Forming AI-AI2O3 nanocomposite surfaces using friction stir processing

Jun Qu; Hanbing Xu; Zhili Feng; Ke An; Rick Battiste; Linan An; Helge Heinrich

Forming AI-AI₂O₃ nanocomposite surfaces using friction stir processing

Jun Qu, Hanbing Xu, Zhili Feng, Ke An, Rick Battiste, Linan An, Helge Heinrich

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

7 Scopus citations

Abstract

This study presents a solid-state process based nanocomposite surface engineering approach. Friction stir processing was used to stir and mix nano-sized Al₂O₃ particles into a pure aluminum surface to form a high-particle-concentration (up to 20 vol%) AI-AI₂O ₃ nanocomposite layer of up to several millimeters thick. Compared with an unprocessed aluminum surface, the nanocomposite surface demonstrated increased hardness (by 3x) and yield strength (by 10x), and reduced friction coefficient (by 55%) and wear rate (by 100x). A high matrix dislocation density revealed by transmission electron microscopy is believed to be largely responsible for such significant improvements. Neutron diffraction measurements indicated tensile residual stress in the aluminum matrix that was mainly induced by the thermal-expansion mismatch between aluminum and alumina.

Original language	English
Title of host publication	Transactions of the North American Manufacturing Research Institution of SME - 37th Annual North American Manufacturing Research Conference, NAMRC 37
Pages	349-356
Number of pages	8
State	Published - 2009
Event	37th Annual North American Manufacturing Research Conference, NAMRC 37 - Greenville, SC, United States Duration: May 19 2009 → May 22 2009

Publication series

Name	Transactions of the North American Manufacturing Research Institution of SME
Volume	37
ISSN (Print)	1047-3025

Conference

Conference	37th Annual North American Manufacturing Research Conference, NAMRC 37
Country/Territory	United States
City	Greenville, SC
Period	05/19/09 → 05/22/09

Keywords

Aluminum
Friction stir processing
Nanocomposite
Surface engineering
Wear resistance

Cite this

Qu, J., Xu, H., Feng, Z., An, K., Battiste, R., An, L., & Heinrich, H. (2009). Forming AI-AI₂O₃ nanocomposite surfaces using friction stir processing. In Transactions of the North American Manufacturing Research Institution of SME - 37th Annual North American Manufacturing Research Conference, NAMRC 37 (pp. 349-356). (Transactions of the North American Manufacturing Research Institution of SME; Vol. 37).

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title = "Forming AI-AI2O3 nanocomposite surfaces using friction stir processing",

abstract = "This study presents a solid-state process based nanocomposite surface engineering approach. Friction stir processing was used to stir and mix nano-sized Al2O3 particles into a pure aluminum surface to form a high-particle-concentration (up to 20 vol%) AI-AI2O 3 nanocomposite layer of up to several millimeters thick. Compared with an unprocessed aluminum surface, the nanocomposite surface demonstrated increased hardness (by 3x) and yield strength (by 10x), and reduced friction coefficient (by 55%) and wear rate (by 100x). A high matrix dislocation density revealed by transmission electron microscopy is believed to be largely responsible for such significant improvements. Neutron diffraction measurements indicated tensile residual stress in the aluminum matrix that was mainly induced by the thermal-expansion mismatch between aluminum and alumina.",

keywords = "Aluminum, Friction stir processing, Nanocomposite, Surface engineering, Wear resistance",

author = "Jun Qu and Hanbing Xu and Zhili Feng and Ke An and Rick Battiste and Linan An and Helge Heinrich",

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series = "Transactions of the North American Manufacturing Research Institution of SME",

pages = "349--356",

booktitle = "Transactions of the North American Manufacturing Research Institution of SME - 37th Annual North American Manufacturing Research Conference, NAMRC 37",

note = "37th Annual North American Manufacturing Research Conference, NAMRC 37 ; Conference date: 19-05-2009 Through 22-05-2009",

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Qu, J, Xu, H, Feng, Z , An, K, Battiste, R, An, L & Heinrich, H 2009, Forming AI-AI₂O₃ nanocomposite surfaces using friction stir processing. in Transactions of the North American Manufacturing Research Institution of SME - 37th Annual North American Manufacturing Research Conference, NAMRC 37. Transactions of the North American Manufacturing Research Institution of SME, vol. 37, pp. 349-356, 37th Annual North American Manufacturing Research Conference, NAMRC 37, Greenville, SC, United States, 05/19/09.

Forming AI-AI₂O₃ nanocomposite surfaces using friction stir processing. / Qu, Jun; Xu, Hanbing; Feng, Zhili et al.
Transactions of the North American Manufacturing Research Institution of SME - 37th Annual North American Manufacturing Research Conference, NAMRC 37. 2009. p. 349-356 (Transactions of the North American Manufacturing Research Institution of SME; Vol. 37).

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

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T1 - Forming AI-AI2O3 nanocomposite surfaces using friction stir processing

AU - Qu, Jun

AU - Xu, Hanbing

AU - Feng, Zhili

AU - An, Ke

AU - Battiste, Rick

AU - An, Linan

AU - Heinrich, Helge

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N2 - This study presents a solid-state process based nanocomposite surface engineering approach. Friction stir processing was used to stir and mix nano-sized Al2O3 particles into a pure aluminum surface to form a high-particle-concentration (up to 20 vol%) AI-AI2O 3 nanocomposite layer of up to several millimeters thick. Compared with an unprocessed aluminum surface, the nanocomposite surface demonstrated increased hardness (by 3x) and yield strength (by 10x), and reduced friction coefficient (by 55%) and wear rate (by 100x). A high matrix dislocation density revealed by transmission electron microscopy is believed to be largely responsible for such significant improvements. Neutron diffraction measurements indicated tensile residual stress in the aluminum matrix that was mainly induced by the thermal-expansion mismatch between aluminum and alumina.

AB - This study presents a solid-state process based nanocomposite surface engineering approach. Friction stir processing was used to stir and mix nano-sized Al2O3 particles into a pure aluminum surface to form a high-particle-concentration (up to 20 vol%) AI-AI2O 3 nanocomposite layer of up to several millimeters thick. Compared with an unprocessed aluminum surface, the nanocomposite surface demonstrated increased hardness (by 3x) and yield strength (by 10x), and reduced friction coefficient (by 55%) and wear rate (by 100x). A high matrix dislocation density revealed by transmission electron microscopy is believed to be largely responsible for such significant improvements. Neutron diffraction measurements indicated tensile residual stress in the aluminum matrix that was mainly induced by the thermal-expansion mismatch between aluminum and alumina.

KW - Aluminum

KW - Friction stir processing

KW - Nanocomposite

KW - Surface engineering

KW - Wear resistance

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Qu J, Xu H, Feng Z , An K, Battiste R, An L et al. Forming AI-AI₂O₃ nanocomposite surfaces using friction stir processing. In Transactions of the North American Manufacturing Research Institution of SME - 37th Annual North American Manufacturing Research Conference, NAMRC 37. 2009. p. 349-356. (Transactions of the North American Manufacturing Research Institution of SME).