This paper presents an explanation related to experimental testing in the form of tensile properties Al 6061. 6061 was heat treated by precipitation hardening method. The consisted T4 and T6 treatment. samples were heat-treated at a temperature 430°C for 2 hours, then cooled slowly room temperature. conducted 530°C followed rapid cooling water medium natural ageing 70°C six days. Temperature is...

fatigue behavior of a vanadium microalloy steel has been studied in this research. here, microstructure constituents were considered which essentially are dependent on the heat treatment conditions. the results of high cycle fatigue tests revealed that heat treatment procedure and cooling rates have significant effects on fatigue properties. optimal heat treatment cycle of the microalloyed stee...

The structure formation in acid promoted polycondensation and particularly in alkaline post-treatment with urea was studied by 13C NMR spectroscopy in the three-step synthesis of ureaformaldehyde resins. Trishydroxymethyl urea was identified as the constituent of the mixture of hydroxylmethylated urea derivatives obtained in alkaline conditions. The formation of methylenes linked to secondary o...

Heat treatment has a significant impact on the microstructure and mechanical properties of Al-Mg-Si alloys. The present study presents first Phase-Field modelling approach recrystallisation grain growth mechanism during annealing. It focuses precipitate fraction, radius, Mg-Si concentration in matrix phase, which are used as input data for calculation yield strength hardness at end different ag...

Microalloyed steels containing copper in order to promote precipitation hardening are one of the approaches adopted to develop new materials with high mechanical strength but minimized carbon content to assure good weldability. Besides that, the thermomechanical processing of such alloys can eliminate the subsequent quench and tempering heat treatments required by conventional steels. The effec...

Heat treatment is an eco-friendly and efficient way to improve the defective properties of wood, such as its hygroscopic nature, lack dimensional stability, low resistance against biological degradation, produce a green sustainable wood material for construction buildings. However, these treatments alter substrates could influence performance coating products necessary maintain surface features...

Fouling is an age-old problem in many process industries. It is responsible for large energy and throughput losses, resulting in financial penalties and negative environmental impact. One effective mitigation strategy is the regular cleaning of fouled heat transfer devices. Optimization tools can be used to schedule the timing of cleaning actions in order to minimize the cost of fouling and imp...

Natural ageing has a major influence on the properties of paper, while light, heat, and humidity are environmental influences that most disrupt stability paper. This research focuses changes in straw-containing papers caused by accelerated ageing. The were made laboratory mixing straw pulp with recycled fibers different weight ratios artificially aged dry-heat treatment (thermal oxidation) UV r...

An analysis of the end use energy in EU reveals that industry is one three dominant categories, which accounts for 26.1% final energy. In case aluminium industry, approximately 70% consumption due to heat and thermal processes, highlighting a vast potential waste recovery technologies. Within die casting liquid cast, formed, cooled, further processed within process, includes sub-processes: solu...