IMR OpenIR
Microstructure evolution of single crystal superalloy DD5 joints brazed using AWS BNi-2 filler alloy
Y.; Liu Sun, J.; Li, B.; Li, H.; Jin, T.
2014
Source PublicationMaterials Research Innovations
ISSN1432-8917
Volume18Pages:341-346
AbstractNickel based single crystal superalloy DD5 was brazed with the AWS classification filler metal BNi- 2 at brazing temperature of 1323-1423 K for holding 10-240 min. The effect of the brazing temperature and brazing time on the microstructure of the brazed joint was investigated by scanning electron microscope (SEM) and electron probe microanalyser (EPMA). The result indicates that the joints exhibit sound bonding without any defect and crack. Three distinct regions can be identified in the joint: a diffusion affect zone composed of gamma-gamma' phase and fine M3B2 precipitates, an interfacial bonding zone solidified isothermally at the brazing temperature, and braze alloy zone formed by the solidification of surplus molten filler alloy during cooling. The braze alloy zone consists of gamma+gamma' eutectic phase, chromium boride, and ternary eutectic phase of gamma-nickel, nickel boride and nickel silicide. With extending brazing time, the thickness of interfacial bonding zone and diffusion affect zone increased while brittle compounds reduced. The bonding mechanism was discussed with reference to the microstructure evolution of the joint.
description.department[sun, y. ; liu, j. ; li, b. ; li, h. ; jin, t.] chinese acad sci, imr, dept superalloys, beijing, peoples r china. ; sun, y (reprint author), chinese acad sci, imr, dept superalloys, cas, beijing, peoples r china. ; yuansun@imr.ac.cn
KeywordSingle Crystal Superalloy Brazing Bni-2 Filler Alloy Microstructure Mechanism Base Temperature Silicon
URL查看原文
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73928
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Y.,Liu Sun, J.,Li, B.,et al. Microstructure evolution of single crystal superalloy DD5 joints brazed using AWS BNi-2 filler alloy[J]. Materials Research Innovations,2014,18:341-346.
APA Y.,Liu Sun, J.,Li, B.,Li, H.,&Jin, T..(2014).Microstructure evolution of single crystal superalloy DD5 joints brazed using AWS BNi-2 filler alloy.Materials Research Innovations,18,341-346.
MLA Y.,et al."Microstructure evolution of single crystal superalloy DD5 joints brazed using AWS BNi-2 filler alloy".Materials Research Innovations 18(2014):341-346.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Y.]'s Articles
[Liu Sun, J.]'s Articles
[Li, B.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Y.]'s Articles
[Liu Sun, J.]'s Articles
[Li, B.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Y.]'s Articles
[Liu Sun, J.]'s Articles
[Li, B.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.