Strengthening behavior of in situ-synthesized (TiC-TiB)/Ti composites by powder metallurgy and hot extrusion

Shufeng Li; Katsuyoshi Kondoh; Hisashi Imai; Biao Chen; Lei Jia; Junko Umeda; Yabo Fu

doi:10.1016/j.matdes.2016.01.092

Strengthening behavior of in situ-synthesized (TiC-TiB)/Ti composites by powder metallurgy and hot extrusion

Shufeng Li, Katsuyoshi Kondoh, Hisashi Imai, Biao Chen, Lei Jia, Junko Umeda, Yabo Fu

Research output: Contribution to journal › Article › peer-review

206 Scopus citations

Abstract

Titanium matrix composites (TMCs) reinforced with in situ-formed TiC particles and TiB whiskers were prepared by reacting titanium and B₄C via powder metallurgy and hot extrusion. The effect of the in situ-formed TiC-TiB hybrid reinforcements on the microstructure and mechanical behavior of the TMCs was investigated. TiB whiskers exhibited favorable alignment, orienting parallel to the deformation axis after hot extrusion, while TiC particles and TiB whiskers were distributed homogenously throughout the extruded composites. The synthesized TMCs with a 13.6% volume fraction of TiC-TiB hybrid reinforcements presented a σ_UTS of 1138 MPa, representing a 74% improvement compared to pure titanium, and retained an acceptable elongation of 2.6%. The synergistic strengthening effect of TiC particles and TiB whiskers was investigated via in situ tensile observations based on the load-transfer mechanism between the titanium matrix and TiC-TiB reinforcements.

Original language	English
Pages (from-to)	127-132
Number of pages	6
Journal	Materials and Design
Volume	95
DOIs	https://doi.org/10.1016/j.matdes.2016.01.092
State	Published - 5 Apr 2016
Externally published	Yes

Keywords

In situ reaction
Mechanical properties
Metal matrix composites
Microstructure
Powder metallurgy
Titanium

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10.1016/j.matdes.2016.01.092

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title = "Strengthening behavior of in situ-synthesized (TiC-TiB)/Ti composites by powder metallurgy and hot extrusion",

abstract = "Titanium matrix composites (TMCs) reinforced with in situ-formed TiC particles and TiB whiskers were prepared by reacting titanium and B4C via powder metallurgy and hot extrusion. The effect of the in situ-formed TiC-TiB hybrid reinforcements on the microstructure and mechanical behavior of the TMCs was investigated. TiB whiskers exhibited favorable alignment, orienting parallel to the deformation axis after hot extrusion, while TiC particles and TiB whiskers were distributed homogenously throughout the extruded composites. The synthesized TMCs with a 13.6% volume fraction of TiC-TiB hybrid reinforcements presented a σUTS of 1138 MPa, representing a 74% improvement compared to pure titanium, and retained an acceptable elongation of 2.6%. The synergistic strengthening effect of TiC particles and TiB whiskers was investigated via in situ tensile observations based on the load-transfer mechanism between the titanium matrix and TiC-TiB reinforcements.",

keywords = "In situ reaction, Mechanical properties, Metal matrix composites, Microstructure, Powder metallurgy, Titanium",

author = "Shufeng Li and Katsuyoshi Kondoh and Hisashi Imai and Biao Chen and Lei Jia and Junko Umeda and Yabo Fu",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

year = "2016",

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doi = "10.1016/j.matdes.2016.01.092",

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T1 - Strengthening behavior of in situ-synthesized (TiC-TiB)/Ti composites by powder metallurgy and hot extrusion

AU - Li, Shufeng

AU - Kondoh, Katsuyoshi

AU - Imai, Hisashi

AU - Chen, Biao

AU - Jia, Lei

AU - Umeda, Junko

AU - Fu, Yabo

PY - 2016/4/5

Y1 - 2016/4/5

N2 - Titanium matrix composites (TMCs) reinforced with in situ-formed TiC particles and TiB whiskers were prepared by reacting titanium and B4C via powder metallurgy and hot extrusion. The effect of the in situ-formed TiC-TiB hybrid reinforcements on the microstructure and mechanical behavior of the TMCs was investigated. TiB whiskers exhibited favorable alignment, orienting parallel to the deformation axis after hot extrusion, while TiC particles and TiB whiskers were distributed homogenously throughout the extruded composites. The synthesized TMCs with a 13.6% volume fraction of TiC-TiB hybrid reinforcements presented a σUTS of 1138 MPa, representing a 74% improvement compared to pure titanium, and retained an acceptable elongation of 2.6%. The synergistic strengthening effect of TiC particles and TiB whiskers was investigated via in situ tensile observations based on the load-transfer mechanism between the titanium matrix and TiC-TiB reinforcements.

AB - Titanium matrix composites (TMCs) reinforced with in situ-formed TiC particles and TiB whiskers were prepared by reacting titanium and B4C via powder metallurgy and hot extrusion. The effect of the in situ-formed TiC-TiB hybrid reinforcements on the microstructure and mechanical behavior of the TMCs was investigated. TiB whiskers exhibited favorable alignment, orienting parallel to the deformation axis after hot extrusion, while TiC particles and TiB whiskers were distributed homogenously throughout the extruded composites. The synthesized TMCs with a 13.6% volume fraction of TiC-TiB hybrid reinforcements presented a σUTS of 1138 MPa, representing a 74% improvement compared to pure titanium, and retained an acceptable elongation of 2.6%. The synergistic strengthening effect of TiC particles and TiB whiskers was investigated via in situ tensile observations based on the load-transfer mechanism between the titanium matrix and TiC-TiB reinforcements.

KW - In situ reaction

KW - Mechanical properties

KW - Metal matrix composites

KW - Microstructure

KW - Powder metallurgy

KW - Titanium

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U2 - 10.1016/j.matdes.2016.01.092

DO - 10.1016/j.matdes.2016.01.092

M3 - 文章

AN - SCOPUS:84960107023

SN - 0264-1275

VL - 95

SP - 127

EP - 132

JO - Materials and Design

JF - Materials and Design

ER -

Strengthening behavior of in situ-synthesized (TiC-TiB)/Ti composites by powder metallurgy and hot extrusion

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Keywords

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