Fabrication of Porous Reticulated TiAl Intermetallics and Its Reinforcement Properties

Geng Haoran1; Hui Linhai2; Wang Shouren3; Xu Fusong1

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Fabrication of Porous Reticulated TiAl Intermetallics and Its Reinforcement Properties
Vol. 29, Issue 3, Pages: 213-216(2009)
Published： 2009 ，
DOI：

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[1]耿浩然,惠林海,王守仁,徐福松.TiAl金属间化合物网络结构件的制备[J].特种铸造及有色合金,2009,29(03):213-216+190.

Geng Haoran1, Hui Linhai2, Wang Shouren3, et al. Fabrication of Porous Reticulated TiAl Intermetallics and Its Reinforcement Properties. [J]. Special Casting & Nonferrous Alloys 29(3):213-216(2009)
[1]耿浩然,惠林海,王守仁,徐福松.TiAl金属间化合物网络结构件的制备[J].特种铸造及有色合金,2009,29(03):213-216+190. DOI：

Geng Haoran1, Hui Linhai2, Wang Shouren3, et al. Fabrication of Porous Reticulated TiAl Intermetallics and Its Reinforcement Properties. [J]. Special Casting & Nonferrous Alloys 29(3):213-216(2009) DOI：

摘要

选用具有连通气孔的多孔有机物作为骨架

利用浸渗工艺

将多孔骨架浸入一定配比的TiAl浆料中

制备出具有一定孔隙率及高通孔率的TiAl坯体

经低温和高温两个阶段烧结获得性能良好的多孔网状骨架。当烧结温度在1380℃时

网状金属间化合物具有最佳的烧结效果

既能保持很高的通孔率

又保证了材料具有较高的抗压强度。研究了以TiAl网状结构为增强体的Al基复合材料的摩擦磨损行为和压缩性能。结果表明

TiAl网状结构增强效果明显

复合材料的抗磨损性能和抗压缩性能明显优于基体铝

其磨损行为主要为粘着磨损。

Abstract

A porous reticulated TiAl intermetallics framework with excellent properties was prepared by sintering at low temperature and then high temperature

in which porous TiAl billet with high interconnected pore rate was formed by infiltrating a reticulated polymeric sponge with interconnected pores being used as primal framework into proportioned TiAl slurry.The reticulated TiAl intermetallics framework with desirable high interconnected pore rate and high compressive strength can be prepared by sintering at 1380℃.Compressibility and wear-friction behavior of porous reticulated TiAl intermetallics reinforced Al matrix composites were investigated.The results reveal that wear resistance and compressibility of the composites are obviously superior to those of Al matrix due to reinforcing effects of porous reticulated TiAl intermetallics.The wear mechanism of the composites is characterized by adhesive wear.