Effects of Ruthenium on Microstructure and Stress Rupture Properties of a Nickel-base Single Crystal Superalloy

被引：3
|
作者：
Yang, Shuai [1 ]
Zhang, Jian [2 ]
Luo, Yushi [2 ]
Zhao, Yunsong [3 ]
Tang, Dingzhong [2 ]
Cao, Guoqiang [1 ]
机构：
[1] Shenyang Aerosp Univ, Coll Mech & Elect Engn, Shenyang 110136, Peoples R China
[2] Beijing Inst Aeronaut Mat, Natl Key Lab Adv High Temp Struct Mat, Beijing 100095, Peoples R China
[3] Beijing Univ Sci & Technol, State Key Lab Adv Met &Mat, Beijing 100083, Peoples R China
来源：
HIGH PERFORMANCE STRUCTURE MATERIALS | 2013年 / 747-748卷
关键词：
Ru; Microstructure; TCP phase; Property; PHASE-STABILITY; RU; CREEP;
D O I：
10.4028/www.scientific.net/MSF.747-748.777
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Ru addition(0 wt.%, 3 wt.%, 5 wt.%), on gamma' morphology, elemental segregation, microstructural stability under long-term thermal exposure at 980 degrees C and stress rupture properties at 1100 degrees C/130MPa have been studied. The results showed that with the increase of Ru content, the gamma/gamma' eutectic volume fraction and the dendrite arm spacing decreased gradually. The gamma' phase mean size in three alloys decreased with the increase of the Ru content. On the other hand, the dendrite segregation of Al, Ta towards interdendrite area and Re, W towards dendrite core area was alleviated gradually with the increase of the Ru content. The increase of Ru content from 0 wt.% to 5 wt.% pronouncedly enhanced the stress rupture properties by suppressing the precipitation of TCP phases effectively at high temperature.
引用
收藏
页码：777 / +
页数：3
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