Friction stir welding parameters: A tool for controlling abnormal grain growth during subsequent heat treatment

Moataz M. Attallah; Hanadi G. Salem

doi:10.1016/j.msea.2004.08.059

Friction stir welding parameters: A tool for controlling abnormal grain growth during subsequent heat treatment

Moataz M. Attallah, Hanadi G. Salem^*

^*Corresponding author for this work

Metallurgy and Materials

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

132 Citations (Scopus)

Abstract

Recent investigations showed that the fine weld nugget grain structure of friction stir welds (FSW) undergoes abnormal grain growth (AGG) in the post-weld solution heat-treated condition. This significantly deteriorates the strength of FSW of high-strength heat-treatable Al-alloys. In the current research, various welds of AA2095 sheets were prepared by manipulating the FSW parameters, and subsequently heat-treated to investigate the influence of the process parameters (feed rate and tool rotation speed) on the extent of AGG. Characterization of the microstructure and tensile properties revealed that the tool rotational speed and the feed rate appreciably affect the extent of AGG. The higher the rotation speed the lower the AGG at low-to-intermediate feed rates.

Original language	English
Pages (from-to)	51-59
Number of pages	9
Journal	Materials Science and Engineering A
Volume	391
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2004.08.059
Publication status	Published - 25 Jan 2005

Keywords

Abnormal grain growth
Friction stir welding
Post-weld heat treatment
Room temperature tensile properties

ASJC Scopus subject areas

General Materials Science

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10.1016/j.msea.2004.08.059

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title = "Friction stir welding parameters: A tool for controlling abnormal grain growth during subsequent heat treatment",

abstract = "Recent investigations showed that the fine weld nugget grain structure of friction stir welds (FSW) undergoes abnormal grain growth (AGG) in the post-weld solution heat-treated condition. This significantly deteriorates the strength of FSW of high-strength heat-treatable Al-alloys. In the current research, various welds of AA2095 sheets were prepared by manipulating the FSW parameters, and subsequently heat-treated to investigate the influence of the process parameters (feed rate and tool rotation speed) on the extent of AGG. Characterization of the microstructure and tensile properties revealed that the tool rotational speed and the feed rate appreciably affect the extent of AGG. The higher the rotation speed the lower the AGG at low-to-intermediate feed rates.",

keywords = "Abnormal grain growth, Friction stir welding, Post-weld heat treatment, Room temperature tensile properties",

author = "Attallah, {Moataz M.} and Salem, {Hanadi G.}",

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journal = "Materials Science and Engineering A",

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TY - JOUR

T1 - Friction stir welding parameters

T2 - A tool for controlling abnormal grain growth during subsequent heat treatment

AU - Attallah, Moataz M.

AU - Salem, Hanadi G.

PY - 2005/1/25

Y1 - 2005/1/25

N2 - Recent investigations showed that the fine weld nugget grain structure of friction stir welds (FSW) undergoes abnormal grain growth (AGG) in the post-weld solution heat-treated condition. This significantly deteriorates the strength of FSW of high-strength heat-treatable Al-alloys. In the current research, various welds of AA2095 sheets were prepared by manipulating the FSW parameters, and subsequently heat-treated to investigate the influence of the process parameters (feed rate and tool rotation speed) on the extent of AGG. Characterization of the microstructure and tensile properties revealed that the tool rotational speed and the feed rate appreciably affect the extent of AGG. The higher the rotation speed the lower the AGG at low-to-intermediate feed rates.

AB - Recent investigations showed that the fine weld nugget grain structure of friction stir welds (FSW) undergoes abnormal grain growth (AGG) in the post-weld solution heat-treated condition. This significantly deteriorates the strength of FSW of high-strength heat-treatable Al-alloys. In the current research, various welds of AA2095 sheets were prepared by manipulating the FSW parameters, and subsequently heat-treated to investigate the influence of the process parameters (feed rate and tool rotation speed) on the extent of AGG. Characterization of the microstructure and tensile properties revealed that the tool rotational speed and the feed rate appreciably affect the extent of AGG. The higher the rotation speed the lower the AGG at low-to-intermediate feed rates.

KW - Abnormal grain growth

KW - Friction stir welding

KW - Post-weld heat treatment

KW - Room temperature tensile properties

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EP - 59

JO - Materials Science and Engineering A

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IS - 1-2

ER -

Friction stir welding parameters: A tool for controlling abnormal grain growth during subsequent heat treatment

Abstract

Keywords

ASJC Scopus subject areas

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