The influence of Zr content on microstructure and precipitation of silicide in as-cast near α titanium alloys

Binguo Fu; Hongwei Wang; Chunming Zou; Zunjie Wei

doi:10.1016/j.matchar.2014.09.015

The influence of Zr content on microstructure and precipitation of silicide in as-cast near α titanium alloys

Binguo Fu
, Hongwei Wang
, Chunming Zou
, Zunjie Wei^*

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

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

95 Scopus citations

Abstract

The influence of Zr content on microstructure and precipitation of silicide in as-cast Ti-1100-xZr (x =4, 6 wt.%) alloyswas systematically investigated. The results demonstrate that the addition of 6 wt.% Zr promotes the essential refinement of alloy microstructures and the formation of TiSi and ternary (TiZr)₆Si₃ (S₂ type) silicides. The TiSi and S₂ type silicides are found to precipitate heterogeneously in the retained β phase. The TiSi phase has specific orientation relationships with the retained β phase: (102)_TiSi//(110)_β, [241]_TiSi//[001]_β and (100)_TiSi//(101)_β, [011]_TiSi//[111]_β. The long axis direction of S₂ type silicide has geometric connection with the direction of plates of α phase due to the orientation relationships between the S₂ phase and the α phase: (0110)_S2//(2110)_α, [2113]_S2//[0001]_α and (1010)_S2//(1210)_α, [1213]_S2//[1011]_α. It is also found that the Zr element added to titanium alloys affects the lattice parameters.

Original language	English
Pages (from-to)	17-24
Number of pages	8
Journal	Materials Characterization
Volume	99
DOIs	https://doi.org/10.1016/j.matchar.2014.09.015
State	Published - Jan 2015

Keywords

Microstructure
Near α titanium alloy
Silicide
Zr content

Access to Document

10.1016/j.matchar.2014.09.015

Cite this

@article{51dcd165519743219ceff1b1016b2515,

title = "The influence of Zr content on microstructure and precipitation of silicide in as-cast near α titanium alloys",

abstract = "The influence of Zr content on microstructure and precipitation of silicide in as-cast Ti-1100-xZr (x =4, 6 wt.\%) alloyswas systematically investigated. The results demonstrate that the addition of 6 wt.\% Zr promotes the essential refinement of alloy microstructures and the formation of TiSi and ternary (TiZr)6Si3 (S2 type) silicides. The TiSi and S2 type silicides are found to precipitate heterogeneously in the retained β phase. The TiSi phase has specific orientation relationships with the retained β phase: (102)TiSi//(110)β, [241]TiSi//[001]β and (100)TiSi//(101)β, [011]TiSi//[111]β. The long axis direction of S2 type silicide has geometric connection with the direction of plates of α phase due to the orientation relationships between the S2 phase and the α phase: (0110)S2//(2110)α, [2113]S2//[0001]α and (1010)S2//(1210)α, [1213]S2//[1011]α. It is also found that the Zr element added to titanium alloys affects the lattice parameters.",

keywords = "Microstructure, Near α titanium alloy, Silicide, Zr content",

author = "Binguo Fu and Hongwei Wang and Chunming Zou and Zunjie Wei",

year = "2015",

month = jan,

doi = "10.1016/j.matchar.2014.09.015",

language = "英语",

volume = "99",

pages = "17--24",

journal = "Materials Characterization",

issn = "1044-5803",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - The influence of Zr content on microstructure and precipitation of silicide in as-cast near α titanium alloys

AU - Fu, Binguo

AU - Wang, Hongwei

AU - Zou, Chunming

AU - Wei, Zunjie

PY - 2015/1

Y1 - 2015/1

N2 - The influence of Zr content on microstructure and precipitation of silicide in as-cast Ti-1100-xZr (x =4, 6 wt.%) alloyswas systematically investigated. The results demonstrate that the addition of 6 wt.% Zr promotes the essential refinement of alloy microstructures and the formation of TiSi and ternary (TiZr)6Si3 (S2 type) silicides. The TiSi and S2 type silicides are found to precipitate heterogeneously in the retained β phase. The TiSi phase has specific orientation relationships with the retained β phase: (102)TiSi//(110)β, [241]TiSi//[001]β and (100)TiSi//(101)β, [011]TiSi//[111]β. The long axis direction of S2 type silicide has geometric connection with the direction of plates of α phase due to the orientation relationships between the S2 phase and the α phase: (0110)S2//(2110)α, [2113]S2//[0001]α and (1010)S2//(1210)α, [1213]S2//[1011]α. It is also found that the Zr element added to titanium alloys affects the lattice parameters.

AB - The influence of Zr content on microstructure and precipitation of silicide in as-cast Ti-1100-xZr (x =4, 6 wt.%) alloyswas systematically investigated. The results demonstrate that the addition of 6 wt.% Zr promotes the essential refinement of alloy microstructures and the formation of TiSi and ternary (TiZr)6Si3 (S2 type) silicides. The TiSi and S2 type silicides are found to precipitate heterogeneously in the retained β phase. The TiSi phase has specific orientation relationships with the retained β phase: (102)TiSi//(110)β, [241]TiSi//[001]β and (100)TiSi//(101)β, [011]TiSi//[111]β. The long axis direction of S2 type silicide has geometric connection with the direction of plates of α phase due to the orientation relationships between the S2 phase and the α phase: (0110)S2//(2110)α, [2113]S2//[0001]α and (1010)S2//(1210)α, [1213]S2//[1011]α. It is also found that the Zr element added to titanium alloys affects the lattice parameters.

KW - Microstructure

KW - Near α titanium alloy

KW - Silicide

KW - Zr content

UR - https://www.scopus.com/pages/publications/84910599711

U2 - 10.1016/j.matchar.2014.09.015

DO - 10.1016/j.matchar.2014.09.015

M3 - 文章

AN - SCOPUS:84910599711

SN - 1044-5803

VL - 99

SP - 17

EP - 24

JO - Materials Characterization

JF - Materials Characterization

ER -

The influence of Zr content on microstructure and precipitation of silicide in as-cast near α titanium alloys

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this