نتایج جستجو برای: ageing heat treatment
تعداد نتایج: 1595727 فیلتر نتایج به سال:
the cold roll bonding of al on aisi 304l stainless steel was carried out to fabricate the al/304l/al clad sheet composites. the maximum bond strength of 20 n/mm was acquired just by 38% reduction, for which the tearing of the aluminum sheet occurred during the peeling test. the microstructural evolution during subsequent postannealing heat treatment was systematically studied based on the impur...
sensitivity of tomato fruits to chilling injury limits its storage and marketability. this study investigated the effect of hot water treatment (hwt) on reducing the consequences of chilling injury (ci) with respect to quality attributes of tomatoes during storage. tomatoes were harvested at three ripening stages: mature green, pink, and red; dipped in hot water at 45°c for 15 min; and stored a...
microalloyed cast steels are a group of microalloyed steels in which reliable mechanical properties could be achieved by heat treatment. in this work, the heat treatment processes were carried out on the cast specimens as the step samples by different thicknesses and zr content. the results show that after homogenization, variations in thickness have no effect on the hardness. also, after hea...
Abstract The production and manufacture of aluminium castings typically involves multiple heat treatment process steps. Simulation tools are very useful to help predict the evolution mechanical properties, improve parameters as a guideline for casting design. In this study, kinetic model, based on Nucleation Growth Theory (CNGT), was developed implemented modelling in simulation tool. Starting ...
The article is devoted to laboratory research on the influence of convective motion as a result thermal losses and their compensation in tanks physical chemical ageing bitumen BND 60/90 90/130. Laboratory tests samples confirmed hypothesis about key role free movement its degradation under conditions maintaining operating temperatures air access. Thus, has functional relationship with from tank...
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