2024 Microstructure refinement by hot working

Microstructure refinement by hot working

Author: zfjg

August undefined, 2024

Web4 mrt. 2024 · However, the hot-deformation behavior and microstructure evolutions of the nonequiatomic HEAs, particularly the TRIP-HEA, have not been investigated. In the present study, we aimed to reveal the hot deformation and DRX behaviors of the representative Co 35 Cr 25 Ni 15 Mn 15 Fe 10 TRIP-HEA, by compression at a temperature higher than … WebThe recovery process reduces the mechanical properties of a metal dramatically d. The recrystallization process happens when the cold-worked metal is heated above a certain temperature to rapidly eliminate the residual stresses and dislocations Recovery, Recrystallization, Grain Growth The three stage of annealing are: a.

Microstructural model for hot strip rolling of high-strength low …

Web19 feb. 2024 · Hot plastic working behavior and microstructure evolution were investigated during a production process of four medium-Mn steels, which differed in Mn (3 and 5%) and Nb contents. The production process started with casting, followed by hot forging, rough hot-rolling and concluded with final thermomechanical processing, which … Web21 dec. 2024 · The study suggested that grain size is refined when the deformation is carried out at lower temperature (> Ac3). When the degree of deformation was increased from 20% to 60%, grain size and... how to check spleen

Low Temperature Deformation Induced Microstructure Refinement …

WebThe microstructural evolution during hot-strip rolling has been investigated in four commercial high-strength low-alloy (HSLA) steels and compared to that of a plain, low-carbon steel. The recrystallization rates decrease as the Nb microalloying content increases, leading to an increased potential to accumulate retained strain during the final ... Web4 aug. 2024 · The microstructural changes in the machined surface layer of Ni-based super alloys essentially determine the final performance of the structural components of aerospace engines in which these alloys are used. In this work, multiscale metallurgical observations using scanning electron microscopy, electron-backscatter diffraction ... Web28 okt. 2016 · Hot work tool steel H13 (4Cr5MoSiV1) is widely used as tools for die casting, forging, and extrusion, due to its mechanical properties like high hardness (>300 HV) and toughness (A kv > 15 J), good wear resistance, thermo-cyclic stability, and high elevated temperature strength and ductility. how to check spf records

Grain refinement in hot working of 2219 aluminium alloy

On the Hot Deformation of a Fe-Al-Ta Iron Aluminide Prepared …

Web1 feb. 2024 · This work indicates that refining the microstructure of hot-rolled steels is feasible by ferrite dynamic recovery and dynamic recrystallization. Discover the world's research 20+ million members Web11 jun. 2024 · To investigate the deformation behavior and microstructure evolution of Ti-44Al-4Nb-1.5Cr-0.5Mo-0.2B alloy, we conducted a series of hot compression tests at a temperature of 1473 K and a strain ... how to check spleen health how to check spleen function

"Web6 apr. 2024 · The post-heat treatment of as-SLMed H13 was also found as an effective method to remove the residual stresses, tune the microstructure and improve the mechanical properties. It has been reported that the as-SLMed tool steel can achieve a significant secondary hardening when tempered at 300–600 °C [28,29,30]. " - Microstructure refinement by hot working

Microstructure refinement by hot working

Numerical analysis on the deformation characteristics and ...

WebRecovery, recrystallization, and grain growth are microstructural changes that occur during annealing after cold plastic deformation and/or during hot working of metals. This article reviews the structure of the deformed state and describes the changes in the properties and microstructures of a cold-worked metal during recovery stage. WebAbstract High-temperature mechanical behavior and microstructure evolution during hot deformation of an as-cast β-solidified Ti-43.2Al-1.9V-1.1Nb-1.0Zr-0.2Gd-0.2B (at.%) alloy were studied. Phase transformation temperatures and associated phase fields (α2 + γ, α + γ, α, and α + β) were established by Thermo-Calc calculations, dilatometry, differential …

Did you know?

