Grain-size control in Ti-48Al-2Cr-2Nb with yttrium additions

P. B. Trivedi; E. G. Baburaj; A. Genç; L. Ovecoglu; S. N. Patankar; F. H. Froes

doi:10.1007/s11661-002-0395-8

Grain-size control in Ti-48Al-2Cr-2Nb with yttrium additions

P. B. Trivedi
, E. G. Baburaj
, A. Genç
, L. Ovecoglu
, S. N. Patankar
, F. H. Froes

University of Idaho
University of Houston
Istanbul Technical University

Araştırma çıktısı: Dergi yayını › Makale › Hakem

17 Atıf (Scopus)

Özet

A gas-atomized (GA) prealloyed powder of the Ti-48Al-2Cr-2Nb intermetallic and 1.6 wt pct Y were mechanically alloyed (MA) and hot isostatically pressed (hipped) to produce a fully dense nanocrystalline material. Mechanical alloying of the as-blended powder for 16 hours resulted in the formation of a disordered fcc phase. Hipping of the alloy powder produced a single-phase nanocrystalline TiAl intermetallic, containing a distribution of 20 to 35-nm-sized Al₂Y₄O₉ particles. The formation of oxide particles occurred by the chemical combination of Al and Y with oxygen, which entered as a contaminant during milling. Oxide particles increased the hardness of the intermetallic compound and minimized grain growth even at 0.8 T_m, where T_m is the melting point of the compound.

Orijinal dil	İngilizce
Makale numarası	395
Sayfa (başlangıç-bitiş)	2729-2734
Sayfa sayısı	6
Dergi	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Hacim	33
Basın numarası	8
DOI'lar	https://doi.org/10.1007/s11661-002-0395-8
Yayın durumu	Yayınlandı - 2002
Harici olarak yayınlandı	Evet

Belgeye Erişim

10.1007/s11661-002-0395-8

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Grain-size control in Ti-48Al-2Cr-2Nb with yttrium additions",

abstract = "A gas-atomized (GA) prealloyed powder of the Ti-48Al-2Cr-2Nb intermetallic and 1.6 wt pct Y were mechanically alloyed (MA) and hot isostatically pressed (hipped) to produce a fully dense nanocrystalline material. Mechanical alloying of the as-blended powder for 16 hours resulted in the formation of a disordered fcc phase. Hipping of the alloy powder produced a single-phase nanocrystalline TiAl intermetallic, containing a distribution of 20 to 35-nm-sized Al2Y4O9 particles. The formation of oxide particles occurred by the chemical combination of Al and Y with oxygen, which entered as a contaminant during milling. Oxide particles increased the hardness of the intermetallic compound and minimized grain growth even at 0.8 Tm, where Tm is the melting point of the compound.",

author = "Trivedi, \{P. B.\} and Baburaj, \{E. G.\} and A. Gen{\c c} and L. Ovecoglu and Patankar, \{S. N.\} and Froes, \{F. H.\}",

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doi = "10.1007/s11661-002-0395-8",

language = "English",

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T1 - Grain-size control in Ti-48Al-2Cr-2Nb with yttrium additions

AU - Trivedi, P. B.

AU - Baburaj, E. G.

AU - Genç, A.

AU - Ovecoglu, L.

AU - Patankar, S. N.

AU - Froes, F. H.

PY - 2002

Y1 - 2002

N2 - A gas-atomized (GA) prealloyed powder of the Ti-48Al-2Cr-2Nb intermetallic and 1.6 wt pct Y were mechanically alloyed (MA) and hot isostatically pressed (hipped) to produce a fully dense nanocrystalline material. Mechanical alloying of the as-blended powder for 16 hours resulted in the formation of a disordered fcc phase. Hipping of the alloy powder produced a single-phase nanocrystalline TiAl intermetallic, containing a distribution of 20 to 35-nm-sized Al2Y4O9 particles. The formation of oxide particles occurred by the chemical combination of Al and Y with oxygen, which entered as a contaminant during milling. Oxide particles increased the hardness of the intermetallic compound and minimized grain growth even at 0.8 Tm, where Tm is the melting point of the compound.

AB - A gas-atomized (GA) prealloyed powder of the Ti-48Al-2Cr-2Nb intermetallic and 1.6 wt pct Y were mechanically alloyed (MA) and hot isostatically pressed (hipped) to produce a fully dense nanocrystalline material. Mechanical alloying of the as-blended powder for 16 hours resulted in the formation of a disordered fcc phase. Hipping of the alloy powder produced a single-phase nanocrystalline TiAl intermetallic, containing a distribution of 20 to 35-nm-sized Al2Y4O9 particles. The formation of oxide particles occurred by the chemical combination of Al and Y with oxygen, which entered as a contaminant during milling. Oxide particles increased the hardness of the intermetallic compound and minimized grain growth even at 0.8 Tm, where Tm is the melting point of the compound.

UR - https://www.scopus.com/pages/publications/0036695773

U2 - 10.1007/s11661-002-0395-8

DO - 10.1007/s11661-002-0395-8

M3 - Article

AN - SCOPUS:0036695773

SN - 1073-5623

VL - 33

SP - 2729

EP - 2734

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 8

M1 - 395

ER -

Grain-size control in Ti-48Al-2Cr-2Nb with yttrium additions

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