The influences of trace TiB and TiC on microstructure refinement and mechanical properties of in situ synthesized Ti matrix composite

Shuyu Sun; Minmin Wang; Liqiang Wang; Jining Qin; Weijie Lu; Di Zhang

doi:10.1016/j.compositesb.2012.01.075

The influences of trace TiB and TiC on microstructure refinement and mechanical properties of in situ synthesized Ti matrix composite

Shuyu Sun, Minmin Wang, Liqiang Wang, Jining Qin, Weijie Lu, Di Zhang

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

62 Scopus citations

Abstract

Ti-5Al-5Mo-5V-1Fe-1Cr Ti alloy and Ti-5Al-5Mo-5V-1Fe-1Cr Ti matrix composites containing different weight fractions of trace TiB and TiC are fabricated via in situ synthesis method. The as-cast ingots are subjected to thermo-mechanical processing and heat treatment. The Widmannstatten structure is obtained after the heat treatment. The microstructure length scales of the materials are identified. The identification indicates that 0.4 wt.% TiB and 0.1 wt.% TiC can reduce the average size of the β grains by more than 50%. Whereas the extent of the microstructure refinement gradually decreases while increasing the weight fraction of the trace reinforcements. The influences of weight fraction and morphology of the trace TiB and TiC on microstructure refinement are researched in this work. Moreover, the tensile properties of the heat-treated materials are examined. It is revealed that Hall-Petch mechanism plays an identically important role in improving the mechanical properties of the composites comparing with the load bearing and dispersion strengthening of the trace reinforcements. © 2011 Elsevier Ltd. All rights reserved.

Original language	English (US)
Pages (from-to)	3334-3337
Number of pages	4
Journal	Composites Part B: Engineering
Volume	43
Issue number	8
DOIs	https://doi.org/10.1016/j.compositesb.2012.01.075
State	Published - Dec 1 2012
Externally published	Yes

ASJC Scopus subject areas

Mechanics of Materials
Ceramics and Composites
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.compositesb.2012.01.075

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title = "The influences of trace TiB and TiC on microstructure refinement and mechanical properties of in situ synthesized Ti matrix composite",

abstract = "Ti-5Al-5Mo-5V-1Fe-1Cr Ti alloy and Ti-5Al-5Mo-5V-1Fe-1Cr Ti matrix composites containing different weight fractions of trace TiB and TiC are fabricated via in situ synthesis method. The as-cast ingots are subjected to thermo-mechanical processing and heat treatment. The Widmannstatten structure is obtained after the heat treatment. The microstructure length scales of the materials are identified. The identification indicates that 0.4 wt.% TiB and 0.1 wt.% TiC can reduce the average size of the β grains by more than 50%. Whereas the extent of the microstructure refinement gradually decreases while increasing the weight fraction of the trace reinforcements. The influences of weight fraction and morphology of the trace TiB and TiC on microstructure refinement are researched in this work. Moreover, the tensile properties of the heat-treated materials are examined. It is revealed that Hall-Petch mechanism plays an identically important role in improving the mechanical properties of the composites comparing with the load bearing and dispersion strengthening of the trace reinforcements. {\textcopyright} 2011 Elsevier Ltd. All rights reserved.",

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AU - Sun, Shuyu

AU - Wang, Minmin

AU - Wang, Liqiang

AU - Qin, Jining

AU - Lu, Weijie

AU - Zhang, Di

N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21

PY - 2012/12/1

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N2 - Ti-5Al-5Mo-5V-1Fe-1Cr Ti alloy and Ti-5Al-5Mo-5V-1Fe-1Cr Ti matrix composites containing different weight fractions of trace TiB and TiC are fabricated via in situ synthesis method. The as-cast ingots are subjected to thermo-mechanical processing and heat treatment. The Widmannstatten structure is obtained after the heat treatment. The microstructure length scales of the materials are identified. The identification indicates that 0.4 wt.% TiB and 0.1 wt.% TiC can reduce the average size of the β grains by more than 50%. Whereas the extent of the microstructure refinement gradually decreases while increasing the weight fraction of the trace reinforcements. The influences of weight fraction and morphology of the trace TiB and TiC on microstructure refinement are researched in this work. Moreover, the tensile properties of the heat-treated materials are examined. It is revealed that Hall-Petch mechanism plays an identically important role in improving the mechanical properties of the composites comparing with the load bearing and dispersion strengthening of the trace reinforcements. © 2011 Elsevier Ltd. All rights reserved.

AB - Ti-5Al-5Mo-5V-1Fe-1Cr Ti alloy and Ti-5Al-5Mo-5V-1Fe-1Cr Ti matrix composites containing different weight fractions of trace TiB and TiC are fabricated via in situ synthesis method. The as-cast ingots are subjected to thermo-mechanical processing and heat treatment. The Widmannstatten structure is obtained after the heat treatment. The microstructure length scales of the materials are identified. The identification indicates that 0.4 wt.% TiB and 0.1 wt.% TiC can reduce the average size of the β grains by more than 50%. Whereas the extent of the microstructure refinement gradually decreases while increasing the weight fraction of the trace reinforcements. The influences of weight fraction and morphology of the trace TiB and TiC on microstructure refinement are researched in this work. Moreover, the tensile properties of the heat-treated materials are examined. It is revealed that Hall-Petch mechanism plays an identically important role in improving the mechanical properties of the composites comparing with the load bearing and dispersion strengthening of the trace reinforcements. © 2011 Elsevier Ltd. All rights reserved.

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IS - 8

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The influences of trace TiB and TiC on microstructure refinement and mechanical properties of in situ synthesized Ti matrix composite

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