Microstructure refinement by hot working
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. 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 ...
Microstructure refinement by hot working
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Web1 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 ... Web6 feb. 2024 · This work indicates that refining the microstructure of hot-rolled steels is feasible by ferrite dynamic recovery and dynamic recrystallization. The present study tries to refine the microstructure of …
WebIt 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 … Web1 jan. 2012 · 1.1 Microstructure Evol ution During Hot Working At low temperatures, work hardening mec hanisms such as increasing dislocation density lead to an increase in stress necessa ry to further...
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 … Web20 jan. 2024 · 2.2 Thermo-mechanical Control Process. Figure 2 shows the thermo-mechanical control process in comparison with a conventional hot working process. In the conventional process, the cooling rate from the initial heating temperature to the hot working temperature is slow and uncontrolled, so that austenite grains grow coarsely …
Web14 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 ...
WebThe main aim of the present work is to study the effect of hot deformation parameters on microstructural changes as well as new grain formation taking place in tested steel during hot compression process. Special attention is paid to analyzing the relationship between deformation strains and DRX grain size and the facts about katy texasWeb4 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 … facts about kayapo tribeWeb1 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. facts about kauri treesWebRecovery, 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. facts about kauai hawaiiWeb24 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. do feet swell when runningWeb11 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 ... facts about kavaWeb20 mei 2024 · The refinement of microstructure enhanced of course the mechanical properties of the brass alloy including yield strength, ultimate tensile strength, elongation, hardness and wear resistance. do feet swell when hiking