WebIn the present work, a combined process of laser powder bed fusion (LPBF) and hot working in terms of microstructure refinement was investigated for Fe-25Al-1.5Ta alloy samples. Uniaxial compression tests were carried out parallel and perpendicular to the building direction (BD) at 1000 °C, where BCC A2-phase was stable, at a strain rate of … Web3 jun. 2024 · A refined microstructure is obtained in a Ti‐40Al‐8Nb‐0.5B alloy by hot deformation in the (α + β) phase region and subsequent tempering. Dynamic recrystallization of α phase results in the...

Web5 apr. 2024 · In the present work, a combined process of laser powder bed fusion (LPBF) and hot working in terms of microstructure refinement was investigated for Fe-25Al-1.5Ta alloy samples. Uniaxial compression tests were carried out parallel and perpendicular to the building direction (BD) at 1000 °C, where BCC A2-phase was stable, at a strain … Web24 jul. 2024 · The microstructure and microhardness of X70 pipeline steel were investigated after conducting different processing routes. The microstructure was characterized using optical and electron microscopy.

WebThen, different paths of hot deformation and annealing are tested to elucidate how the microstructure is restored at high temperatures: single-step at constant strain rate, strain rate jumps, multi-stage deformation, and hot deformation followed by annealing. Web1 jul. 2024 · Due to the grain morphology anisotropy, a significant microstructural difference was exhibited in the PSCed samples along different loading paths. The grain refinement in hot working of 2219...

WebThis study concerns the numerical simulation of two competing ultrasonic treatment (UST) strategies for microstructure refinement in the direct-chill (DC) casting of aluminium alloys. In the first, more conventional, case, the sonotrode vibrating at 17.3 kHz is immersed in the hop-top to treat the sump melt pool, in the second case, the sonotrode is inserted …

Web28 feb. 2024 · The microstructure of hot-pressing sintered Zr-6Al-0.1B alloy is analyzed by OM and SEM microscopic imaging techniques. The thermal deformation behavior and microstructure evolution of hot-pressing sintered Zr-6Al-0.1B alloy are analyzed by isothermal compression tests. how to check spline lengthWeb1 mei 2010 · PDF Purpose: The influence of hot-working conditions on microstructure evolution of new-developed 26Mn-3Si-3Al-Nb-Ti high-manganese steel was... Find, read and cite all the research you need ... how to check spm trial resultWebIt also examines the key mechanisms that control microstructure evolution during hot working and subsequent heat treatment. These include dynamic recovery, dynamic recrystallization, metadynamic recrystallization, static … how to check spline length in autocadWeb20 dec. 2024 · The present work brings a novel approach that grain refinement would work ... M.I.; García, J.L.; Pinto, H.C. New insights into the microstructural evolution of Ti-5Al-5Mo-5V-3Cr alloy during hot working ... Peng Zhang, Tao Ma, Zhuo Wang, Tongli Wu, Li Wang, and Kehong Wang. 2024. "A Novel Approach of Microstructure Refinement of ... how to check splunk forwarder status in linuxWeb1 mei 2024 · The microstructure evolution during heating is obvious. At room temperature, the grain boundaries are not visible ( Fig. 3 a), and only some light scratches due to polishing are observed. When heated to 850 °C and 950 °C, respectively, some austenite grain boundaries are observed, as shown in Fig. 3 b and c. how to check splunk forwarder versionWeb24 mrt. 2024 · Microstructure refinement can improve the strength of materials without trading off ductility. Plastic deformation is the most adopted method for microstructure refinement of metallic materials. However, excessive deformation can fracture reinforcements in metal matrix composites. how to check splunk license expiryWeb14 feb. 2024 · Thus, the content of this Special Issue, “Hot Deformation and Microstructure Evolution of Metallic Materials”, focused not only on common technologies (e.g., rolling or forging), but also on various types of complex thermomechanical processing. The strong physical basis of the research work, the application of advanced hot deformation ... how to check splunk license expiry date