Microstructure of Thin-Gauge Austenitic and Ferritic Stainless Steel Joints Brazed using Metglas® Amorphous Foil

Image Processing-Based Analysis of Temperature Dependent Interlayer in Brazed Fe-Cr-Al Alloy (Fecralloy®) with Ni-Based Filler Metal

“…The formation of Cr x B y phase at the interface of chromium and boron has been confirmed by researchers [17][18][19]25]. The formation of Cr x B y is one of important factors in that Cr x B y is brittle and affects the bond strength [18,19].…”

“…In other words, the components of chromium and boron were diffused better at 1000 °C to the opposite metals. NixAly is the important phase in terms of bonding between Fecralloy and MBF20 in that NixAly is able to provide long term high temperature material strength [17]. Aluminum is included in Fecralloy at a rate of (5% wt) and nickel is contained only in MBF20 (82.24 wt.…”

“…The increase in the number of newly formed phase pixels can be deduced that the junction was improving as the junction temperature increased even though the correlation might not be linear. Ni x Al y is the important phase in terms of bonding between Fecralloy and MBF20 in that Ni x Al y is able to provide long term high temperature material strength [17]. Aluminum is included in Fecralloy at a rate of (5% wt) and nickel is contained only in MBF20 (82.24 wt.…”

“…In addition, by using brazing bonding, the bonding between metal and non-metal, less thermal distortion, and cost-effective complex bonding are possible [14]. There have been various research on brazing bonding for metal and metal [15][16][17][18][19]. Metal and non-metal brazing was also performed that Al 2 O 3 and 304 stainless steel brazed using 97(Ag28Cu)3Ti filler [20,21], Fecralloy/copper foil/silicon nitride brazing bonding [22], and boron nitride with steel bonding [23] were performed.…”

Induction Brazing of 304 Stainless Steel with a Metalloid-Free Ni-Zr-Ti-Al-Sn Amorphous Foil

“…[1][2][3][4][5][6][7][8] . These ller metals can be applied in forms of powders, powder-based pastes, rolled plates or tapes, or Metglas ® amorphous brazing foils (designated as MBF) [8][9][10][11][12][13][14] . The amorphous brazing foils made by rapid solidi cation have been used predominantly due to many advantages such as the amorphous structure with uniform composition and homogeneous phase state, a narrow temperature interval of melting point, a short brazing time and high atom diffusion rate 9,15,16) , thus homogeneous brazing joints can be obtained.…”