Creep Properties of Aircraft Gas Turbine Materials in relation to Heat Treatment

J. Ocean Eng. Technol. 1999;13(4):112-117.

Kong, Yu-Sik;Oh, Sae-Kyoo;Park, No-Kwang;

항공기용 가스터빈 재료의 열처리에 따른 크리프 특성

공유식;오세규;박노광;

부경대학교 대학원 학연기계공학과;부경대학교 기계.자동차 공학부;한국기계연구원;

Keywords: Creep Properties, Creep Life Prediction, Creep Stress, Rupture Time, Initial Strain, LMP(Larson-Miller Parameter)

핵심용어: 크리프특성, 크리프 수명 예측, 크리프응력, 파단시간, 초기연신률

Abstract

In this paper, the creep properties and creep life prediction by Larson-Miller Parameter method for Udimet 720 to be used for aircraft gas turbine engines or other high temperature components were presented at the elevated temperatures of 538, 649 and $704^{circ}C$. It was confirmed experimentally and quantitatively that a creep life predictive equation at such various high temperatures was well derived by LMP.