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5.. SummaryThe genetic algorithm is a technique of multipoint random optimization, based on the law of evolution of living things. An artificial neural network can be applied to successfully model the effect of heat treatment on the mechanical properties of 7175 aluminum alloy, and the complexity of constructing mathematical models, as …
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In this study, microstructure optimization for tailoring mechanical properties of cold-spray deposits was investigated via different post-process heat treatment. For this purpose, the microstructure and the mechanical properties of as-sprayed deposits were initially characterized using different techniques including scanning electron microscopy ...
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Energy efficiency optimization ICT (Information and Communication Technology) solutions are currently being developed for energy saving in buildings and, …
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The purpose of this paper is to critically review current knowledge and discuss the influence of post-AM heat treatment on microstructure, mechanical properties, and …
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Optimization of heat treatment program and effect of heat treatment on microstructure and flexural strength of micro-nano-Li 2 Si 2 O 5 whisker-reinforced glass-ceramics. ... With the increase of heat treatment temperature, LD gradually becomes the main crystalline phase, and the crystallinity increases, the crystal size increases, the …
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For the optimization, four heat treatment schemes were considered and their evaluation based on I $_{c}$ measurements at 4.2 $,$ K, in the range of 9 $,$ T to 15 $,$ T, on SEM micrographic studies on grain size and shape and on hysteresis loss measurements on a vibrating sample magnetometer (VSM).
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The optimization of the solution heat treatment (SHT) of fourth-generation single-crystal nickel-base superalloys LDSX-6B and LDSX-6C is presented. The methodological approach to optimizing the SHT process is particularly highlighted. Differential scanning calorimetry (DSC) measurements and electron-probe microanalysis …
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Wire-arc additive manufacturing and post-heat treatment optimization on microstructure and mechanical properties of Grade 91 steel ... The post heat treatments are one of the critical stages for the removal of anisotropy derived from WAAM process, being beneficial to the property improvement of WAAM builds [34], [35], [36], [37].
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Abstract: The heat treatment process plays a central role in optimizing the critical current density of Nb $_{text{3}}$ Sn wire. Increasing the critical current density of Nb $_{text{3}}$ Sn wire, reducing the use amount of wire in magnets and reducing the price are important ways to promote the industrialization and mass application of Nb $_{text{3}}$ Sn wire.
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Heat treatment optimization of an automotive stamping die steel with low energy consumption @article{Chen2021HeatTO, title={Heat treatment optimization of an automotive stamping die steel with low energy consumption}, author={Bin Chen and Dequn Kong and Zhenhua Lai and Xujun Wen and Jian Zhou}, journal={Journal of Physics: …
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Jarco A., Pezda J. Effect of Heat Treatment Process and Optimization of Its Parameters on Mechanical Properties and Microstructure of the AlSi11(Fe) Alloy. Materials. 2021; 14:2391. doi: 10.3390/ma14092391. [PMC free article] [Google Scholar] 24. ASTM Standard B917/B917M-2001; Standard Practice for Heat Treatment of Aluminum-Alloy …
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Adaptive data-driven prediction and optimization of tooth flank heat treatment deformation for aerospace spiral bevel gears by considering carburizing-meshing coupling effect[J] International Journal of Heat and Mass Transfer, 174 (2021), Article 121301. Google Scholar [18] Simon Vilmos.
