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Title: Hot explosive compaction of Mo-Ti alloys

Abstract

The hot explosive compaction (HEC) technique developed for tungsten-titanium (W-Ti) alloys has been applied to molybdenum-titanium (Mo-Ti) alloys as well. The Mo + Ti powders were mixed and surrounded by an exothermic Ti + C mixture. The TiC reaction, when ignited, released a large amount of heat via a self-propagating high-temperature synthesis (SHS) reaction. Heat from the SHS reaction diffused into the Mo + Ti powder bed, causing the interior temperature to rise above 1,500 C. When the powder bed became isothermal, it was consolidated to high density by pressure waves generated by the detonation of an explosive. The amount of explosive charge and the molar ratio of exothermic mixture to sample were adjusted to produce full-density Mo-Ti alloy billets. The billets were sectioned and examined with scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction analysis (XRD), and microhardness measurements. In the context of the original fabrication process, the evolution of the resultant microstructure of the Mo-Ti product is described.

Authors:
 [1]
  1. Army Research Lab., Aberdeen Proving Ground, MD (United States)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
684465
Resource Type:
Journal Article
Journal Name:
Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
Additional Journal Information:
Journal Volume: 30; Journal Issue: 9; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MICROSTRUCTURE; MICROHARDNESS; EXPLOSIVE FORMING; MOLYBDENUM ALLOYS; TITANIUM ALLOYS; POWDERS; REACTION HEAT; TITANIUM CARBIDES; X-RAY DIFFRACTION; MICROSCOPY

Citation Formats

Kecskes, L.J. Hot explosive compaction of Mo-Ti alloys. United States: N. p., 1999. Web. doi:10.1007/s11661-999-0257-8.
Kecskes, L.J. Hot explosive compaction of Mo-Ti alloys. United States. doi:10.1007/s11661-999-0257-8.
Kecskes, L.J. Wed . "Hot explosive compaction of Mo-Ti alloys". United States. doi:10.1007/s11661-999-0257-8.
@article{osti_684465,
title = {Hot explosive compaction of Mo-Ti alloys},
author = {Kecskes, L.J.},
abstractNote = {The hot explosive compaction (HEC) technique developed for tungsten-titanium (W-Ti) alloys has been applied to molybdenum-titanium (Mo-Ti) alloys as well. The Mo + Ti powders were mixed and surrounded by an exothermic Ti + C mixture. The TiC reaction, when ignited, released a large amount of heat via a self-propagating high-temperature synthesis (SHS) reaction. Heat from the SHS reaction diffused into the Mo + Ti powder bed, causing the interior temperature to rise above 1,500 C. When the powder bed became isothermal, it was consolidated to high density by pressure waves generated by the detonation of an explosive. The amount of explosive charge and the molar ratio of exothermic mixture to sample were adjusted to produce full-density Mo-Ti alloy billets. The billets were sectioned and examined with scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction analysis (XRD), and microhardness measurements. In the context of the original fabrication process, the evolution of the resultant microstructure of the Mo-Ti product is described.},
doi = {10.1007/s11661-999-0257-8},
journal = {Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science},
number = 9,
volume = 30,
place = {United States},
year = {1999},
month = {9}
}