Comparison of the properties of TiC/Fe-Al composites produced by self-propagating high-temperature synthesis and hot isostatic pressing

Jari Keskinen, Jukka Maunu, Pekka Lintula, M. Heinonen, Pekka Ruuskanen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Self-propagating high-temperature synthesis (SHS) and hot isostatic pressing (HIP) techniques were used to produce TiC-20 wt.% Fe-Al and TiC-40 wt.% Fe-Al composite materials. The microstructure of the materials produced by the SHS technique consisted of spherical carbide particles embedded in an iron aluminide matrix whereas the microstructure of the materials produced by the HIP technique was less regular. A maximum hardness of 1820 HV was measured for the material produced using HIP and a maximum fracture toughness of 16.3 MPa 1/2 was obtained for the material produced by SHS. Hardness values obtained from samples produced by the HIP technique were higher than those obtained from samples produced by the SHS technique. The SHS samples had better fracture toughness. The results of the oxidation resistance tests showed that TiC/Fe-Al composite materials can be recommended for use in oxidative environments holding temperatures up to 800°C.
Original languageEnglish
Pages (from-to)797-807
Number of pages11
JournalMaterials and Manufacturing Processes
Volume14
Issue number6
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

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Hot isostatic pressing
Composite materials
Fracture toughness
Temperature
Hardness
Microstructure
Oxidation resistance
Carbides
Iron

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Keskinen, Jari ; Maunu, Jukka ; Lintula, Pekka ; Heinonen, M. ; Ruuskanen, Pekka. / Comparison of the properties of TiC/Fe-Al composites produced by self-propagating high-temperature synthesis and hot isostatic pressing. In: Materials and Manufacturing Processes. 1999 ; Vol. 14, No. 6. pp. 797-807.
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abstract = "Self-propagating high-temperature synthesis (SHS) and hot isostatic pressing (HIP) techniques were used to produce TiC-20 wt.{\%} Fe-Al and TiC-40 wt.{\%} Fe-Al composite materials. The microstructure of the materials produced by the SHS technique consisted of spherical carbide particles embedded in an iron aluminide matrix whereas the microstructure of the materials produced by the HIP technique was less regular. A maximum hardness of 1820 HV was measured for the material produced using HIP and a maximum fracture toughness of 16.3 MPa 1/2 was obtained for the material produced by SHS. Hardness values obtained from samples produced by the HIP technique were higher than those obtained from samples produced by the SHS technique. The SHS samples had better fracture toughness. The results of the oxidation resistance tests showed that TiC/Fe-Al composite materials can be recommended for use in oxidative environments holding temperatures up to 800°C.",
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Comparison of the properties of TiC/Fe-Al composites produced by self-propagating high-temperature synthesis and hot isostatic pressing. / Keskinen, Jari; Maunu, Jukka; Lintula, Pekka; Heinonen, M.; Ruuskanen, Pekka.

In: Materials and Manufacturing Processes, Vol. 14, No. 6, 1999, p. 797-807.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Keskinen, Jari

AU - Maunu, Jukka

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AU - Heinonen, M.

AU - Ruuskanen, Pekka

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AB - Self-propagating high-temperature synthesis (SHS) and hot isostatic pressing (HIP) techniques were used to produce TiC-20 wt.% Fe-Al and TiC-40 wt.% Fe-Al composite materials. The microstructure of the materials produced by the SHS technique consisted of spherical carbide particles embedded in an iron aluminide matrix whereas the microstructure of the materials produced by the HIP technique was less regular. A maximum hardness of 1820 HV was measured for the material produced using HIP and a maximum fracture toughness of 16.3 MPa 1/2 was obtained for the material produced by SHS. Hardness values obtained from samples produced by the HIP technique were higher than those obtained from samples produced by the SHS technique. The SHS samples had better fracture toughness. The results of the oxidation resistance tests showed that TiC/Fe-Al composite materials can be recommended for use in oxidative environments holding temperatures up to 800°C.

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