Properties, Weldability, and Applications of Modern Wrought Heat-Resistant Alloys for Aerospace and Power Generation Industries

2004 ◽  
Vol 128 (2) ◽  
pp. 354-361 ◽  
Author(s):  
M. D. Rowe ◽  
V. R. Ishwar ◽  
D. L. Klarstrom
Keyword(s):  
Power Generation ◽  
Thermal Stability ◽  
Gas Turbine ◽  
Test Methods ◽  
Limiting Factor ◽  
High Temperature Strength ◽  
Critical Properties ◽  
Heat Resistant ◽  
Selection For ◽  
Alloy Properties

Alloy selection and alloy design both require consideration of an array of material attributes, including in-service properties, weldability, and fabricability. Critical properties of modern heat-resistant alloys for gas turbine applications include high-temperature strength, thermal stability, oxidation resistance, and fatigue resistance. In this paper, the properties of 12 solid-solution-strengthened and six age-hardenable heat-resistant alloys are compared. Weldability is an important attribute and can be a major limiting factor in the use of certain alloys. Weldability test methods are discussed, and the resistance of alloys to solidification cracking and strain-age cracking is compared. The use of weldability testing in the development of modern heat-resistant alloys is discussed with several examples cited. Finally, alloy selection for gas turbine components is outlined, taking into account both alloy properties and fabricability.

Properties, Weldability, and Applications of Modern, Wrought, Heat-Resistant Alloys for Aerospace and Power Generation Industries

2004 ◽  
Author(s):  
M. D. Rowe ◽  
V. R. Ishwar ◽  
D. L. Klarstrom
Keyword(s):  
Power Generation ◽  
Thermal Stability ◽  
Gas Turbine ◽  
Test Methods ◽  
Limiting Factor ◽  
High Temperature Strength ◽  
Critical Properties ◽  
Heat Resistant ◽  
Selection For ◽  
Alloy Properties

Alloy selection and alloy design both require consideration of an array of material attributes, including in-service properties, weldability, and fabricability. Critical properties of modern heat-resistant alloys for gas turbine applications include high temperature strength, thermal stability, oxidation resistance, and fatigue resistance. In this paper, the properties of twelve solid-solution-strengthened and six age-hardenable heat-resistant alloys are compared. Weldability is an important attribute, and can be a major limiting factor in the use of certain alloys. Weldability test methods are discussed and the resistance of alloys to solidification cracking and strain-age cracking is compared. The use of weldability testing in the development of modern heat-resistant alloys is discussed with several examples cited. Finally, alloy selection for gas turbine components is outlined, taking into account both alloy properties and fabricability.

scholarly journals Combined heat/cooling and power generation using hybrid micro gas turbine in a CST plant for a residential off-grid application

2020 ◽  
Author(s):  
Francesco Rovense ◽  
Miguel Ángel Reyes-Belmonte ◽  
Manuel Romero ◽  
José González-Aguilar
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Micro Gas Turbine ◽  
Grid Application

Modularized, Combined LM2500 PE and Plus Package for Power Generation and Mechanical Drive

1997 ◽  
Author(s):  
Knuth Jahr
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Design Concept ◽  
Auxiliary System ◽  
System Concept

This paper presents the Kværner design concept for an LM2500 Gas Turbine Package, with combined engine interfaces for both the LM2500 PE and the LM2500 Plus. The paper also presents the Kværner Modularized Auxiliary System concept, where the lube oil module and the fuel modules are located in separate compartments integrated in the turbine skid, protected from soak-back heat and blade-out conditions.

Thermal stability of some heat-resistant elastomers

1989 ◽  
Vol 21 (3) ◽  
pp. 199-204 ◽  
Author(s):  
G. J. Knight ◽  
W. W. Wright
Keyword(s):  
Thermal Stability ◽  
Heat Resistant ◽  
Thermal Stability Of

Predicting Flameholding for Hydrogen and Natural Gas Flames at Gas Turbine Premixer Conditions

2016 ◽  
Vol 138 (12) ◽  
Author(s):  
Elliot Sullivan-Lewis ◽  
Vincent McDonell
Keyword(s):  
Power Generation ◽  
Natural Gas ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Experimental Studies ◽  
Temperature Variations ◽  
Auto Ignition ◽  
Chamber Temperature ◽  
Transient Events ◽  
Significant Effort

Lean-premixed gas turbines are now common devices for low emissions stationary power generation. By creating a homogeneous mixture of fuel and air upstream of the combustion chamber, temperature variations are reduced within the combustor, which reduces emissions of nitrogen oxides. However, by premixing fuel and air, a potentially flammable mixture is established in a part of the engine not designed to contain a flame. If the flame propagates upstream from the combustor (flashback), significant engine damage can result. While significant effort has been put into developing flashback resistant combustors, these combustors are only capable of preventing flashback during steady operation of the engine. Transient events (e.g., auto-ignition within the premixer and pressure spikes during ignition) can trigger flashback that cannot be prevented with even the best combustor design. In these cases, preventing engine damage requires designing premixers that will not allow a flame to be sustained. Experimental studies were conducted to determine under what conditions premixed flames of hydrogen and natural gas can be anchored in a simulated gas turbine premixer. Tests have been conducted at pressures up to 9 atm, temperatures up to 750 K, and freestream velocities between 20 and 100 m/s. Flames were anchored in the wakes of features typical of premixer passageways, including cylinders, steps, and airfoils. The results of this study have been used to develop an engineering tool that predicts under what conditions a flame will anchor, and can be used for development of flame anchoring resistant gas turbine premixers.

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