Effect of Thermal Annealing on Machining-Induced Residual Stresses in Inconel 718

Madariaga, A.; Aperribay, J.; Arrazola, P.J.; Esnaola, J.A.; Hormaetxe, E.; Garay, A.; Ostolaza, K.

doi:10.1007/s11665-017-2824-2

Cited by 10 publications

(2 citation statements)

References 23 publications

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“…Juijerm and Altenberger [29] demonstrated the relaxation behavior of residual stress by the Zener-Wert-Avrami formula. The Zener-Wert-Avrami model is widely used to describe the residual-stress relaxation behavior of aluminum alloys [30,31] and other alloys [32,33] accurately in the heat treatment process.…”

Section: Introductionmentioning

confidence: 99%

Residual-stress relaxation mechanism and model description of 5052H32 Al alloy spun ellipsoidal heads during annealing treatment

et al. 2021

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Marginal-restraint mandrel-free spinning is an advanced technology for manufacturing ellipsoidal heads with large diameter-thickness ratios. Nevertheless, the spinning-induced residual stress, which greatly influences the in-service performance of spun heads, should be removed. In this study, the effects of annealing on the residual-stress relaxation behavior of 5052H32 aluminum alloy spun heads were investigated. It is found that the residual stress first rapidly decreases and then remains steady with the increase in annealing time at the tested annealing temperatures. The relaxation of the residual stress becomes increasingly obvious with the increase in annealing temperature. When the annealing temperature is less than 220 °C, there are no obvious changes in grain size. Moreover, the spinning-induced dislocations are consumed by the static recovery behavior, which decreases the residual stress during annealing. When the annealing temperature is approximately 300 °C, the broken grains transform into equiaxed grains. In addition, static recrystallization and recovery behaviors occur simultaneously to promote the relaxation of the residual stress. Considering the different stress relaxation mechanisms, a model based on the Zener-Wert-Avrami equation was established to predict the residual-stress relaxation behavior. Finally, the optimized annealing temperature and time were approximately 300 °C and 30 min, respectively.

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Section: Introductionmentioning

confidence: 99%

Residual-stress relaxation mechanism and model description of 5052H32 Al alloy spun ellipsoidal heads during annealing treatment

et al. 2021

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“…The selection of temperatures was based on the application temperature of typical nickel based superalloy [120] and expected recovery temperature suggested by Khadhraoui et al [99] at 393°C. Madariaga [121] in his thermal annealing study also observed minimal stress relaxation at 400°C. Therefore, the temperatures of 250°C, 400°C and 600°C were chosen for this experimentation.…”

Section: Sample Preparationmentioning

confidence: 87%

Effect of residual stress and cold work on fatigue of inconel 718

Chin¹

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A Novel Stress Relaxation Modeling for Predicting the Change of Residual Stress During Annealing Heat Treatment

Bai

Feng

et al. 2019

Metall Mater Trans A

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Effect of Thermal Annealing on Machining-Induced Residual Stresses in Inconel 718

Cited by 10 publications

References 23 publications

Residual-stress relaxation mechanism and model description of 5052H32 Al alloy spun ellipsoidal heads during annealing treatment

Residual-stress relaxation mechanism and model description of 5052H32 Al alloy spun ellipsoidal heads during annealing treatment

Effect of residual stress and cold work on fatigue of inconel 718

A Novel Stress Relaxation Modeling for Predicting the Change of Residual Stress During Annealing Heat Treatment

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