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The effect of the heat treatment temperature on the microstructure was investigated by SEM observation. SEM images of Mg 91.98 Al 5 Ca 3 Mn 0.02 alloys heat-treated for 2.5 h are shown in Fig. 2.The as-cast Mg 91.98 Al 5 Ca 3 Mn 0.02 alloy was composed of α-Mg and eutectic regions, as shown in Fig. 2 (a). On the other hand, in …
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This study aims to produce an eco-cement by using heat treated dam's sludge as an additive to clinker. Different heat treatment cycles were applied to the dam's sludge: three temperatures selected in the range between the dehydroxylation and decarbonation temperatures (600, 700 and 800 °C) reached by adopting different …
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Heat Treatment Optimization of a c¢-Strengthened Nickel-Based Superalloy Based on Central Composite Design CHRISTINA MARIA KATSARI, ANDREW WESSMAN, and STEPHEN YUE Thermomechanical processing of blades and disks can become challenging when the microstructure of the material consists of a high volume fraction of …
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Heat–moisture treatment (HMT) is a widely used method for modifying starch properties with the potential to reduce the digestibility of high-amylose starch (HAS). This study aimed to optimize the HMT conditions for HAS and apply the resulting HMT-HAS to triticale noodles to develop low-glycemic-index products. HMT significantly increased the …
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In this study, the effect of heat-treatment parameters, including solution temperature, solution time, aging temperature, and aging time, on the mechanical properties was optimized by using the Taguchi …
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Journal Article: Wire-arc additive manufacturing and post-heat treatment optimization on microstructure and mechanical properties of Grade 91 steel ... Effect of Postweld Heat Treatment Conditions on Mechanical Properties of 9Cr-1Mo-V Steel Welds for Pressure Vessel. Tanaka, Tomohiro; Abe, Masamitsu; Nakatani, Mitsuyoshi;
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Composition design and post-heat treatment optimization are the two main aspects of materials development [1, 2].Materials Genome highlights the importance of the rapid generation of databases to accelerate the materials development [1, 3].Therefore, high-throughput (HT) modeling and experimentation are critical to design efficiency [4].In …
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As per Fig. 8(a) and Fig. 8(b), the highest Rockwell hardness of 32.5 RHN was obtained for the solution temperature of 530°C and thermal aging at 180°C which is an improvement of 33.57% of RHN ...
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in length. The heat treatments were carried out using an electric resistance box furnace with an open-air atmosphere. A full 24 and 25 DOE with one replica was performed for the heat treatment optimization of the CA-6NM cast alloy class A and class B, respectively. The analyzed factors for class A were austenitizing and tempering temperatures as
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Two sample categories were examined with different thermomechanical histories, one deformed and one deformed and annealed, in order to verify if the ultimate …
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specimen for property characterization, heat treatment optimization, and the design of forming tools. II. EEIEA A. Material and Heat Treatment The material used in the investigation was low-Si-con-tent AISI H11-type hot-work tool steel with the following composition (wt pct): 0.36 pct C, 0.22 pct Si, 0.25 pct Mn, 5.02 pct Cr, 1.25 pct Mo, and 0 ...
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The solution heat treatment (SHT) is an important step in hot forming and in-die quenching (HFQ) process. Herein, the SHT of cold-rolled AA7075-H18 alloy sheets is carried out in the temperature range of 462-518 °C for 0.9-29 min, and a response surface model based on strength and toughness is established. The results reveal that the …
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Zhang et al. [16] revealed that careful optimization of the heat treatment parameters can confer good overall mechanical properties on carburized steels. Carburizing heat treatment of bearing steel has been extensively studied by many scholars. However, a comprehensive scientific understanding of the various parameters in carburizing heat ...
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1. Introduction. Heat treatment is a property enhancement process that deals with the heating and cooling of metal in a solid-state. The objective of heat treatment is to impart certain desirable properties on metals (Ahaneku et al., 2012).Heat treatment can be performed on metals, ceramics, and composite material.
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In the present research work, the heat treatment technique of 7175 aluminum alloy has been optimized as a trial by a classical gradient method and an …
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The aim of this research was to determine the effect of vacuum-heat-treatment process parameters on the material properties and their correlations for low-Si-content AISI H11-type hot-work tool steel using a single Circumferentially Notched and fatigue Pre-cracked Tensile Bar (CNPTB) test specimen. The work was also focused on …
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Optimization for the heat-treatment technique of 7175 aluminum alloy In the present investigation, m =27, n =3, C = σ 1 + σ 2 . For the GA, working over 1000 iterations, the optimization results are given in Table 4 .
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the post-heat treatments of the LPBF-fabricated IN718 revealed that the solution heat treatment at 1000 C achieved the optimum strength due to the higher volume fraction of c¢ and c¢¢ phases with no precipitation of d-phase, as compared with those of solution heat treatment at 930 C and 954 C (Ref 33).
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