Degradation Characteristics of Inconel738LC with Thermal Exposure

Keun Bong Yoo; Han Sang Lee; Kyu So Song

doi:10.4028/www.scientific.net/AMR.275.117

Paper Titles

Aircraft Joints: the Interaction between Corrosion Protection and Structural Performance
p.101

Residual Strength Optimisation of a Vent Hole in an Aircraft Component Using a Heuristic Method
p.105

Influence of Heat Treatment on Fatigue Strength of Drawn Steel Tubes for Small-Sized Single Pass Boiler
p.109

The Microstructure and Mechanical Properties of Ni-Based Superalloy after Service Exposure in Gas Turbine
p.113

Degradation Characteristics of Inconel738LC with Thermal Exposure
p.117

Effects of High Temperature Deformation and Thermal Exposure on Microstructure and Mechanical Properties of Co-Based Superalloy
p.121

Optimum Design for Life Extension on the End Coupling of Aluminum Hot Rolling Process
p.125

Integrity Evaluation and Dynamic Behavior of Radioactive Material Transport Cask under Drop Impact
p.129

Ab Initio Phonon Dispersion Curves Used to Check Experimentally Determined Elastic Constants of the MAX Phase Ti₃SiC₂
p.135

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 275Degradation Characteristics of Inconel738LC with...

Degradation Characteristics of Inconel738LC with Thermal Exposure

Abstract:

Gas turbine components operated by hot combustion gas undergo material degradation due to the thermal cycle by daily startup and shutdown. The failure mechanism of the hot gas components is accompanied by degradation in the properties of high temperature strength and creep rupture time. Many hot gas components in gas turbines are made of Ni-based superalloy because of their high temperature performance. In this work, we survey the time and temperature dependent degradation of Ni-based superalloy. We prepared specimens from Inconel738LC that were then exposed at 871~982°C in 1,000~5,000hours. We carried out stress-rupture tests and microstructural investigation.