LENS fabrication of Nb-Si (Ti,Cr) alloys

Ryan Dehoff; Peter M. Sarosi; Peter C. Collins; Hamish M. Fraser; Michael J. Mills

LENS fabrication of Nb-Si (Ti,Cr) alloys

Ryan Dehoff, Peter M. Sarosi, Peter C. Collins, Hamish M. Fraser, Michael J. Mills

Manufacturing Science Division

Research output: Contribution to specialist publication › Article

Abstract

The Nb-Si binary alloy system is under investigation as a potential high temperature structural material. The Nb-Si system forms an "in-situ" metal-intermetallic microstructure consisting of Nb₃Si and Nb₅Si₃ intermetallic phases in a body-centered cubic matrix phase of niobium. Alloying additions of titanium, chromium, and hafnium have been shown to improve oxidation behavior and metal loss rate at elevated temperatures. The LENS technique has several advantages, such as the ability to form near net shaped components as well as the ability to grade compositions. The resulting microstructures will be discussed using SEM and TEM techniques.

Original language	English
Pages	49
Number of pages	1
Volume	163
No	8
Specialist publication	Advanced Materials and Processes
State	Published - Aug 2005

Cite this

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AB - The Nb-Si binary alloy system is under investigation as a potential high temperature structural material. The Nb-Si system forms an "in-situ" metal-intermetallic microstructure consisting of Nb3Si and Nb5Si3 intermetallic phases in a body-centered cubic matrix phase of niobium. Alloying additions of titanium, chromium, and hafnium have been shown to improve oxidation behavior and metal loss rate at elevated temperatures. The LENS technique has several advantages, such as the ability to form near net shaped components as well as the ability to grade compositions. The resulting microstructures will be discussed using SEM and TEM techniques.

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JO - Advanced Materials and Processes

JF - Advanced Materials and Processes

ER -

LENS fabrication of Nb-Si (Ti,Cr) alloys

Abstract

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