Allister James – November 19, 2015 Materials for Harsh Service Conditions: The Industrial Gas Turbine Perspective
Turbine Inlet Temperature oC System Considerations for Industrial Gas Turbines Business drivers/ Customer requirements 1956 1966 1976 1986 1996 2006 2016 800 1200 D F G Commercial Operation Turbine Inlet Temperature oC 1800 1000 1400 1600 Natural Gas Engines IGCC Engines Cost First cost Life cycle cost Performance Plant power Plant efficiency Capabilities Emissions Operational flexibility Regulatory compliance Upgradeability Reliability, availability Time-to-market
The Potential & Challenges of New Materials Specific strength 500 1000 1500 2000 Temperature Source: Plansee
Materials Systems: Thermal and Environmental Protection TGas TSubstrate TSurface Thermal Insulation (lower thermal conductivity) TBC TCooling air Bond Coat TBond Coat Base Material TBC adhesion, Environmental resistance
Component Considerations Cost Material cost Processing cost Yield rates Availability of revert Time Availability – Material Availability – data Processing time Design rules & guidelines Performance Strength Fatigue resistance Creep resistance Toughness Temperature capability Environmental Compatibility (coating) Interfaces (CTE, Wear) Superalloys: The utility gas turbine perspective International Symposium on Superalloys 2000
Concurrent Engineering Materials Systems approach Property balance Availability Property data Design Structural Aero Heat transfer Design guidelines Service Field feedback Repair / replace Design for Service Manufacturing Primary processing Secondary processing Inspection
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