A204 再生処理したガスタービン動翼の実機使用による劣化(材料強度評価-1,OS-6 保全・設備診断技術(3),一般講演,地球温暖化防止と動力エネルギー技術)

概要

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We have conducted research for the recovery of material properties on gas turbine blades, and confirmed the refurbish treatment that hot isostatic pressing technique applied could recover metallurgical and mechanical properties of the degraded blades. After the treatment was applied to the degraded blades, those blades were reinstalled in a commercial gas turbine. After 4 years operation, various non-destructive and destructive tests were conducted to serviced blades. It was showed that no cracks or deformation in any of blades, with very little change in microstructure and mechanical properties. No acceleration in degradation rate was revealed, and we confirmed that the refurbish treatment could be a useful service-life extension method for gas turbine blades.
社団法人日本機械学会の論文
2008-06-18