Transient liquid-phase bonded 3D woven Ni-based superalloys

SCRIPTA MATERIALIA

卷:108

Article

Erdeniz, Dinc¹  Sharp, Keith W.²  Dunand, David C.¹ 

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] SAERTEX USA LLC, Huntersville, NC 28078 USA

关键词: Nickel alloys;    Pack cementation;    Liquid-phase sintering;    Microstructure;    Mechanical properties;   

DOI  :  10.1016/j.scriptamat.2015.06.016

来源: Elsevier

【 摘 要 】

Architectured Ni-based superalloy scaffolds were fabricated by three-dimensional weaving of ductile Ni-20Cr (wt.%) wires followed by gas-phase alloying with aluminum and titanium via pack cementation. Bonding of neighboring wires occurs at necks that are formed by solid-state diffusion or by formation of a transient-liquid phase. Three-point bending tests of the superalloy weaves, after homogenization and aging to achieve a gamma/gamma' structure, show that, as bonding between wires increases, the materials withstand higher stresses and strains before onset of damage. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free