Effect of Zr and Si addition on high temperature mechanical properties of near-α Ti-Al-Zr-Sn based alloys

M. Jayaprakash; D. H. Ping; Y. Yamabe-Mitarai

doi:10.1016/j.msea.2014.06.078

Effect of Zr and Si addition on high temperature mechanical properties of near-α Ti-Al-Zr-Sn based alloys

M. Jayaprakash, D. H. Ping, Y. Yamabe-Mitarai

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

26 Citations (Scopus)

Abstract

The mechanical properties and microstructural evolution of Ti-Al-Zr-Sn based near α-Ti alloys with various amounts of Zr and Si have been systematically investigated. The compression test results reveal that higher contents of Zr and Si can improve the yielding strength both at room temperature and high temperature (650°C). The enhanced yield strength was found to be contributed mainly by fine silicide precipitates (Ti₅Si₃). Zr was enriched in the silicide formed at α-lath boundaries. The microstructural characterization of the alloys with various alloying elements has been studied using transmission electron microscopy (TEM).

Original language	English
Pages (from-to)	456-461
Number of pages	6
Journal	Materials Science and Engineering A
Volume	612
DOIs	https://doi.org/10.1016/j.msea.2014.06.078
Publication status	Published - 2014 Aug 26
Externally published	Yes

Keywords

Compression test
Microstructure
Ti alloy
Transmission electron microscopy (TEM)
Yielding strength

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "The mechanical properties and microstructural evolution of Ti-Al-Zr-Sn based near α-Ti alloys with various amounts of Zr and Si have been systematically investigated. The compression test results reveal that higher contents of Zr and Si can improve the yielding strength both at room temperature and high temperature (650°C). The enhanced yield strength was found to be contributed mainly by fine silicide precipitates (Ti5Si3). Zr was enriched in the silicide formed at α-lath boundaries. The microstructural characterization of the alloys with various alloying elements has been studied using transmission electron microscopy (TEM).",

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T1 - Effect of Zr and Si addition on high temperature mechanical properties of near-α Ti-Al-Zr-Sn based alloys

AU - Jayaprakash, M.

AU - Ping, D. H.

AU - Yamabe-Mitarai, Y.

PY - 2014/8/26

Y1 - 2014/8/26

N2 - The mechanical properties and microstructural evolution of Ti-Al-Zr-Sn based near α-Ti alloys with various amounts of Zr and Si have been systematically investigated. The compression test results reveal that higher contents of Zr and Si can improve the yielding strength both at room temperature and high temperature (650°C). The enhanced yield strength was found to be contributed mainly by fine silicide precipitates (Ti5Si3). Zr was enriched in the silicide formed at α-lath boundaries. The microstructural characterization of the alloys with various alloying elements has been studied using transmission electron microscopy (TEM).

AB - The mechanical properties and microstructural evolution of Ti-Al-Zr-Sn based near α-Ti alloys with various amounts of Zr and Si have been systematically investigated. The compression test results reveal that higher contents of Zr and Si can improve the yielding strength both at room temperature and high temperature (650°C). The enhanced yield strength was found to be contributed mainly by fine silicide precipitates (Ti5Si3). Zr was enriched in the silicide formed at α-lath boundaries. The microstructural characterization of the alloys with various alloying elements has been studied using transmission electron microscopy (TEM).

KW - Compression test

KW - Microstructure

KW - Ti alloy

KW - Transmission electron microscopy (TEM)

KW - Yielding strength

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Effect of Zr and Si addition on high temperature mechanical properties of near-α Ti-Al-Zr-Sn based alloys

Abstract

Keywords

ASJC Scopus subject areas

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