Topic
Peening
About: Peening is a research topic. Over the lifetime, 5538 publications have been published within this topic receiving 73073 citations.
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TL;DR: In this paper, the authors investigated residual stresses and microstructure on surface layer of (TiB+TiC)/Ti-6Al-4V composite after stress peening.
33 citations
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TL;DR: In this paper, a strengthening and machining integrated ultrasonic peening drilling (UPD) was proposed to solve the problem by introducing ultrasonic vibration perpendicular to the hole surface during drilling.
33 citations
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TL;DR: In this article, the results showed that the compressive residual stress and microstructure of S30432 austenitic stainless steel were improved significantly after shot peening with different prestress states.
33 citations
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TL;DR: In this paper, a modified LSP process is proposed to generate strong dislocation activity in silicon crystal by modifying the laser shock peening process and it is found that dislocation density, dislocation multiplication rate, and dislocation microstructure strongly depend on LSP processing conditions.
33 citations
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TL;DR: In this article, a contact model that accounts for interfacial cohesion and thermal conduction is developed to investigate the influence of bonding on the final residual stresses build-up in cold spray.
Abstract: A contact model that accounts for interfacial cohesion and thermal conduction is developed to investigate the influence of bonding on the final residual stresses build-up in cold spray. The residual stress evolution in the cold-sprayed Al-6061 coating on an Al-6061 substrate is investigated via three-dimensional single-particle and multi-particle impact simulations. It is shown that the interface bonding mainly affects the local residual stress distribution near the interfaces. The residual stresses are largely due to the kinetic peening and bonding effects. The thermal cooling has negligible influence. In general, this work finds that peening introduces compressive stress, while bonding causes relaxation. The balance between the peening and the bonding effects, which depends strongly on the local bonding environment, determines the final residual stress in the system. This work suggests that the interface bonding should be considered as one of the essential factors in numerical modeling of the residual stresses evolution in cold spray.
33 citations