Friction stir weld of 2060 Al–Cu–Li alloy: microstructure and mechanical properties

B. Cai; Z.Q. Zheng; D.Q. He; S.C. Li; H.P. Li

doi:10.1016/j.jallcom.2015.02.124

Friction stir weld of 2060 Al–Cu–Li alloy: microstructure and mechanical properties

B. Cai, Z.Q. Zheng, D.Q. He, S.C. Li, H.P. Li

Metallurgy and Materials

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46 Citations (Scopus)

Abstract

This paper investigated the microstructural and mechanical properties of 2060 Al–Cu–Li alloy and its sound friction stir joints. The base materials present large pan-cake grains whereas the nugget zone of friction stir weld exhibits fine grain structure. Dispersions are aligned along rolling direction in the base material. They were re-distributed and uniformly decorated within the weld nugget. The base material is mainly strengthened by T1 precipitate with small amounts of θ′ and S′. The various strengthening precipitates were dissolved in the nugget zone where dense dislocations and nano-sized co-clusters were found. Additionally, the hardness, tensile strength and fatigue life limit of the joint are measured.

Original language	English
Pages (from-to)	19-27
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	649
Early online date	14 Mar 2015
DOIs	https://doi.org/10.1016/j.jallcom.2015.02.124
Publication status	Published - 15 Nov 2015

Keywords

Friction stir welding
Aluminum lithium alloys
Microstructure
Precipitation

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title = "Friction stir weld of 2060 Al–Cu–Li alloy: microstructure and mechanical properties",

abstract = "This paper investigated the microstructural and mechanical properties of 2060 Al–Cu–Li alloy and its sound friction stir joints. The base materials present large pan-cake grains whereas the nugget zone of friction stir weld exhibits fine grain structure. Dispersions are aligned along rolling direction in the base material. They were re-distributed and uniformly decorated within the weld nugget. The base material is mainly strengthened by T1 precipitate with small amounts of θ′ and S′. The various strengthening precipitates were dissolved in the nugget zone where dense dislocations and nano-sized co-clusters were found. Additionally, the hardness, tensile strength and fatigue life limit of the joint are measured.",

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T1 - Friction stir weld of 2060 Al–Cu–Li alloy

T2 - microstructure and mechanical properties

AU - Cai, B.

AU - Zheng, Z.Q.

AU - He, D.Q.

AU - Li, S.C.

AU - Li, H.P.

PY - 2015/11/15

Y1 - 2015/11/15

N2 - This paper investigated the microstructural and mechanical properties of 2060 Al–Cu–Li alloy and its sound friction stir joints. The base materials present large pan-cake grains whereas the nugget zone of friction stir weld exhibits fine grain structure. Dispersions are aligned along rolling direction in the base material. They were re-distributed and uniformly decorated within the weld nugget. The base material is mainly strengthened by T1 precipitate with small amounts of θ′ and S′. The various strengthening precipitates were dissolved in the nugget zone where dense dislocations and nano-sized co-clusters were found. Additionally, the hardness, tensile strength and fatigue life limit of the joint are measured.

AB - This paper investigated the microstructural and mechanical properties of 2060 Al–Cu–Li alloy and its sound friction stir joints. The base materials present large pan-cake grains whereas the nugget zone of friction stir weld exhibits fine grain structure. Dispersions are aligned along rolling direction in the base material. They were re-distributed and uniformly decorated within the weld nugget. The base material is mainly strengthened by T1 precipitate with small amounts of θ′ and S′. The various strengthening precipitates were dissolved in the nugget zone where dense dislocations and nano-sized co-clusters were found. Additionally, the hardness, tensile strength and fatigue life limit of the joint are measured.

KW - Friction stir welding

KW - Aluminum lithium alloys

KW - Microstructure

KW - Precipitation

UR - http://linkinghub.elsevier.com/retrieve/pii/S0925838815005642

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DO - 10.1016/j.jallcom.2015.02.124

M3 - Article

SN - 0925-8388

VL - 649

SP - 19

EP - 27

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Friction stir weld of 2060 Al–Cu–Li alloy: microstructure and mechanical properties

Abstract

Keywords

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