Optimization of quench history of aluminum parts for superior mechanical properties

Influence of grain structure on quench sensitivity relative to localized corrosion of high strength aluminum alloy

“…The strength and hardness of these alloys after aging generally decrease with the decrease of quench rate [2e4]. For semi-products with large section, this problem is practically important because quench rate in the center layer is often lower due to the large size or requirement of controlling residual stress [5,6]. Therefore, a number of investigations have been focused on quench sensitivity relative to mechanical properties especially strength and hardness, which receives effect from many factors, such as chemical compositions, grain structure, homogenization, deformation and solution heat treatment [7e13].…”

Nucleate Boiling in Large Arrays of Impinging Water Sprays

“…Increased critical heat flux is also often associated with spray impingement. This technique has been traditionally employed for the controlled quenching of steel and nonferrous parts [1][2][3]. More recently, spray impingement of dielectric fluids has been considered for the evaporative cooling of novel electronic components [4][5][6][7][8].…”

“…Publications on spray impingement heat transfer, on the other hand, have only increased recently. Most of the earlier investigations have been motivated by well-defined technological demands [1,2,7,8]. Recent literature on the subject also involves studies on modeling [3,13] and intermittent impingement [14].…”

Thermo-mechanical processing of aluminum profiles by integrated electromagnetic compression subsequent to hot extrusion

“…Conventional metal extrusion is used to produce straight, semifinished products with a constant cross section in mass production (Laue and Stenger, 1976), which exhibit homogeneous mechanical properties over the length and cross section (Hall and Mudawar, 1996). But in general, the loading conditions of construction elements differ locally, for example the tubular impact absorber which is placed behind the bumpers.…”