Effect of Aging on the Microstructure and Mechanical Properties of 1460 Alloy

被引：6

作者：

Ma, Juan ^{[1
]}

Yan, De-Sheng ^{[1
]}

Rong, Li-Jian ^{[1
]}

Li, Yi-Yi ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2015年 / 28卷 / 04期

关键词：

Al-Li alloy; Precipitate; Precipitation hardening process; Mechanical property; TRANSMISSION-ELECTRON-MICROSCOPY; AL-LI ALLOYS; CU ALLOYS; ZR ALLOY; EVOLUTION; STRENGTH; BEHAVIOR;

D O I：

10.1007/s40195-015-0219-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Effects of the aging temperature on the hardening response, the tensile properties and the precipitate microstructure evolution of 1460 alloy were studied in this work. It was found that Al-3 (Sc, Zr) and delta' (Al3Li) phases were precipitated from the matrix at the very early aging stage, while the precipitation of T1 (Al2CuLi) and theta' (Al2Cu) was much slower than that of the delta' phase. When aging at higher temperature (160 and 190 degrees C), the delta', Tl and theta' phases tended to form simultaneously and grow up very quickly. Conversely, the delta' and theta '' (Al2Cu) phases were precipitated separately and more dispersive at lower aging temperature (130 degrees C). Taken together, the alloy aged at 160 degrees C exhibited improved mechanical properties owing to the uniform dispersion of the fine Tl precipitates.

引用

页码：454 / 459

页数：6

共 18 条

[1] Effects of Multiple Strengthening Treatments on Mechanical Properties and Stability of Nanoscale Precipitated Phases in an Aluminum-Copper-Lithium Alloy [J].

Ahmadi, S. ;

Arabi, H. ;

Shokuhfar, A. .

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2010, 26 (12) :1078-1082

[2] Formation mechanisms of precipitates in an Al-Cu-Li-Zr alloy and their effects on strength and electrical resistance of the alloy [J].

Ahmadi, S. ;

Arabi, H. ;

Shokuhfar, A. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 484 (1-2) :90-94

[3] Atomic structure of T1 precipitates in Al-Li-Cu alloys revisited with HAADF-STEM imaging and small-angle X-ray scattering [J].

Donnadieu, P. ;

Shao, Y. ;

De Geuser, F. ;

Botton, G. A. ;

Lazar, S. ;

Cheynet, M. ;

de Boissieu, M. ;

Deschamps, A. .

ACTA MATERIALIA, 2011, 59 (02) :462-472

[4] Atom probe tomography and transmission electron microscopy characterisation of precipitation in an Al-Cu-Li-Mg-Ag alloy [J].

Gault, B. ;

de Geuser, F. ;

Bourgeois, L. ;

Gabble, B. M. ;

Ringer, S. P. ;

Muddle, B. C. .

ULTRAMICROSCOPY, 2011, 111 (06) :683-689

[5] STRUCTURE AND PROPERTIES DURING AGING OF AN ULTRA-HIGH STRENGTH AL-CU-LI-AG-MG ALLOY [J].

GAYLE, FW ;

HEUBAUM, FH ;

PICKENS, JR .

SCRIPTA METALLURGICA ET MATERIALIA, 1990, 24 (01) :79-84

[6] Study of isothermal δ′ (Al3Li) precipitation in an Al-Li alloy by thermoelectric power [J].

Gutierrez-Urrutia, I. .

JOURNAL OF MATERIALS SCIENCE, 2011, 46 (09) :3144-3150

[7] Effect of ageing time on strength and microstructures of an Al-Cu-Li-Zn-Mg-Mn-Zr alloy [J].

Li, Hongying ;

Tang, Yi ;

Zeng, Zaide ;

Zheng, Ziqiao ;

Zheng, Feng .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 498 (1-2) :314-320

[8]

Lin Z.Q., 1992, J MAT, V3, P10

[9]

Liu B.X., 2001, AEROSP SCI TECHNOL, V3, P49

[10] Effect of Sc addition on microstructure and mechanical properties of 1460 alloy [J].

Ma, Juan ;

Yan, Desheng ;

Rong, Lijian ;

Li, Yiyi .

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2014, 24 (01) :13-18

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