Effects of Thermal exposure on Microstructure and Mechanical Properties of Ni based Superalloy GTD111

被引：3
作者：
Lee, Han-sang [1 ]
Yoo, Keun-bong [1 ]
Kim, Doo-soo [1 ]
Kim, Jae-hoon [2 ]
机构：
[1] KEPCO Res Inst, Power Generat Lab, 65 Munji Ro, Taejon 305760, South Korea
[2] Chungnam Natl Univ, Dept Engn Mech, Yuseong Gu, Taejon 305764, South Korea
来源：
STRUCTURAL INTEGRITY AND FAILURE | 2011年 / 275卷
关键词：
gas turbine; thermal exposure; stress-rupture test; mechanical property; GTD111;
D O I：
10.4028/www.scientific.net/AMR.275.31
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The rotating components in the hot sections of land-based gas turbine are exposed to severe environment during several ten thousand hours at above 1100 degrees C operating temperature. The failure mechanism of the hot gas components would be accompanied by material degradation in the properties of high temperature and creep rupture strength. Many hot gas components in gas turbine are made of Ni-based superalloy because of their high temperature performance. In this work, we surveyed the time and temperature dependent degradation of Ni-based superalloy. We prepared the specimens from GTD111 that are exposed at 871 degrees C and 982 degrees C in 1,000 similar to 10,000 hours. We carried out the mechanical test and microstructural observation.
引用
收藏
页码：31 / +
页数：2
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