Microstructure of fine-grained β-type titanium alloy produced by mechanical alloying and consolidation process

Toshihiro Tsuchiyma, S. Hamamoto, K. Nakashima, Setsuo Takaki

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The mechanical alloying (MA) treatment was applied to the mixed powder of titanium and iron with average composition of Ti-15 mass%Fe. Heptane was also used for the MA treatment as a source of carbon. The MA treatment resulted in the production of alloyed powder in which all constituents were fully dissolved in the solid solution. By the consolidation of the MA-treated powder (hot rolling at 1073 K), a bulk material of β-type titanium alloy with fine-grained structure was successfully obtained. As a result of TEM observation, it was found that the TiC particles with a size of 200 nm were dispersed within the β-Ti matrix structure. The mean grain size of β-Ti was measured at around 1-2 μm. Although the fine-grained β-type titanium alloy produced by the MA treatment and consolidation process has very high hardness, it was also found that a significant amount of metastable coarse metallic compounds, Ti2Fe, existed in the material, leading to the deterioration of ductility of the consolidated material.

Original languageEnglish
Pages (from-to)120-127
Number of pages8
JournalMaterials Science and Engineering A
Volume474
Issue number1-2
DOIs
Publication statusPublished - Feb 15 2008

Fingerprint

consolidation
Mechanical alloying
titanium alloys
Titanium alloys
Consolidation
alloying
microstructure
Microstructure
Powders
Metallic compounds
Heptanes
Hot rolling
Heptane
heptanes
Titanium
ductility
deterioration
Deterioration
Ductility
Solid solutions

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Microstructure of fine-grained β-type titanium alloy produced by mechanical alloying and consolidation process. / Tsuchiyma, Toshihiro; Hamamoto, S.; Nakashima, K.; Takaki, Setsuo.

In: Materials Science and Engineering A, Vol. 474, No. 1-2, 15.02.2008, p. 120-127.

Research output: Contribution to journalArticle

@article{eb53a0262f9f471084813204286798b8,
title = "Microstructure of fine-grained β-type titanium alloy produced by mechanical alloying and consolidation process",
abstract = "The mechanical alloying (MA) treatment was applied to the mixed powder of titanium and iron with average composition of Ti-15 mass{\%}Fe. Heptane was also used for the MA treatment as a source of carbon. The MA treatment resulted in the production of alloyed powder in which all constituents were fully dissolved in the solid solution. By the consolidation of the MA-treated powder (hot rolling at 1073 K), a bulk material of β-type titanium alloy with fine-grained structure was successfully obtained. As a result of TEM observation, it was found that the TiC particles with a size of 200 nm were dispersed within the β-Ti matrix structure. The mean grain size of β-Ti was measured at around 1-2 μm. Although the fine-grained β-type titanium alloy produced by the MA treatment and consolidation process has very high hardness, it was also found that a significant amount of metastable coarse metallic compounds, Ti2Fe, existed in the material, leading to the deterioration of ductility of the consolidated material.",
author = "Toshihiro Tsuchiyma and S. Hamamoto and K. Nakashima and Setsuo Takaki",
year = "2008",
month = "2",
day = "15",
doi = "10.1016/j.msea.2007.03.104",
language = "English",
volume = "474",
pages = "120--127",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Microstructure of fine-grained β-type titanium alloy produced by mechanical alloying and consolidation process

AU - Tsuchiyma, Toshihiro

AU - Hamamoto, S.

AU - Nakashima, K.

AU - Takaki, Setsuo

PY - 2008/2/15

Y1 - 2008/2/15

N2 - The mechanical alloying (MA) treatment was applied to the mixed powder of titanium and iron with average composition of Ti-15 mass%Fe. Heptane was also used for the MA treatment as a source of carbon. The MA treatment resulted in the production of alloyed powder in which all constituents were fully dissolved in the solid solution. By the consolidation of the MA-treated powder (hot rolling at 1073 K), a bulk material of β-type titanium alloy with fine-grained structure was successfully obtained. As a result of TEM observation, it was found that the TiC particles with a size of 200 nm were dispersed within the β-Ti matrix structure. The mean grain size of β-Ti was measured at around 1-2 μm. Although the fine-grained β-type titanium alloy produced by the MA treatment and consolidation process has very high hardness, it was also found that a significant amount of metastable coarse metallic compounds, Ti2Fe, existed in the material, leading to the deterioration of ductility of the consolidated material.

AB - The mechanical alloying (MA) treatment was applied to the mixed powder of titanium and iron with average composition of Ti-15 mass%Fe. Heptane was also used for the MA treatment as a source of carbon. The MA treatment resulted in the production of alloyed powder in which all constituents were fully dissolved in the solid solution. By the consolidation of the MA-treated powder (hot rolling at 1073 K), a bulk material of β-type titanium alloy with fine-grained structure was successfully obtained. As a result of TEM observation, it was found that the TiC particles with a size of 200 nm were dispersed within the β-Ti matrix structure. The mean grain size of β-Ti was measured at around 1-2 μm. Although the fine-grained β-type titanium alloy produced by the MA treatment and consolidation process has very high hardness, it was also found that a significant amount of metastable coarse metallic compounds, Ti2Fe, existed in the material, leading to the deterioration of ductility of the consolidated material.

UR - http://www.scopus.com/inward/record.url?scp=37649024067&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37649024067&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2007.03.104

DO - 10.1016/j.msea.2007.03.104

M3 - Article

AN - SCOPUS:37649024067

VL - 474

SP - 120

EP - 127

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 1-2

ER -