Improved Microstructures and Mechanical Properties of 2024 Aluminum Alloy Produced by a Reciprocating Extrusion Method

Evolution of microstructure and strengthening of 7050 Al alloy by ECAP combined with heat-treatment

“…In order to cater for the developing demand of aerospace, it often requires to modify alloy composition, add some different grain refining elements [1][2][3], or achieve the fine microstructures by extensive deformation [4][5][6], such as forging, accumulative rolling, compressed-torsion, cyclic extrusion pressing and so on. Equal-channel angular pressing (ECAP) is preferred to produce ultrafine-grained bulk samples in a fully dense condition without changing the cross-sectional dimensions of the samples.…”

Evaluation of precipitation reaction in 2024 Al–Cu alloy through ultrasonic parameters

“…• In region B (5-10 h), the hardness is increased further by the ordering of larger clumps of Cu atoms on certain planes of the Al-matrix. During this ageing partially coherent S precipitate formed with the matrix associated with the S precipitate which is the non-coherent brittle phase [26,27]. This produces an increased strain field in the matrix and a further increase in hardness.…”

Microstructure and fatigue characteristics of direct chill cast and electromagnetic cast 2024 Al alloy ingots

“…The GP [ II] zones are stable over a wider range of aging temperature. [10,11] Figure 5 shows the differential scanning calorimetry (DSC) curve, taken at a heating rate of 10 °C per minute from 100 °C to 550 °C. [10,11] Figure 5 shows the differential scanning calorimetry (DSC) curve, taken at a heating rate of 10 °C per minute from 100 °C to 550 °C.…”