Investigation on microstructure and properties of Al-Zn-Mg-Cu-Zr-0.5Er alloy profile

被引：0

作者：

Wang, Shao-Hua ^{[1
]}

Ma, Zhi-Feng ^{[1
]}

Zhang, Xian-Feng ^{[1
]}

Sun, Gang ^{[1
]}

Feng, Zhao-Hui ^{[1
]}

Li, Wei ^{[1
]}

Lu, Zheng ^{[1
]}

机构：

[1] Beijing Institute of Aeronautical Materials

来源：

Cailiao Gongcheng/Journal of Materials Engineering | 2014年 / 03期

关键词：

Al-Zn-Mg-Cu-Zr alloy; Er; Mechanical property; Microstructure;

D O I：

10.3969/j.issn.1001-4381.2014.03.005

中图分类号：

学科分类号：

摘要：

The microstructure and mechanical properties of Al-Zn-Mg-Cu-Zr-0.5Er alloy profile was studied using by optical microscopy (OM), scanning electron microscopy (SEM), electronic back-scattered diffraction technique (EBSD), transmission electron microscopy (TEM) and tensile test. Most of element Er in the alloy profile is the form of ternary Al8Cu4Er phase. The particles can strongly pin the dislocation and grain boundaries, and effectively restrain the recrystallization and grain increase of the alloy. Because the cracks initiate near remainder Al8Cu4Er phases due to the piling up of dislocation, the strength of the alloy profile decreases obviously. However, electrical conductivity increases slightly.

引用

页码：27 / 33

页数：6

共 14 条

[1] Li C.G., Wu S.J., Dai S.L., Et al., Application and development of advanced aluminum alloy in aerospace industry, The Chinese Journal of Nonferrous Metals, 12, 1, pp. 14-21, (2002)
[2] Chen C.Q., Development of ultrahigh-strength aluminum alloy, The Chinese Journal of Nonferrous Metals, 12, SUPPL.1, pp. 22-27, (2002)
[3] Wang S.Q., Wang S.H., Ma Z.F., Et al., Investigation on deformation behavior of a new type Al-Zn-Mg-Cu-Zr alloy, Journal of Materials Engineering, 6, pp. 11-15, (2012)
[4] Senkov O.N., Shagiev M.R., Senkova S.V., Precipitation of Al<sub>3</sub>(Sc, Zr) particles in an Al-Zn-Mg-Cu-Sc-Zr alloy during conventional solution heat treatment and its effect on tensile properties, Acta Materialia, 56, 15, pp. 3723-3738, (2008)
[5] (2003)
[6] Wu Z.G., Song M., He Y.H., Effects of Er on the microstructure and mechanical properties of an as-extruded Al-Mg alloy, Materials Science and Engineering: A, 504, 1-2, pp. 183-187, (2009)
[7] Xu G.F., Mou S.Z., Yang J.J., Et al., Effect of trace rare earth element Er on Al-Zn-Mg alloy, Transactions of Nonferrous Metals Society of China, 16, 3, pp. 598-603, (2006)
[8] (2004)
[9] Yang J.J., Nie Z.R., Jin T.N., Et al., Form and refinement mechanism of element Er in Al-Zn-Mg alloy, The Chinese Journal of Nonferrous Metals, 14, 4, pp. 620-626, (2004)
[10] (2004)

← 1 2 →