Effect of Nano-Particle Addition on Grain Structure Evolution of Friction Stir-Processed Al 6061 During Postweld Annealing

Junfeng Guo; Bing Yang Lee; Zhenglin Du; Guijun Bi; Ming Jen Tan; Jun Wei

doi:10.1007/s11837-016-1991-1

Effect of Nano-Particle Addition on Grain Structure Evolution of Friction Stir-Processed Al 6061 During Postweld Annealing

Junfeng Guo^*
, Bing Yang Lee
, Zhenglin Du
, Guijun Bi
, Ming Jen Tan
, Jun Wei

^*Corresponding author for this work

Agency for Science, Technology and Research, Singapore
Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The fabrication of nano-composites is challenging because uniform dispersion of nano-sized reinforcements in metallic substrate is difficult to achieve using powder metallurgy or liquid processing methods. In the present study, Al-based nano-composites reinforced with Al₂O₃ particles have been successfully fabricated using friction stir processing. The effects of nano-Al₂O₃ particle addition on grain structure evolution of friction stir-processed Al matrix during post-weld annealing were investigated. It was revealed that the pinning effect of Al₂O₃ particles retarded grain growth and completely prevented abnormal grain growth during postweld annealing at 470°C. However, abnormal grain growth can still occur when the composite material was annealed at 530°C. The mechanism involved in the grain structure evolution and the effect of nano-sized particle addition on the mechanical properties were discussed therein.

Original language	English
Pages (from-to)	2268-2273
Number of pages	6
Journal	JOM
Volume	68
Issue number	8
DOIs	https://doi.org/10.1007/s11837-016-1991-1
State	Published - 1 Aug 2016
Externally published	Yes

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title = "Effect of Nano-Particle Addition on Grain Structure Evolution of Friction Stir-Processed Al 6061 During Postweld Annealing",

abstract = "The fabrication of nano-composites is challenging because uniform dispersion of nano-sized reinforcements in metallic substrate is difficult to achieve using powder metallurgy or liquid processing methods. In the present study, Al-based nano-composites reinforced with Al2O3 particles have been successfully fabricated using friction stir processing. The effects of nano-Al2O3 particle addition on grain structure evolution of friction stir-processed Al matrix during post-weld annealing were investigated. It was revealed that the pinning effect of Al2O3 particles retarded grain growth and completely prevented abnormal grain growth during postweld annealing at 470°C. However, abnormal grain growth can still occur when the composite material was annealed at 530°C. The mechanism involved in the grain structure evolution and the effect of nano-sized particle addition on the mechanical properties were discussed therein.",

author = "Junfeng Guo and Lee, \{Bing Yang\} and Zhenglin Du and Guijun Bi and Tan, \{Ming Jen\} and Jun Wei",

note = "Publisher Copyright: {\textcopyright} 2016, The Minerals, Metals \& Materials Society.",

year = "2016",

month = aug,

day = "1",

doi = "10.1007/s11837-016-1991-1",

language = "英语",

volume = "68",

pages = "2268--2273",

journal = "JOM",

issn = "1047-4838",

publisher = "Minerals, Metals and Materials Society",

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}

TY - JOUR

T1 - Effect of Nano-Particle Addition on Grain Structure Evolution of Friction Stir-Processed Al 6061 During Postweld Annealing

AU - Guo, Junfeng

AU - Lee, Bing Yang

AU - Du, Zhenglin

AU - Bi, Guijun

AU - Tan, Ming Jen

AU - Wei, Jun

PY - 2016/8/1

Y1 - 2016/8/1

N2 - The fabrication of nano-composites is challenging because uniform dispersion of nano-sized reinforcements in metallic substrate is difficult to achieve using powder metallurgy or liquid processing methods. In the present study, Al-based nano-composites reinforced with Al2O3 particles have been successfully fabricated using friction stir processing. The effects of nano-Al2O3 particle addition on grain structure evolution of friction stir-processed Al matrix during post-weld annealing were investigated. It was revealed that the pinning effect of Al2O3 particles retarded grain growth and completely prevented abnormal grain growth during postweld annealing at 470°C. However, abnormal grain growth can still occur when the composite material was annealed at 530°C. The mechanism involved in the grain structure evolution and the effect of nano-sized particle addition on the mechanical properties were discussed therein.

AB - The fabrication of nano-composites is challenging because uniform dispersion of nano-sized reinforcements in metallic substrate is difficult to achieve using powder metallurgy or liquid processing methods. In the present study, Al-based nano-composites reinforced with Al2O3 particles have been successfully fabricated using friction stir processing. The effects of nano-Al2O3 particle addition on grain structure evolution of friction stir-processed Al matrix during post-weld annealing were investigated. It was revealed that the pinning effect of Al2O3 particles retarded grain growth and completely prevented abnormal grain growth during postweld annealing at 470°C. However, abnormal grain growth can still occur when the composite material was annealed at 530°C. The mechanism involved in the grain structure evolution and the effect of nano-sized particle addition on the mechanical properties were discussed therein.

UR - https://www.scopus.com/pages/publications/84975504984

U2 - 10.1007/s11837-016-1991-1

DO - 10.1007/s11837-016-1991-1

M3 - 文章

AN - SCOPUS:84975504984

SN - 1047-4838

VL - 68

SP - 2268

EP - 2273

JO - JOM

JF - JOM

IS - 8

ER -

Effect of Nano-Particle Addition on Grain Structure Evolution of Friction Stir-Processed Al 6061 During Postweld Annealing

Abstract

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