热暴露对带热障涂层DD6单晶高温合金组织的影响

采用0.3 MPa压力对DD6单晶高温合金进行水吹砂,然后用电子束物理气相沉积的方法在DD6合金基体上制备了热障涂层,将带热障涂层试样置于1100℃空气气氛中分别进行50 h和100 h热暴露,在1100℃/130 MPa条件下测试持久性能。研究了水吹砂及高温热暴露对带热障涂层DD6合金组织的影响。结果表明：0.3 MPa压力水吹砂制备热障涂层并高温热暴露后没有发现再结晶组织;热暴露过程中,基体和涂层之间的元素会发生不同程度的互扩散;表面残余应力和元素互扩散导致了γ＇相粗化方向的变化;性能测试后试样断口附近的涂层与基体界面下方局部区域形成了二次反应区。...

Full description

Saved in:
Bibliographic Details
Published in航空材料学报 Vol. 36; no. 5; pp. 38 - 43
Main Author 董建民 李嘉荣 牟仁德 田贺
Format Journal Article
LanguageChinese
Published 北京航空材料研究院 先进高温结构材料重点实验室,北京,100095%北京航空材料研究院 航空材料先进腐蚀与防护航空科技重点实验室,北京,100095 2016
Subjects
DD6
热暴露
热障涂层
组织
热障涂层
DD6
structures
组织
thermal exposure
thermal barrier coatings
热暴露
Online AccessGet full text
ISSN1005-5053
DOI10.11868/j.issn.1005-5053.2016.5.007

Cover

More Information
Summary:采用0.3 MPa压力对DD6单晶高温合金进行水吹砂,然后用电子束物理气相沉积的方法在DD6合金基体上制备了热障涂层,将带热障涂层试样置于1100℃空气气氛中分别进行50 h和100 h热暴露,在1100℃/130 MPa条件下测试持久性能。研究了水吹砂及高温热暴露对带热障涂层DD6合金组织的影响。结果表明：0.3 MPa压力水吹砂制备热障涂层并高温热暴露后没有发现再结晶组织;热暴露过程中,基体和涂层之间的元素会发生不同程度的互扩散;表面残余应力和元素互扩散导致了γ＇相粗化方向的变化;性能测试后试样断口附近的涂层与基体界面下方局部区域形成了二次反应区。
Bibliography:thermal barrier coatings ; thermal exposure ; DD6 ; structures
11-3159/V
DONG Jianmin1 , LI Jiarong1 , MU Rende2, TIAN He2（1. Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials ,Beijing 100095 , China; 2. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Materials, Beijing Institute of Aeronautical Materials, Beijing 100095 , China）
In order to investigate the effect of water grit-blasting and high temperature thermal exposure on the microstructures of DD6 alloy with TBCs, DD6 single crystal superalloy specimens were water grit-blasted with 0. 3 MPa pressure, then the specimens were coated with thermal barrier coatings by electron beam physical vapor deposition （ EB-PVD） . Specimens with TBCs were exposed at 1100 ℃ for 50 and 100 hours in the air respectively, and then these specimens were subjected to stress-rupture tests under the condition of 1100℃ /130 MPa. The results show that gri
ISSN:1005-5053
DOI:10.11868/j.issn.1005-5053.2016.5.007