Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders

Although titanium alloys are known to possess low density, high specific strength, and excellent corrosion resistance, their low specific stiffness and wear resistance have restricted their widespread application. Cost-effective discontinuously reinforced titanium and its alloys containing titanium...

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Autores principales:	Hiroshi IZUI, Akinori OOTA, Konomi MATSUURA, Shoji KAMEGAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	titanium matrix composites hydride-dehydride ti powder gas-atomized ti powder tib whiskers tib clusters spark plasma sintering tib volume fraction tensile properties Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/ac152319edc94e8fb134dfe9e4953d8e
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spelling	oai:doaj.org-article:ac152319edc94e8fb134dfe9e4953d8e2021-11-26T06:53:45ZTensile behavior of TiB-reinforced Ti matrix composites with different titanium powders2187-974510.1299/mej.15-00571https://doaj.org/article/ac152319edc94e8fb134dfe9e4953d8e2016-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/4/3_15-00571/_pdf/-char/enhttps://doaj.org/toc/2187-9745Although titanium alloys are known to possess low density, high specific strength, and excellent corrosion resistance, their low specific stiffness and wear resistance have restricted their widespread application. Cost-effective discontinuously reinforced titanium and its alloys containing titanium boride (TiB) are emerging as possible candidates for overcoming these limitations. The mechanical properties of titanium matrix composites (TMC) are mainly dependent on the matrix composition, and on the volume fraction, and distribution of reinforcements. The distribution of reinforcements in the matrix depends on the particle shape and size of the Ti matrix powder. The purpose of this study was to investigate the effect of Ti powders produced by different manufacturing processes on the tensile behavior of titanium compacts and TiB reinforced Ti matrix composites (TiB/Ti). The Ti powders were produced by the hydride-dehydride (HDH) or the gas atomization (GA) process with particle sizes of <45 μm and <150 μm. The TiB/Ti composites were produced by a spark plasma sintering process. The Ti compact using Ti particle sizes of <45 μm, with higher oxygen content, possessed high tensile strength. This is because of the influence of oxygen as an interstitial strengthening element in the titanium alloy, which is well known. The TiB/Ti composites using HDH Ti powder with a particle size of <45 μm had the highest Young's modulus, tensile strength, and Vickers microhardness. For the HDH Ti powder with a particle size of <45 μm, small TiB clusters connected like a network were uniformly distributed around the Ti matrix particles. Cracks in the composites initiated at the TiB clusters when a tensile load was applied to the composites. The presence of small TiB clusters inhibited the formation of cracks.Hiroshi IZUIAkinori OOTAKonomi MATSUURAShoji KAMEGAWAThe Japan Society of Mechanical Engineersarticletitanium matrix compositeshydride-dehydride ti powdergas-atomized ti powdertib whiskerstib clustersspark plasma sinteringtib volume fractiontensile propertiesMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 4, Pp 15-00571-15-00571 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	titanium matrix composites hydride-dehydride ti powder gas-atomized ti powder tib whiskers tib clusters spark plasma sintering tib volume fraction tensile properties Mechanical engineering and machinery TJ1-1570
spellingShingle	titanium matrix composites hydride-dehydride ti powder gas-atomized ti powder tib whiskers tib clusters spark plasma sintering tib volume fraction tensile properties Mechanical engineering and machinery TJ1-1570 Hiroshi IZUI Akinori OOTA Konomi MATSUURA Shoji KAMEGAWA Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders
description	Although titanium alloys are known to possess low density, high specific strength, and excellent corrosion resistance, their low specific stiffness and wear resistance have restricted their widespread application. Cost-effective discontinuously reinforced titanium and its alloys containing titanium boride (TiB) are emerging as possible candidates for overcoming these limitations. The mechanical properties of titanium matrix composites (TMC) are mainly dependent on the matrix composition, and on the volume fraction, and distribution of reinforcements. The distribution of reinforcements in the matrix depends on the particle shape and size of the Ti matrix powder. The purpose of this study was to investigate the effect of Ti powders produced by different manufacturing processes on the tensile behavior of titanium compacts and TiB reinforced Ti matrix composites (TiB/Ti). The Ti powders were produced by the hydride-dehydride (HDH) or the gas atomization (GA) process with particle sizes of <45 μm and <150 μm. The TiB/Ti composites were produced by a spark plasma sintering process. The Ti compact using Ti particle sizes of <45 μm, with higher oxygen content, possessed high tensile strength. This is because of the influence of oxygen as an interstitial strengthening element in the titanium alloy, which is well known. The TiB/Ti composites using HDH Ti powder with a particle size of <45 μm had the highest Young's modulus, tensile strength, and Vickers microhardness. For the HDH Ti powder with a particle size of <45 μm, small TiB clusters connected like a network were uniformly distributed around the Ti matrix particles. Cracks in the composites initiated at the TiB clusters when a tensile load was applied to the composites. The presence of small TiB clusters inhibited the formation of cracks.
format	article
author	Hiroshi IZUI Akinori OOTA Konomi MATSUURA Shoji KAMEGAWA
author_facet	Hiroshi IZUI Akinori OOTA Konomi MATSUURA Shoji KAMEGAWA
author_sort	Hiroshi IZUI
title	Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders
title_short	Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders
title_full	Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders
title_fullStr	Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders
title_full_unstemmed	Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders
title_sort	tensile behavior of tib-reinforced ti matrix composites with different titanium powders
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/ac152319edc94e8fb134dfe9e4953d8e
work_keys_str_mv	AT hiroshiizui tensilebehavioroftibreinforcedtimatrixcompositeswithdifferenttitaniumpowders AT akinorioota tensilebehavioroftibreinforcedtimatrixcompositeswithdifferenttitaniumpowders AT konomimatsuura tensilebehavioroftibreinforcedtimatrixcompositeswithdifferenttitaniumpowders AT shojikamegawa tensilebehavioroftibreinforcedtimatrixcompositeswithdifferenttitaniumpowders
_version_	1718409738936385536

Tensile behavior of TiB-reinforced Ti matrix composites with different titanium powders

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