Wide-gap brazing of IN738 and the bonding strength using Ni-based filler metal powders

被引：2
|
作者：
Kim, Y. H. [1 ]
Kim, I. H. [2 ]
Kim, K. T. [1 ]
Shin, S. Y. [1 ]
机构：
[1] Korea Inst Ind Technol, Adv Funct Mat Team, 7-47 Songdo, Inchon 406800, South Korea
[2] Korea Inst Ind Technol, Adv Mat Div, Inchon 406-800, South Korea
来源：
MECHANICAL BEHAVIOR OF MATERIALS X, PTS 1AND 2 | 2007年 / 345-346卷
关键词：
wide-gap brazing; IN738; superalloy; additive powder; bonding strength; eutectic;
D O I：
10.4028/www.scientific.net/KEM.345-346.1449
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and bonding strength of the wide-gap region brazed with different filler metal powder (BNi-3 and DF 4B) and various powder mixing ratios of additive powder to filler metal powder were investigated. The microstructure characterization showed that Cr borides with a blocky morphology were existed in the brazed region in both filler metal powder, The bonding strength of the wide-gap region brazed with 60 wt.% IN738 additive and 40 wt.% DF 413 powder exhibited 92% tensile strength of IN738 superalloy at room temperature. The Cracks in the wide-gap brazed region initiated at the intermetallic compound and eutectic structure, and then propagated through them.
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页码：1449 / +
页数：2
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