Micro-hardness and residual stress relaxation of 2024 T351 aluminum alloy

Omar Suliman Zaroog, Aidy Ali, B. B. Sahari, Rizal Zahari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The residual stress relaxation can be divided into two stages: The first cycle relaxation and the following cycles. In both stages, residual stress relaxed considerably from the initial state. The aim of this study is to investigate the residual stress relaxation and microhardness reduction after first and second cyclic load. A 2024 T351 aluminum alloy specimens were shot peened into three shot peening intensities. The fatigue test for first and second cyclic loads of two loads 15.5 kN and 30 kN was performed. The initial residual stress and residual stress after the first and second cycle stress was measured for the three shot peening intensities using X-ray diffraction. Microhardness test was performed for each specimen. The results showed that the residual stress relaxation for first cycle was reached more than 40% of the initial residual stress and it depends on the load amplitude, and microhardness decreased for the first cycle reached 22% and also it depended on load amplitude.

Original languageEnglish
Title of host publicationFracture and Strength of Solids VII
Pages343-348
Number of pages6
DOIs
Publication statusPublished - 04 Feb 2011
Event8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010 - Kuala Lumpur, Malaysia
Duration: 07 Jun 201009 Jun 2010

Publication series

NameKey Engineering Materials
Volume462-463
ISSN (Print)1013-9826

Other

Other8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010
CountryMalaysia
CityKuala Lumpur
Period07/06/1009/06/10

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Zaroog, O. S., Ali, A., Sahari, B. B., & Zahari, R. (2011). Micro-hardness and residual stress relaxation of 2024 T351 aluminum alloy. In Fracture and Strength of Solids VII (pp. 343-348). (Key Engineering Materials; Vol. 462-463). https://doi.org/10.4028/www.scientific.net/KEM.462-463.343