时效早期Al-Mg-Si合金的组织和析出相的演变

郑亚亚, 罗兵辉, 柏振海

Evolution of Microstructure and Precipitates of Al-Mg-Si Alloy during Early Aging Process

ZHENG Yaya, LUO Binghui, BAI Zhenhai

表1 Al-Mg-Si合金中已知析出相的基本概述[16~22]

Table 1 Basic summary of known precipitates in Al-Mg-Si alloy

Precipitate type Structure Size/nm Morphology Lattice parameter Clusters Unresolved Unknown Spherical Unresolved GP zones Unresolved ∼5 Needle-like Unresolved GP zones Monoclinic - Needle-like Unresolved β″ Base-centered monoclinic ∼4×4×50 Needle-like a=1.534 nm, c=0.683 nm, b=0.405 nm, β=106° β″ Monoclinic ∼4×4×50 Needle-like a=0.650 nm, c=0.760 nm, b=0.405 nm, γ=70° β″ Base-centered monoclinic ∼4×4×50 Needle-like a=1.516 nm, c=0.674 nm, b=0.405 nm, β=105.3°