Microstructure Evolution During Al, Ti, and Mo Surface Deposition and Volume Diffusion in Ni-20Cr Wires and Woven Structures

被引：5

作者：

Wang, Cong ^{[1
]}

Dunand, David C. ^{[1
]}

机构：

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

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2015年 / 46A卷 / 05期

关键词：

MORPHOLOGICAL INSTABILITY; MECHANICAL-PROPERTIES; PACK-ALUMINIZATION; GAMMA-PRIME; NICKEL; NI; TEMPERATURE; MOLYBDENUM; GROWTH; PHASE;

D O I：

10.1007/s11661-015-2794-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ni-20 wt pct Cr wires, as individual wires or within 3D woven structures, are alloyed with Mo, Al, and Ti by gas-phase surface deposition and volume interdiffusion. Mo deposition creates Mo-rich coating and Kirkendall pores. Al + Ti co-deposition creates uniform triple-layered coating. The resulting homogenized and aged Ni-(17.4-19.6) Cr-(1.6-1.8) Al-(2.5-3.6) Ti-(1.5-4.5) Mo(wt pct) wires exhibit gamma + gamma' superalloy microstructure. This demonstrates the feasibility of fabricating 3D woven Ni-base structures via gas-phase alloying and heat treatments, into multi-element superalloys with solid-state bonding at wire contacts. (C) The Minerals, Metals & Materials Society and ASM International 2015

引用

页码：2249 / 2254

页数：6

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