Details

Autor(en) / Beteiligte

• Tao Liu Chun-nian He Gen Li Xin Meng Chun-sheng Shi Nai-qin Z hao

Titel

Microstructural evolution in AI-Zn-Mg-Cu-Sc-Zr alloys during short-time homogenization

Ist Teil von

• 矿物冶金与材料学报：英文版, 2015, Vol.22 (5), p.516-523

Erscheinungsjahr

2015

Quelle

SpringerLink

Beschreibungen/Notizen

• Abstract： Microstructural evolution in a new kind of aluminum （A1） alloy with the chemical composition of AI-8.82Zn-2.08Mg- 0.80Cu-3.31Sc-0.3Zr was investigated. It is found that the secondary phase MgZn2 is completely dissolved into the matrix during a short homogenization treatment （470℃, 1 h）, while the primary phase A13（Sc,Zr） remains stable. This is due to Sc and Zr additions into the A1 al- loy, high Zn/Mg mass ratio, and low Cu content. The experimental findings fit well with the results calculated by the homogenization diffusion kinetics equation. The alloy shows an excellent mechanical performance after the short homogenization process followed by hot-extrusion and T6 treatment. Consequently, a good combination of low energy consumotion and favorable mechanical properties is obtained.