Microstructural Evolution of Infrared Brazed CP-Ti Using Ti-Cu-Ni Brazes

被引：15

作者：

Chang, C. T. ^{[2
]}

Yeh, T. Y. ^{[1
]}

Shiue, R. K. ^{[1
]}

Chang, C. S. ^{[3
]}

机构：

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

[2] Natl Hualien Ind Vocat Senior High Sch, Dept Mech Engn, Hualien 970, Taiwan

[3] Engineered Mat Solut, Attleboro, MA 02703 USA

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2011年 / 27卷 / 02期

关键词：

Infrared Brazing; CP-Ti; Ti-Cu-Ni fillers; Microstructure;

D O I：

10.1016/S1005-0302(11)60038-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructural evolution of infrared vacuum brazed CP-Ti using two Ti-based braze alloys, Ti-15Cu-15Ni and Ti-15Cu-25Ni, has been investigated. The infrared brazed joint consisted of eutectic Ti2Cu/Ti2Ni intermetallic compounds and Ti-rich matrix. The eutectic Ti2Cu/Ti2Ni intermetallic compounds disappeared from the joint after being annealed at 900 degrees C for 1 h. In contrast, the depletion rate of both Cu and Ni from the braze alloy into CP-Ti substrate at 750 degrees C annealing was greatly decreased as compared with that annealed at 900 degrees C. Blocky Ti2Cu/Ti2Ni phases were observed even if the specimen was annealed at 750 degrees C for 15 h. Because the Ni content of the Ti-15Cu-25Ni braze alloy is much higher than that of the Ti-15Cu-15Ni alloy, the amount of eutectic Ti2Cu/Ti2Ni phases in Ti-15Cu-25Ni brazed joint is more than that in Ti-15Ci-15Ni brazed joint. However, similar microstructural evolution can be obtained from the infrared brazed joint annealed at various temperatures and/or time for both filler metals.

引用

页码：131 / 138

页数：8

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