy (SFE) softens by dynamic recovery (DRV). THE EFFECT OF AUSTENITE VOLUME FRACTION ON THE EFFECT OF AUSTENITE VOLUME FRACTION ON THE DEFORMATION RESISTANCE OF 409 STAINLESS STEELS DURING HOT-STRIP ROLLING D. Chae, S. Lee, S. Son The mill log data obtained from the hot-strip rolling of 409 stainless steels were analyzed in order to investiga-te the effect of the chemical composition on the deformation resistance. The Effects of Hot Deformation Parameters on the Size of Such effects and factors that occur in microalloyed steels (HSLA) during hot deformation have just a significant impact on grain size of austenite inherited by the structures of transformation after cooling, affecting as a consequence the performance of steel [3-6].

The austenite microstructure evolution in a duplex

The austenite microstructure evolution and softening processes have been studied in a 23Cr6Ni3Mo duplex stainless steel, comprising equal fractions of austenite and ferrite, deformed in uniaxial compression at 1000 °C using strain rates of 0.1 and 10 s 1.The texture and microstructure evolution within austenite was similar in character for both the strain rate used.Materials Free Full-Text Effect of Hot Deformation on The influence of austenite deformation on the kinetics of austenite to ferrite transformation was noted. The plastically deformed samples showed an accelerated start of ferritic transformation and the extension of its range. C before isothermal holding in order to study the effect of hot deformation on the kinetics of phase transformations

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