Selecting quenchants to maximize tensile properties and minimize distortion in aluminum parts

Numerical simulation of immersion quenching process of an engine cylinder head

“…This is motivated by the fact that the Al-alloys have very good mechanical properties combined with high strength-to-weight ratio, which can reduce the overall vehicle weight and, henceforth, improve the fuel efficiency. Heat treatment process is one of the important methods for improving the mechanical properties of the aluminum alloys, which in this context can gravely influence the functionalities of the final product design [2][3][4][5]. The necessary specification concerning the strength of the alloy are commonly met by precipitation hardening, which involves a specific heat treatment process followed by an aging treatment at an specified intermediate temperature [2,6].…”

“…Heat treatment process is one of the important methods for improving the mechanical properties of the aluminum alloys, which in this context can gravely influence the functionalities of the final product design [2][3][4][5]. The necessary specification concerning the strength of the alloy are commonly met by precipitation hardening, which involves a specific heat treatment process followed by an aging treatment at an specified intermediate temperature [2,6]. Among various heat treatment methods available, direct immersion quenching process is a packing limit subcool subcool temperature burn burn out lim limit wet wetting packing limit i index dry dry packing limit widely adopted procedure to minimize the formation of undesirable thermal and transformational gradients which may lead to distortion and cracking [2,4].…”

“…The necessary specification concerning the strength of the alloy are commonly met by precipitation hardening, which involves a specific heat treatment process followed by an aging treatment at an specified intermediate temperature [2,6]. Among various heat treatment methods available, direct immersion quenching process is a packing limit subcool subcool temperature burn burn out lim limit wet wetting packing limit i index dry dry packing limit widely adopted procedure to minimize the formation of undesirable thermal and transformational gradients which may lead to distortion and cracking [2,4]. In this scenario, common liquids such as water are very frequently used for immersion quenching (cooling) applications owing to their reliable properties and availability.…”

Quench sensitivity and tensile property inhomogeneity in 7010 forgings

“…Improved predictions of properties during continuous cooling can be made by utilising quench factor analysis. [6,7]. Quench factor analysis accounts for all the time spent beneath the solvus during continuous cooling and relies on measured or predicted cooing curve data and the availability of a TTP curve for the alloy in question evaluated in the property of interest.…”

Caracterização de óleos vegetais como alternativa para meios de resfriamento utilizados no tratamento térmico de têmpera

“…o HP Castrol/Renault (Bodin & Segerberg, 1993), o método de Liscic (Liscic, 1988), o Fator Q de Bates (Bates, 1987), o método CTA (Réti et aI., 1993) Mudanças causadas por oxidação podem provocar nítidos efeitos nas propriedades físicas, químicas e fisico-químicas dos óleos. Hasson (1994), aponta três mudanças nas propriedades de um óleo durante o seu uso:…”