第3〜第5世代Ni基単結晶超合金の高温弾性定数の特性比較(ガスタービン技術の最先端 : 材料・システム,ガスタービン技術の最先端)

概要

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National Institute for Materials Science has been developed several Ni-based single crystal superalloys for a gas turbine aiming at improvement in thermal efficiency .This project attained the heat resistance of 1100℃ which was a target at last recently. In this investigation, high temperature Young's modulus of each generation's alloy developed until now was measured by the ultrasonic method and resonance method. Thus, it was clarified high temperature Young's modulus measurement of an ultrasonic method has large variation compared with the resonance method. The variation in a measurement result is a gap of the crystal angle of a specimen. When [011] direction of a crystal shifted 23degree, it turns out that a Elastic modulus value changes about 9 %.
社団法人日本機械学会の論文
2004-09-04