Microstructure of differently treated Al-Mg-Sc-Zr alloys

Jie Zhang; Zhimin Yin; Yonghong Zhang; Yongzheng Gao; Qinglin Pan

doi:10.1007/s11771-997-0024-1

Journal of Central South University ›› 1997, Vol. 4 ›› Issue (1) : 24 -27. DOI: 10.1007/s11771-997-0024-1

Article

Microstructure of differently treated Al-Mg-Sc-Zr alloys

Author information +

History +

PDF

Abstract

The microstructures of different treated Al-5Mg-0.2Sc-0.1Zr alloys have been studied with optical microscopy and transmission electron microscope (TEM). Coherent particles with the matrix were found in as-cast sample, composite Al₃Sc/Al₃Zr particles were found after 13 h homogenized treatment under 470 °C. Coherent precipitates pinned dislocations and low-angle grain boundaries, and then restrained recrystallization. All kinds of particles of different treatments were not larger than 40 nm. After high-temperature stabilization treatments, most particles remain coherent with the matrix. The reasons of microstructure change at different treated conditions have been analyzed.

Keywords

Al-Mg-Sc-Zr alloy / microstructure / Al₃(Sc, Zr) / coherent and non-coherent

Cite this article

Download citation ▾

Jie Zhang, Zhimin Yin, Yonghong Zhang, Yongzheng Gao, Qinglin Pan. Microstructure of differently treated Al-Mg-Sc-Zr alloys. Journal of Central South University, 1997, 4(1): 24-27 DOI:10.1007/s11771-997-0024-1