Hui Song

TL;DR: In this paper, the effects of Zn/Mg ratios on microstructure and mechanical properties of Al-Zn-Mg-Cu alloys aged at 150 °C have been investigated by using tensile tests, optical metallography, scanning electron microscopy, transmission electron microscope and atom probe tomography analyses.

TL;DR: In this paper, a detailed investigation on additively manufactured H13 was conducted at 600 oC and 700 oC, and it was found that the selective laser melted H13 showed unsatisfactory tensile properties in the as-printed condition, especially in terms of the elongation at fracture.

TL;DR: In this article, the effects of Ag addition on the age hardening and precipitation behavior of aluminum alloy 7075 were investigated using APT and transmission electron microscopy (TEM) and atom probe tomography (APT) techniques.

TL;DR: In this article, the ageing precipitates and strengthening effects of Al-Zn-Mg-Cu alloys with different Zn contents were investigated and the results showed that increasing Zn content can significantly improve the age-hardening response and influence the type of precipitates as well.

TL;DR: In this article, the aging characteristics and strengthening behavior of a low-carbon medium-Mn Cu precipitation-strengthened steel was described, and Atom probe tomography (APT) was employed to characterize the evolution of Cu-rich precipitates in terms of mean radius, number density and volume fraction.