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Residual stress relaxation of deep-rolled Al–Mg–Si–Cu alloy during cyclic loading at elevated temperatures

Authors
Journal
Scripta Materialia
1359-6462
Publisher
Elsevier
Publication Date
Volume
55
Issue
12
Identifiers
DOI: 10.1016/j.scriptamat.2006.08.047
Keywords
  • Residual Stress Relaxation
  • High-Temperature Fatigue
  • Deep-Rolling
  • Al–Mg–Si–Cu Aluminium Alloy

Abstract

Near-surface macroscopic compressive residual stresses in a deep-rolled aluminium alloy AA6110-T6 (Al–Mg–Si–Cu) were measured during cyclic loading at elevated temperatures as a function of loading cycle. Thermal residual stress relaxation was investigated and analyzed by applying the Zener–Wert–Avrami function. The effects of stress amplitude as well as temperature on residual stress relaxation during stress-controlled cyclic loading at elevated temperatures were systematically investigated and analyzed using separate assessment of mechanical and thermal residual stress relaxation.

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