Investigation of the Use of Laser Shock Peening for Enhancing Fatigue and Stress Corrosion Cracking Resistance of Nuclear Energy Materials | Zendy

Vijay K. Vasudevan | Zendy; John H. Jackson | Zendy; S. Teysseyre | Zendy; B. Alexandreanu | Zendy; Yiren Chen | Zendy

Open Access

Investigation of the Use of Laser Shock Peening for Enhancing Fatigue and Stress Corrosion Cracking Resistance of Nuclear Energy Materials

Author(s) -

Vijay K. Vasudevan,

John H. Jackson,

S. Teysseyre,

B. Alexandreanu,

Yiren Chen

Publication year - 2017

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/1347705

Subject(s) - materials science , residual stress , peening , metallurgy , microstructure , shot peening , stress corrosion cracking , grain boundary , shock (circulatory) , alloy , deformation (meteorology) , composite material , medicine

In this study, the effects of laser shock peening (LSP) on stress corrosion cracking (SCC) behavior of nickel based Alloy 600 in tetrathionate solution were investigated. The LSP induced compressive residual stresses and changes in the near surface microstructure, hardness were characterized. The effects of LSP on SCC susceptibility of Alloy 600 in tetrathionate solution were evaluated by slow strain rate tests and constant load tests. The results indicate a significantly longer time to failure and decreased susceptibility to SCC. These improvements were attributed to LSP induced compressive residual stresses, increased yield strength and hardening caused by near-surface microstructural changes.

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