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NIMONIC 263 MICROSTRUCTURE AND SURFACE CHARACTERIZATION AFTER LASER SHOCK PEENING

机译:激光震击后的NIMONIC 263显微组织和表面特征

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摘要

The Laser Shock Peening (LSP) is applied to the surface of Nimonic 263 alloy. The changes in microstructure and surface topography are observed and analyzed by Scanning Electron Microscopy (SEM), profilometer and microhardness tester. Various laser regimes are chosen which provoke effects of both mechanical and thermo-mechanical treatments of the sample surface. The optimal process parameters, that result in the finest microstructure, smooth and clean surface, are determined. Some wanted and unwanted phases leading to the crack formation are observed.
机译:激光冲击喷丸(LSP)应用于Nimonic 263合金的表面。通过扫描电子显微镜(SEM),轮廓仪和显微硬度测试仪观察并分析微观结构和表面形貌的变化。选择各种激光方案,它们会激发样品表面的机械和热机械处理效果。确定最佳的工艺参数,以产生最佳的微观结构,光滑和清洁的表面。观察到一些导致裂纹形成的有用相和有害相。

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