Infrared Brazed Joints of Ti50Ni50 Shape Memory Alloy and Ti-15-3 Alloy Using Two Ag-Based Fillers

被引：4

作者：

Lin, Chieh ^{[1
]}

Shiue, Ren-Kae ^{[1
]}

Wu, Shyi-Kaan ^{[1
,2
]}

Yang, Tsung-En ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Dept Mech Engn, Taipei 106, Taiwan

来源：

MATERIALS | 2019年 / 12卷 / 10期

关键词：

Ti50Ni50 shape memory alloy; Ti-15-3; alloy; brazing; interfacial reaction; joint strength; NITI SHAPE; STAINLESS-STEEL; BRAZING CU; TI; SURFACE; TI-6AL-4V;

D O I：

10.3390/ma12101603

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The wettability, microstructures, and bonding strength of infrared brazing Ti-15-3 and Ti50Ni50 shape memory alloy using 72Ag-28Cu (wt.%) and 68.8Ag-26.7Cu-4.5Ti (wt.%) filler metals have been investigated. Only Ticusil((R)) active braze readily wets both Ti50Ni50 and Ti-15-3 substrates. Wetting of eutectic 72Ag-28Cu melt on Ti50Ni50 base metal is greatly ameliorated by adding 4.5 wt.% Ti into the alloy. The brazed Ti-15-3/BAg-8/Ti50Ni50 joint consists of Cu-Ti intermetallics in the Ag-rich matrix. The formation of interfacial Cu(Ti,V) and (CuxNi1-x)(2)Ti intermetallics next to Ti-15-3 and Ti50Ni50 substrates, respectively, is attributed to the wetting of both substrates. The brazed Ti-15-3/Ticusil((R))/Ti50Ni50 joint shows a vigorous reaction, which results in the formation of a large amount of Ti2Ni intermetallics in the joint. The maximum joint strengths using BAg-8 and Ticusil((R)) filler metals are 197 MPa and 230 MPa, respectively.

引用

页数：11

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