Microstructure evolution during solution annealing of an Al-Zn-Mg-Cu alloy with La additions.

The high-strength 7xxx Al alloys are frequently used due to their excellent properties. To achieve these properties, heat treatment is crucial. In this study, the influence of La on the microstructure evolution of Al-Zn-Mg-Cu alloys during solution annealing, the first step of heat treatment, was investigated.

Interface Reaction between Molten Al99.7 Aluminum Alloy and Various Tool Steels.

During the die-casting process as well as the hot forming process, the tool is subjected to complex thermal, mechanical, and chemical stresses that can cause various types of damage to different parts of the tool. This study was carried out to determine the resistance of various tool steels, i.e.