Pointing out at the new heat treatment process which is vacuum heat treatment, intensive quench, direct forge quench with poly alkaline glycol, electromagnetic processing which …
The process parameters of heat treatment of high-molybdenum-vanadium high-speed steel are optimized. The selection of carbon content and the temperature of M50 are calculated and optimized, and the results show that the range of pouring temperatures, quenching temperatures, annealing temperatures, and tempering temperatures are …
This paper describes an approach and ICT tool developed for manufacturing process energy efficiency optimization, in particular focused on the heat treatment process of steel casting parts.
Two sample categories were examined with different thermomechanical histories, one deformed and one deformed and annealed, in order to verify if the ultimate …
In this paper, based on the principle of heat transfer and thermal elastic-plastic theory, the heat treatment process optimization scheme for face gears is proposed according to the structural characteristics of the face gear and material properties of 12Cr2Ni4 steel. To simulate the effect of carburizing and quenching process on tooth deformation and …
Additionally, the presence of hydrogen during heat treatments was shown to dramatically change gas evolutions, leading to distinctly more lunar-like composition and behavior from JSC-1A simulant.
The heat treatment process of the RE-CLF-1 was finally optimized as two steps: (1) normalizing at 980 °C for 60 min, (2) tempering at 740 °C for 60 min, to get a complete martensitic structure and maintain its good mechanical property.
A selective laser-melted Al-Mn-Sc alloy with 99.9% relative density has been obtained in this work through systematic process optimization. The as-fabricated specimen had the lowest hardness and strength, but the highest ductility. The aging response has shown that 300 °C/5 h is the peak aged condit …
The properties of Al-Cu-Mg alloys simultaneously depend on dissolving the maximum amount of Cu and Mg in the solution treatment and on achieving optimal ageing. The aim of this study is to analyze the effect on an Al-Cu4.5-Mg1.5-Si0.75 alloy, manufactured by continuous casting and hot rolling until achieving a reduction in its cross-section greater …
The research works published on L-PBF of AlSi7Mg focus on optimization of process parameters [ 6 ], properties of lattice structures [ 7 ], thermal and mechanical fatigue properties [ [8], [9], [10] ], fracture toughness [ 11] and corrosion behavior of the alloy [ 12 ]. A few works investigated the effect of different heat treatment schedules on …
The impact of duplex heat treatment settings was examined to optimize the mechanical and wear responses of Ti6Al4V alloys. A multi-objective optimizat…
The four heat treatment parameters, including CP, QT, OT, and TT, are considered as design variables. Utilizing the global optimization capability of the PSO …
The FEA-PSO-BP method for optimizing process parameters to reduce thermal deformation in heat treatment offers a set of parameters that minimize the thermal deformation. This method can be applied to optimize heat treatment process parameters for other types of gears and has significant technical content and broad engineering …
In the study of Ikubanni et al. (2017), quenching media, heating temperature, and soaking time were identified as the major process parameters in the heat treatment …
Salleh et al. (42) studied the optimization of T6 heat treatment for aluminum alloy where they investigated the hardness values for different solution temperatures such as 510°C, 520°C, and 530 ...
The post-WAAM heat treatment process is critical to the anisotropy elimination and property improvement, which is designed and optimized with the help of the CALPHAD (CALculation of PHAse Diagrams)-based thermodynamic modeling in this work.
In order to improve its high temperature performance, RB-SiC ceramics were treated by vacuum heat treatment above 1300 °C to remove free silicon, and then modified by post-impregnation pyrolysis (PIP) process with polycarbosilane (PCS). The porosity, bulk density, and flexural strength of the ceramics were measured system atacially.
In order to address the issue of high temperatures and thermal damages in deep mines, the factors causing downhole heat damage at high temperatures were analyzed, the mine ventilation system was optimized and rebuilt, and a cooling system was established. The proposed cooling system uses mine water as the cooling source, and …
The heat-treatment temperature determines the melting state of the repair agent, the products of the chemical reaction between the repair agent and C/C composites, and the residual thermal stress after cooling. Therefore, an appropriate heat-treatment temperature is crucial to the repair process.
The major aim of heat treatment is to enhance the mechanical properties of steel such as hardness, yield strength, tensile strength, ductility, and impact resistance. Heat treatment of steel involves the combination of controlled heating and cooling operations ( Adeleke et al., 2019 ).
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 …
In order to address the issue of high temperatures and thermal damages in deep mines, the factors causing downhole heat damage at high temperatures were analyzed, the mine ventilation system was opti...
The present study employed numerical simulation technology to investigate the distribution of workpieces within a low-temperature trolley heat furnace and analyze the influence of circulating fan parameters on heat treatment quality. This analysis was integrated with machine learning technology to guide heat treatment production.
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 …
The present study focused on optimising the heat treatment cycle for the Al6082 alloy, which is commonly used in the aerospace, automotive, and construction industries. The optimisation process consisted of two steps: optimising the solution and artificial ageing treatments.
A systematic experimental investigation of the effect of heat-treatment technique on the mechanical properties of 7175 aluminum alloy was carried out. Particularly, an artificial neural network and a genetic algorithm were used to search for the optimum technique, adapted for 7175 aluminum alloy.
Heat Treatment Optimization in Al-Cu-Mg-Si Alloys, with or without Prior Deformation. by. Jose Florentino Alvarez-Antolin. 1,*, Elvira Segurado-Frutos. 1, Hilario Neira-Castaño. 1 …
In this study, the optimal heat treatment condition and the effect of C15 precipitation behavior on thermal conductivity were investigated using Mg 91.98 Al 5 Ca 3 Mn 0.02 alloys. The thermal conductivity saturated at approximately 120 W m −1 K −1 in the shortest time at a heat treatment temperature of 673 K.
Additionally, the presence of hydrogen during heat treatments was shown to dramatically change gas evolutions, leading to distinctly more lunar-like composition and behavior from JSC-1A simulant.
Furthermore, this work is intended to show the potential of the CNPTB test specimen for property characterization, heat treatment optimization, and the design of forming tools.
The optimization of the heat treatment of $hbox {Nb}_ {3}hbox {Sn}$ conductors for toroidal field coils in ITER was attempted to improve the current sharing tem
Abstract. 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 …
Optimization results for the heat treatment. It can be seen that the first three individuals are close to the optimal values, i.e. the optimum heat treatment is 85.1% for the value of deformation, 133.0 min solid solution time and 6 h aging time at 443 K for 7175 aluminum alloy with optimal mechanical properties. 4.2.
A full factorial experimental design was used to study the effect of each parameter involved in the heat treatment of the CA-6NM cast alloy, in order to optimize this process for achieving ...
Considering Zn as one of the alloying elements with high solubility in Al, we investigate the effects of Zn addition and related heat treatment parameters on the mechanical properties of Al–Si–Mg alloys by using a combination of experimental and …
The AM material was compared with a wrought 4340 equivalent and studied in both as-fabricated and heat-treated conditions. Two heat treatments were designed and used to optimize the materials for strength and toughness, respectively.
A full 24and 25DOE 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 well as the holding time in both stages.
