@inproceedings{459fb94e1ee242169ababeb56979a5e6,
title = "Effect of Nb on Pore Structure and Permeability of Ti-48Al Cellular Alloy",
abstract = "TiAl based alloys have been investigated traditionally as potential high temperature structural materials. Another interesting field where TiAl based cellularalloys were fabricated by elemental powder metallurgy (EPM) is shown in this study. The effects of Nb addition forms (Nb elemental powder and Nb-Al alloying powder) and contents on pore structures and tensile properties of Ti-48A1 cellular alloy were investigated. It was found that the phases identified are y-TiAl and a2-Ti3A1 when Nb content is less than 2\%, and pore structures of Ti-48A1-2Nb alloy are similar to those of Ti-48A1 cellular alloy for both Nb addition forms. When Nb content is beyond 2\%, an additional A1Nb2 phase is observed, and pore structures also change. Lots of particles form on the surface of the skeleton for adopting Nb elemental powder, and micropores appear along with big pores for adopting Nb-Al alloying powder. With the increase of Nb content, permeability increases gradually for adopting Nb elemental powder. However, the contrary phenomenon happens for adopting Nb-Al alloying powder.",
keywords = "Permeability, Powder metallurgy, Reactive pore, Structure, TiAl based alloy",
author = "Yang Wang and Junpin Lin and Yuehui He and Gang Sun and Yanli Wang and Guoliang Chen",
note = "Publisher Copyright: {\textcopyright} Ti-2007 - Proceedings of the 11th World Conference on Titanium. All Rights Reserved.; 11th World Conference on Titanium, Ti-2007 ; Conference date: 03-06-2007 Through 07-06-2007",
year = "2007",
language = "英语",
series = "Ti-2007 - Proceedings of the 11th World Conference on Titanium",
publisher = "Japan Institute of Metals (JIM)",
pages = "1153--1156",
editor = "M. Niinomi and S. Akiyama and M. Ikeda and M. Hagiwara and K. Maruyama",
booktitle = "Ti-2007 - Proceedings of the 11th World Conference on Titanium",
address = "日本",
}