In this work, we studied the transformations involving coherent (θ”/S”), semicoherent (θ’/S’), and incoherent (θ/S) precipitates (θ = Al 2 Cu, S CuMg) formed during heat treatment of an annealed nanostructured powder 2024 produced by cryogenic milling. These form over a wide temperature range (300–500 °C) depending on chemical composition. They influence grain growth sintering may facilitate fo...

To increase the erosion resistance of 2024 Al alloys, plasma nitriding surface treatment was used. Nitrogen and argon gases are injected into an evacuated chamber until pressure reaches 15 Pa. The process requirements for normal were heating at 440˚C 8 hours, low voltage 650 V, current 25 mA, gas consumption, no air pollution. A continuous layer AlN formed. microhardness reached a maximum value...