Abnormal precipitation behavior in T6 melt-spun AlMgCu ribbon

被引：5

作者：

Chen, Zhong-wei ^{[1
]}

Tang, Ming-jun ^{[1
]}

Li, Shi-shun ^{[1
]}

Feng, Zong-qiang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2014年 / 24卷 / 01期

关键词：

AlCuMg alloy; melt spinning; precipitation; amorphous; CU-MG ALLOYS; S-PHASE; ADDITIONS; AG; OMEGA;

D O I：

10.1016/S1003-6326(14)63023-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The constituent of precipitations phases of aged melt-spun AlMgCu ribbons was characterized by high-resolution transmission electron microscopy and microhardness test. The cooling rate of as melt-spun ribbon was estimated to be 1.60x10(5) K/s from the empirical relation. The samples were aged at 200 degrees C for 16 h after solution treatment. Two precipitation phases, i.e. Al2CuMg and abnormal amorphous SiO2 were identified in the T6 melt-spun AlMgCu ribbon. The crystal structure and stoichiometric composition of Al2CuMg phase are in good agreement with the reference results [WANG et al (2007; 2005)]. The combined experiments show that the formation of abnormal amorphous SiO2 appears to be associated with the higher cooling rate in melt-spinning process and has no significant effect on the peak hardness.

引用

页码：22 / 27

页数：6

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