The effect of heat treatment on the properties of friction stir processed AA7075-O with and without nano alumina additions

M. Refat; A. M.M. Abdelmotagaly; M. M.Z. Ahmed; I. El-Mahallawi

doi:10.1007/978-3-319-48173-9_13

The effect of heat treatment on the properties of friction stir processed AA7075-O with and without nano alumina additions

M. Refat, A. M.M. Abdelmotagaly, M. M.Z. Ahmed, I. El-Mahallawi

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

8 Scopus citations

Abstract

In this study, four passes friction stir processing (FSP) were applied on AA7075-O with and without the incorporation of alumina nano-particles (Al₂O₃) of average size 40nm. FSP parameters were constant at 500rpm and 40mm/min speed with tilt angle of 3⁰. FSP rotation direction applied on clockwise and then counters clockwise direction every two passes. The friction stir processed (FSPed) materials were section and solution treated at 515°C for 1.5hrs that followed by age hardening at 120°C for 12, 24 and 36hrs. The effect of heat treatment regimes on the microstructure and hardness were examined. The microstructure and hardness after HT were compared with that of as FSPed material in each case. It has been found that in case of as FSPed material without any HT the effect of nano-alumina particles is significant in hardness increase relative to the one without powder. However, applying heat treatment regime has resulted in a slighter difference in the hardness between the two cases with and without nano particles additions.

Original language	English
Title of host publication	Friction Stir Welding and Processing VIII
Publisher	Springer International Publishing
Pages	115-123
Number of pages	9
ISBN (Electronic)	9783319481739
ISBN (Print)	9781119082491
DOIs	https://doi.org/10.1007/978-3-319-48173-9_13
State	Published - 1 Jan 2016
Externally published	Yes

Keywords

AA7075
Aluminum-nano composites
Friction stir processing
Hardness
Heat treatment
Microstructure
Nano-alumina

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10.1007/978-3-319-48173-9_13

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title = "The effect of heat treatment on the properties of friction stir processed AA7075-O with and without nano alumina additions",

abstract = "In this study, four passes friction stir processing (FSP) were applied on AA7075-O with and without the incorporation of alumina nano-particles (Al2O3) of average size 40nm. FSP parameters were constant at 500rpm and 40mm/min speed with tilt angle of 30. FSP rotation direction applied on clockwise and then counters clockwise direction every two passes. The friction stir processed (FSPed) materials were section and solution treated at 515°C for 1.5hrs that followed by age hardening at 120°C for 12, 24 and 36hrs. The effect of heat treatment regimes on the microstructure and hardness were examined. The microstructure and hardness after HT were compared with that of as FSPed material in each case. It has been found that in case of as FSPed material without any HT the effect of nano-alumina particles is significant in hardness increase relative to the one without powder. However, applying heat treatment regime has resulted in a slighter difference in the hardness between the two cases with and without nano particles additions.",

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author = "M. Refat and Abdelmotagaly, \{A. M.M.\} and Ahmed, \{M. M.Z.\} and I. El-Mahallawi",

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AU - Refat, M.

AU - Abdelmotagaly, A. M.M.

AU - Ahmed, M. M.Z.

AU - El-Mahallawi, I.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - In this study, four passes friction stir processing (FSP) were applied on AA7075-O with and without the incorporation of alumina nano-particles (Al2O3) of average size 40nm. FSP parameters were constant at 500rpm and 40mm/min speed with tilt angle of 30. FSP rotation direction applied on clockwise and then counters clockwise direction every two passes. The friction stir processed (FSPed) materials were section and solution treated at 515°C for 1.5hrs that followed by age hardening at 120°C for 12, 24 and 36hrs. The effect of heat treatment regimes on the microstructure and hardness were examined. The microstructure and hardness after HT were compared with that of as FSPed material in each case. It has been found that in case of as FSPed material without any HT the effect of nano-alumina particles is significant in hardness increase relative to the one without powder. However, applying heat treatment regime has resulted in a slighter difference in the hardness between the two cases with and without nano particles additions.

AB - In this study, four passes friction stir processing (FSP) were applied on AA7075-O with and without the incorporation of alumina nano-particles (Al2O3) of average size 40nm. FSP parameters were constant at 500rpm and 40mm/min speed with tilt angle of 30. FSP rotation direction applied on clockwise and then counters clockwise direction every two passes. The friction stir processed (FSPed) materials were section and solution treated at 515°C for 1.5hrs that followed by age hardening at 120°C for 12, 24 and 36hrs. The effect of heat treatment regimes on the microstructure and hardness were examined. The microstructure and hardness after HT were compared with that of as FSPed material in each case. It has been found that in case of as FSPed material without any HT the effect of nano-alumina particles is significant in hardness increase relative to the one without powder. However, applying heat treatment regime has resulted in a slighter difference in the hardness between the two cases with and without nano particles additions.

KW - AA7075

KW - Aluminum-nano composites

KW - Friction stir processing

KW - Hardness

KW - Heat treatment

KW - Microstructure

KW - Nano-alumina

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BT - Friction Stir Welding and Processing VIII

PB - Springer International Publishing

ER -

The effect of heat treatment on the properties of friction stir processed AA7075-O with and without nano alumina additions

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Keywords

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