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Paper Information

Title: 

EFFECT OF HEAT TREATMENT OF COATING ON NI-BASE SUPERALLOY GTD-111

Type: PAPER
Author(s): DELFAN M.,ARABI H.
 
 
 
Name of Seminar: INTERNATIONAL POWER SYSTEM CONFRENCE
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVANIR
Date:  2004Volume 19
 
 
Abstract: 

THE NI-BASE SUPER ALLOY GTD-111 IS WIDELY USED IN MANUFACTURING OF THE FIRST STAGE BLADES OF HIGH POWER LAND-BASED GAS TURBINES. IN SPITE OF ITS IMPORTANT ROLE IN INCREASING THE PERFORMANCE OF GAS TURBINES, DUE TO HIGH TEMPERATURE CAPABILITY, THERE ARE LITTLE DATA ON THE MICROSTRUCTURE, DEFORMATION MECHANISMS AND MECHANICAL PROPERTIES OF THE ALLOY.
THE MICROSTRUCTURE OF THESE BLADES ARE USUALLY OPTIMIZED DURING A SPECIFIC HEAT TREATMENT CYCLE AND THEN COATING IS APPLIED IN ORDER TO INCREASE THEIR HOT CORROSION AND OXIDATION RESISTANCE. HOWEVER, SINCE THE COATING IS APPLIED AT HIGH TEMPERATURE AND THEREFORE THE COATING HEAT CYCLE MAY AFFECT THE ALREADY OPTIMIZED MICROSTRUCTURE. THE AIM OF PRESENT PAPER IS TO INVESTIGATE THE EFFECTS OF THE ORDER APPLICATION OF HEAT TREATMENT CYCLES.

 
Keyword(s): SUPERALLOY GTD-111, HEAT TREATMENT, COATING
 
 
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