Carbide and hydride formation during mechanical alloying of titanium and aluminium with hexane

Jari Keskinen, Andrew Pogany, James Rubin, Pekka Ruuskanen

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)

Abstract

Mixtures of elemental titanium and aluminium powders of overall composition TixAl1+x (x = 0.02, 0.3, 0.4, 0.5, 0.6, 0.7, 0.75, 0.8) were mechanically alloyed in a planetary-type ball mill.
Hexane was added as a process control agent to reduce powder agglomeration during milling. The as-milled powders were characterized using X-ray diffraction, differential scanning calorimetry, scanning electron microscopy and transmission electron microscopy. During milling, the hexane is partially dissociated, with the free carbon and hydrogen incorporated within the TixAl1 − x alloy powders in increasing amounts with increasing milling time.
The amount of incorporated carbon increases with the initial Ti content of the powder mixture, reaching a maximum of 12 wt.% incorporated into an initial Ti0.8Al0.2 powder mixture after 100 h of milling. The hydrogen is found to combine with elemental Ti to form TiH2−x, with an initial Ti0.5Al0.5 powder mixture milled for 40 h incorporating 0.95 wt.% H. The milled (TixAl1 − x + C) powder mixtures form a large fraction of amorphous phase near x = 0.5.
Annealing of the as-milled powders incorporating dissolved carbon and hydrogen produced a mixture of Al2Ti4C2, TiC and TiAl.
Original languageEnglish
Pages (from-to)205-211
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume196
Issue number1-2
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

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Mechanical alloying
Hexanes
Titanium
Hexane
Aluminum
Hydrides
carbides
Powders
alloying
hydrides
Carbides
titanium
aluminum
Hydrogen
Carbon
carbon
hydrogen
Ball mills
agglomeration
Process control

Cite this

@article{888234a4c0b041b79532947e2b039403,
title = "Carbide and hydride formation during mechanical alloying of titanium and aluminium with hexane",
abstract = "Mixtures of elemental titanium and aluminium powders of overall composition TixAl1+x (x = 0.02, 0.3, 0.4, 0.5, 0.6, 0.7, 0.75, 0.8) were mechanically alloyed in a planetary-type ball mill. Hexane was added as a process control agent to reduce powder agglomeration during milling. The as-milled powders were characterized using X-ray diffraction, differential scanning calorimetry, scanning electron microscopy and transmission electron microscopy. During milling, the hexane is partially dissociated, with the free carbon and hydrogen incorporated within the TixAl1 − x alloy powders in increasing amounts with increasing milling time. The amount of incorporated carbon increases with the initial Ti content of the powder mixture, reaching a maximum of 12 wt.{\%} incorporated into an initial Ti0.8Al0.2 powder mixture after 100 h of milling. The hydrogen is found to combine with elemental Ti to form TiH2−x, with an initial Ti0.5Al0.5 powder mixture milled for 40 h incorporating 0.95 wt.{\%} H. The milled (TixAl1 − x + C) powder mixtures form a large fraction of amorphous phase near x = 0.5. Annealing of the as-milled powders incorporating dissolved carbon and hydrogen produced a mixture of Al2Ti4C2, TiC and TiAl.",
author = "Jari Keskinen and Andrew Pogany and James Rubin and Pekka Ruuskanen",
year = "1995",
doi = "10.1016/0921-5093(94)09701-1",
language = "English",
volume = "196",
pages = "205--211",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier",
number = "1-2",

}

Carbide and hydride formation during mechanical alloying of titanium and aluminium with hexane. / Keskinen, Jari; Pogany, Andrew; Rubin, James; Ruuskanen, Pekka.

In: Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, Vol. 196, No. 1-2, 1995, p. 205-211.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Carbide and hydride formation during mechanical alloying of titanium and aluminium with hexane

AU - Keskinen, Jari

AU - Pogany, Andrew

AU - Rubin, James

AU - Ruuskanen, Pekka

PY - 1995

Y1 - 1995

N2 - Mixtures of elemental titanium and aluminium powders of overall composition TixAl1+x (x = 0.02, 0.3, 0.4, 0.5, 0.6, 0.7, 0.75, 0.8) were mechanically alloyed in a planetary-type ball mill. Hexane was added as a process control agent to reduce powder agglomeration during milling. The as-milled powders were characterized using X-ray diffraction, differential scanning calorimetry, scanning electron microscopy and transmission electron microscopy. During milling, the hexane is partially dissociated, with the free carbon and hydrogen incorporated within the TixAl1 − x alloy powders in increasing amounts with increasing milling time. The amount of incorporated carbon increases with the initial Ti content of the powder mixture, reaching a maximum of 12 wt.% incorporated into an initial Ti0.8Al0.2 powder mixture after 100 h of milling. The hydrogen is found to combine with elemental Ti to form TiH2−x, with an initial Ti0.5Al0.5 powder mixture milled for 40 h incorporating 0.95 wt.% H. The milled (TixAl1 − x + C) powder mixtures form a large fraction of amorphous phase near x = 0.5. Annealing of the as-milled powders incorporating dissolved carbon and hydrogen produced a mixture of Al2Ti4C2, TiC and TiAl.

AB - Mixtures of elemental titanium and aluminium powders of overall composition TixAl1+x (x = 0.02, 0.3, 0.4, 0.5, 0.6, 0.7, 0.75, 0.8) were mechanically alloyed in a planetary-type ball mill. Hexane was added as a process control agent to reduce powder agglomeration during milling. The as-milled powders were characterized using X-ray diffraction, differential scanning calorimetry, scanning electron microscopy and transmission electron microscopy. During milling, the hexane is partially dissociated, with the free carbon and hydrogen incorporated within the TixAl1 − x alloy powders in increasing amounts with increasing milling time. The amount of incorporated carbon increases with the initial Ti content of the powder mixture, reaching a maximum of 12 wt.% incorporated into an initial Ti0.8Al0.2 powder mixture after 100 h of milling. The hydrogen is found to combine with elemental Ti to form TiH2−x, with an initial Ti0.5Al0.5 powder mixture milled for 40 h incorporating 0.95 wt.% H. The milled (TixAl1 − x + C) powder mixtures form a large fraction of amorphous phase near x = 0.5. Annealing of the as-milled powders incorporating dissolved carbon and hydrogen produced a mixture of Al2Ti4C2, TiC and TiAl.

U2 - 10.1016/0921-5093(94)09701-1

DO - 10.1016/0921-5093(94)09701-1

M3 - Article

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