Microstructure refinement by hot working
Web15 okt. 2009 · The microstructure and mechanical properties of the H11 hot-work tool steel and a leaner version of the same alloy (L-H11) processed by Selective Laser Melting were assessed as a function of specific microstructural conditions obtained by performing different heat treatments. 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
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Web2 mrt. 2024 · In a view of microstructure refinement and work ability improvement, the optimum processing should be selected in the temperature range of 650–730 °C and the strain rate range of 0.001-0.1 s−1. In this study, the hot deformation behavior and deformation mechanism of Cu-18 wt.%Nb composite wire was studied based on … 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.
Web11 apr. 2024 · This work is motivated by the fact that the microstructures of nickel-based alloy forged parts influenced by hot deformation have a great impact on the mechanical properties of their final parts. In this paper, a simplified 2D half-symmetry FE model embedded with the JMAK model is developed to predict the deformation characteristics … Web20 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.
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 ... Web1 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.
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 …
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 … can you give tpn through a chest portWeb4 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 … can you give too much zofranWeb28 sep. 2024 · The above results indicate that microstructure and mechanical properties of hot-rolled steel base metal can be improved by effective oxide particles combined with proper cooling process. The grain-refining behavior shows similarity to that of welding HAZ, but still exhibits some new characteristics. can you give trifexis to a pregnant dogWeb14 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 ... brighton street industrial estate hu3 4hhWeb12 aug. 2024 · There is increasing usage of high strength Beta Ti alloy in aerospace components. However, one of the major challenges is to obtain homogeneous refined microstructures via the thermo-mechanical processing. To overcome this issue, an understanding of the hot deformation conditions effect on the microstructure, prior to … can you give tums to dogsWebInfluence of microstructure on mechanical behavior of hot-work steels is analyzed on submicro, micro, and macro scale. Except for suitable microstructure, phase distribution, and microstructure refinement, proper alloy chemistry and melting practice are important for hot-work steel properties. can you give tylenol and naproxen togetherWeb28 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. can you give tpn through picc