Low Cycle Fatigue Life Evaluation According to Temperature and Orientation in Nickel-Base Superalloy-Reference-Cited by-同舟云学术

Low Cycle Fatigue Life Evaluation According to Temperature and Orientation in Nickel-Base Superalloy

Published:2019-07 Issue: Volume:814 Page:121-126
ISSN:1662-9795
Container-title:Key Engineering Materials
language:
Short-container-title:KEM

Author:

Heo In Kang¹,Yoon Dong Hyun¹,Kim Jae Hoon¹

Affiliation:

1. Chungnam National University

Abstract

Components of gas turbines must be extremely resistant to high temperatures, high stresses, high-temperature corrosion, and erosive environments. The materials used in these environmental conditions are mainly nickel-based superalloys. In this study, the low-cycle fatigue of the nickel-based superalloy Inconel 792 was examined. The total strain range of a gas turbine between 760 °C and 870 °C was considered as the parameter representing the actual gas turbine operation. In addition, tests were performed using a trapezoidal waveform of the total strain to reflect the operation-stop conditions of a gas turbine with frequent shutdowns. The results of the fatigue test were compared with the Coffin–Manson method and energy method. The fractured surface was analyzed using a scanning electron microscope (SEM).

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://www.scientific.net/KEM.814.121.pdf

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