• effects of striated laser tracks on thermal fatigue resistance of cast iron samples with biomimetic non-smooth surface

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 408
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in order to enhance the thermal fatigue resistance of cast iron materials, the samples with biomimetic non-smooth surface were processed by neodymium:yttrium aluminum garnet (nd:yag) laser. with self-controlled thermal fatigue test method, the thermal fatigue resistance of smooth and non-smooth samples was investigated. the effects of striated laser tracks on thermal fatigue resistance were also studied. the results indicated that biomimetic non-smooth surface was benefit for improving thermal fatigue resistance of cast iron sample. the striated non-smooth units formed by laser tracks which were vertical with thermal cracks had the best propagation resistance. the mechanisms behind these influences were discussed, and some schematic drawings were introduced to describe them.

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