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ASM Handbook

Aluminum Science and Technology

Edited by
Kevin Anderson, FASM
Kevin Anderson, FASM
Mercury Marine
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;
John Weritz
John Weritz
Aluminum Association
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;
J. Gilbert Kaufman, FASM
J. Gilbert Kaufman, FASM
Kaufman Associates
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ASM International
Volume
2A
ISBN electronic:
978-1-62708-207-5
Publication date:
2018
Book Chapter

Quenching of Aluminum Alloys[1]

By
D. Scott MacKenzie
D. Scott MacKenzie
Hoyghton International
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Published:
2018
Page range:
438 - 461
Publication history
November 22, 2018

Abstract

The fundamental objective of quenching is to preserve, as nearly as possible, a metastable solid solution formed at the solution heat treating temperature, by rapidly cooling to some lower temperature, usually near room temperature. This article provides an overview of the factors used to determine a suitable cooling rate and the appropriate quenching process to develop a suitable cooling rate. It discusses the three distinct stages of quenching: vapor stage, boiling stage, and convection stage. The article reviews the factors that affect the rate of cooling in production operations. It discusses the quenchants that are used in quenching aluminum alloys, namely, hot or cold water and polyalkylene glycol. The article also describes the racking practices for controlling distortion and the level of residual stresses induced during the quench.

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D. Scott MacKenzie, 2018. "Quenching of Aluminum Alloys", Aluminum Science and Technology, Kevin Anderson, FASM, John Weritz, J. Gilbert Kaufman, FASM

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