Retrogression, reaging and residual stresses in 7010 forgings

J. S. Robinson; D. A. Tanner; S. D. Whelan

doi:10.1046/j.1460-2695.1999.00137.x

Retrogression, reaging and residual stresses in 7010 forgings

J. S. Robinson, D. A. Tanner, S. D. Whelan

School of Engineering

Aluminium Corporation

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

Abstract

Open die forgings of the aluminum alloy 7010 (DTD5636) have been retrogressed at temperatures between 200 and 240 °C and then reaged (RRA). Tensile, fracture toughness and stress corrosion cracking values are reported. Retrogression at 200 °C offers the most promising combination of properties, and the long retrogression time of approx. 2500 s will enable thick sections to be treated. Residual stresses induced during quenching are also predicted, and initial experimental results suggest that some stress relief occurs during the retrogression heat treatment.

Original language	English
Pages (from-to)	51-58
Number of pages	8
Journal	Fatigue and Fracture of Engineering Materials and Structures
Volume	22
Issue number	1
DOIs	https://doi.org/10.1046/j.1460-2695.1999.00137.x
Publication status	Published - Jan 1999

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abstract = "Open die forgings of the aluminum alloy 7010 (DTD5636) have been retrogressed at temperatures between 200 and 240 °C and then reaged (RRA). Tensile, fracture toughness and stress corrosion cracking values are reported. Retrogression at 200 °C offers the most promising combination of properties, and the long retrogression time of approx. 2500 s will enable thick sections to be treated. Residual stresses induced during quenching are also predicted, and initial experimental results suggest that some stress relief occurs during the retrogression heat treatment.",

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AB - Open die forgings of the aluminum alloy 7010 (DTD5636) have been retrogressed at temperatures between 200 and 240 °C and then reaged (RRA). Tensile, fracture toughness and stress corrosion cracking values are reported. Retrogression at 200 °C offers the most promising combination of properties, and the long retrogression time of approx. 2500 s will enable thick sections to be treated. Residual stresses induced during quenching are also predicted, and initial experimental results suggest that some stress relief occurs during the retrogression heat treatment.

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Retrogression, reaging and residual stresses in 7010 forgings

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