Comparison of microstructural stability of IN939 superalloy with two different manufacturing routes during long-time aging

被引：35
作者：
Jahangiri, M. R. [1 ]
Arabi, H. [2 ]
Boutorabi, S. M. A. [2 ]
机构：
[1] Niroo Res Inst, Dept Met, Tehran 14686, Iran
[2] Iran Univ Sci & Technol, Sch Met & Mat Engn, Tehran 1684613114, Iran
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2014年 / 24卷 / 06期
关键词：
nickel-based superalloy; IN939; superalloy; long-term coarsening; manufacturing route; heat treatment; gamma particles; carbides; NICKEL-BASE SUPERALLOY; NI-BASED SUPERALLOY; COARSENING KINETICS; GAMMA'-PARTICLES; AL ALLOYS; BEHAVIOR; PRECIPITATION; CAST; DEFORMATION; EVOLUTION;
D O I：
10.1016/S1003-6326(14)63245-3
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Microstructural stability of IN939 superalloy with two different manufacturing routes was investigated during long-term aging at elevated temperatures by light optical microscope (OM) and scanning electron microscope (SEM) equipped with an EDS system. The results show that the coarsening behavior of gamma particles is primarily impacted by the initial heat treatment conditions, and the effect of the prior manufacturing route (casting or hot forming) is found to be insignificant, if any, on the gamma particles coarsening kinetics. In the temperature range of 790-827 degrees C, IN939 cast/wrought-HT2 alloys have more microstructural stability, while in the temperature range of 827-910 degrees C, the initial heat treatment marked as HT1 provides more stable microstructure for the cast or wrought IN939 superalloy.
引用
收藏
页码：1717 / 1729
页数：13
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