Diffusion Bonding of TiAl to Ti6Al4V Using Nanolayers

被引：8

作者：

Simoes, Sonia ^{[1
,2
]}

Viana, Filomena ^{[1
,2
]}

Ramos, A. Sofia ^{[3
]}

Vieira, M. Teresa ^{[3
]}

Vieira, Manuel F. ^{[1
,2
]}

机构：

[1] Univ Porto, Dept Met & Mat Engn, CEMMPRE, R Dr Roberto Frias, P-4200465 Porto, Portugal

[2] INEGI Inst Sci & Innovat Mech & Ind Engn, R Dr Roberto Frias, P-4200465 Porto, Portugal

[3] Univ Coimbra, Dept Mech Engn, CEMMPRE, R Luis Reis Santos, P-3030788 Coimbra, Portugal

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2018年 / 27卷 / 10期

关键词：

electronmicroscopy; intermetallic; joining; nanomaterials; titanium; MECHANICAL-PROPERTIES; MICROSTRUCTURE; ALLOYS; TI-6AL-4V;

D O I：

10.1007/s11665-018-3207-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructural characterization of TiAl to Ti6Al4V dissimilar diffusion bonds assisted by reactive Ni/Al nanolayers was performed in this study. The nanolayers (alternated Al and Ni) were deposited onto the base material surfaces. Diffusion bonding was performed at 700 and 800 degrees C under pressures from 5 to 40MPa and dwell times between 60 and 180min. Microstructural characterization was performed using high-resolution transmission and scanning electron microscopies. The observations revealed that dissimilar TiAl to Ti6Al4V joints assisted by Ni/Al reactive nanolayers can be obtained successfully at 800 degrees C during 60min using a pressure of 20MPa. The bond interface is thin (less than 10 mu m) and is mainly composed of NiAl grains. Thin layers of Al-Ni-Ti intermetallic compounds were formed adjacent to the base materials.

引用

页码：5064 / 5068

页数：5

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