Influence of Upgoing Quenching on Structure and Corrosion Properties of Alloy D16

This paper presents the results of a study on the influence of heat treatment, including water quenching, cooling of a quenched alloy in liquid nitrogen, holding in liquid nitrogen, and upgoing quenching (heating in hot mineral oil), and natural or artificial aging on the structure, residual stresses, and anticorrosion properties of a D16 deformed aluminum alloy. The structure is studied by light microscopy, transmission electron microscopy, and X-ray diffraction. Residual stresses are determined by the hole drilling method. The corrosion properties are examined using polarization resistance, zero resistance amperometry, electrochemical impedance spectroscopy, and metallography.