Effect of shot peening forming and shot peening strengthening post-treatment on the fatigue behavior of bolt-connected 2024HDT alloy

Junnan Wu,Daoxin Liu,Yanying Guan,Hailan Shi, Shumin Cheng,Jianmeng Shi, Xueting He, Xiaoqiang Fu

Engineering Fracture Mechanics（2023）

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摘要

•The fretting fatigue resistance of 2024HDT alloy connector is improved by 9.05% after SPF.•The plain fatigue resistance of SPF samples is further enhanced after SPS post-treatment.•The failure mode changes from fretting to plain fatigue after SPF and SPF + SPS.•SPF + SPS2 produces the highest fatigue resistance due to lightest surface damage.

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关键词

2024HDT aluminum alloy,Shot peening strengthening,Shot peening forming,Surface integrity,Fatigue resistance

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