Preparation and properties of porous Ti–Al alloys by reactive infiltration

Zhang, W; Liu, Y; Wang, H; Wei, Quiping

doi:10.1179/003258909x12502679013855

Cited by 9 publications

(2 citation statements)

References 11 publications

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“…TiAl intermetallic compound porous materials are attracting more and more attention due to an increasing targeted demand. [1][2][3][4][5][6][7][8][9][10] The materials can be expected to use as membrane separation materials, catalyst carriers, thermal insulation materials, lightweight structural materials, etc. due to their outstanding intrinsic features, such as high specific strength and specific stiffness, good corrosion and wear resistance, high temperature resistance and oxidation resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of pore structure on mechanical properties of porous TiAl

Hao

Wang

et al. 2016

Materials Science and Technology

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Based on two sets of TiAl powder, two kinds of porous TiAl were separately fabricated by powder metallurgical route including four stages. The porous TiAl with single pore structure (SPS) was prepared using pre-alloyed TiAl powder prior mechanical ball milling. Another porous TiAl with composite pore structure (CPS) was manufactured depending on composite mixture of Ti/Al elemental powders. The sintering was achieved at much lower temperature for the pre-alloyed power than for the elemental composite mixture. Compressive mechanical tests indicate that much higher mechanical strength can be obtained for SPS than for CPS at the same porosity. It was suggested that the difference of mechanical properties is ascribed to the variety of the compressive deformation process.

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Section: Introductionmentioning

confidence: 99%

Effect of pore structure on mechanical properties of porous TiAl

Hao

Wang

et al. 2016

Materials Science and Technology

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“…3 calculated completely internal oxidation theory oxygen source Cu 2 O content is 2.97vol%. But oxygen source content when the choice, should consider the following reasons[8]: (1) Cu-Al alloy powder containing phosphorus impurity element, in order of size, P, Al, As, Fe, Ni, Mg, Sn, Si and Zn, and metallic elements such As copper, if the formation of solid solution will greatly reduce the conductivity of copper alloy. As far As possible to the impurity element oxidation; (2) The oxygen supply Cu 2 O high temperature decomposition can't completely adsorbed on the surface of Cu-Al alloy powder and complete diffusion; Therefore, this test oxygen source content elected 5vol% to ensure that the internal oxidation sufficiently.…”

mentioning

confidence: 99%

Hot Compression Performance of TiC10/Cu-Al<sub>2</sub>O<sub>3</sub> Composite Prepared by Vacuum Hot-Pressed Sintering

Yang

Liu

Tian

et al. 2013

AMR

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Use VDBF-250 vacuum hot pressing sintering furnace TiC10/Cu-Al2O3composite was prepared by vacuum-pressed sintering. In the cold isotatic pressing machine for sintering state sample was cold isostatic pressing and detection performance. Using the Gleeble-1500D simulator, the high-temperature plastic deformation behavior of TiC10/Cu-Al2O3composite was investigated at 450850°C with the strain rate of 0.0011s1and total strain of 0.7 the dynamic recrystallization behavior of the composite was studied. The results show that the density, microhardness and electrical conductivity of the composite are 98.53%, 161HV and 48.7%IACS. After the isostatic cool pressing, The comprehensive performance of the material were improved. The softening mechanism of the dynamic recrystallization is a feature of high-temperature flow stressstrain curves of the composites, and the peak stress increases with the decrease of deformation temperature or the increase of strain rate, and Belong to temperature and strain rate sensitive material.

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