Plasma arc melting of a 80 wt % tantalum-20 wt % titanium alloy
Abstract
An alloy of 80wt% tantalum-20wt% titanium is being considered for use in an oxidizing and highly corrosive liquid metal application. The high melting point of the alloy, 2400 C, and other physical properties narrowed the possible melting techniques. Previous melting experience with these materials by electron beam resulted in extensive vaporization of the titanium during the melt and poor chemical homogeneity. A technique has been developed using plasma arc melting to melt refractory alloys with very dissimilar densities and vapor pressures. The 80Ta--20Ti alloy falls into this category with the density of tantalum 16.5 g/cc and that of titanium 4.5 g/cc. The melting of these materials is further complicated by the high melting point of tantalum( 3020 C) and the relatively low boiling point of titanium( 3287 C). The plasma arc melting technique described results in good chemical homogeneity with ingot size quantities of material.
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Lab., NM (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 10187106
- Report Number(s):
- LA-UR-94-3283; CONF-9410213-2
ON: DE95000846; TRN: 94:021011
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Conference
- Resource Relation:
- Conference: 1994 international conference on tungsten and refractory metals,McLean, VA (United States),17-19 Oct 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; TANTALUM BASE ALLOYS; FABRICATION; TENSILE PROPERTIES; TITANIUM ALLOYS; MELTING; CORROSION RESISTANCE; LIQUID METALS; 360101; PREPARATION AND FABRICATION
Citation Formats
Dunn, P S, and Patterson, R A. Plasma arc melting of a 80 wt % tantalum-20 wt % titanium alloy. United States: N. p., 1994.
Web.
Dunn, P S, & Patterson, R A. Plasma arc melting of a 80 wt % tantalum-20 wt % titanium alloy. United States.
Dunn, P S, and Patterson, R A. 1994.
"Plasma arc melting of a 80 wt % tantalum-20 wt % titanium alloy". United States. https://www.osti.gov/servlets/purl/10187106.
@article{osti_10187106,
title = {Plasma arc melting of a 80 wt % tantalum-20 wt % titanium alloy},
author = {Dunn, P S and Patterson, R A},
abstractNote = {An alloy of 80wt% tantalum-20wt% titanium is being considered for use in an oxidizing and highly corrosive liquid metal application. The high melting point of the alloy, 2400 C, and other physical properties narrowed the possible melting techniques. Previous melting experience with these materials by electron beam resulted in extensive vaporization of the titanium during the melt and poor chemical homogeneity. A technique has been developed using plasma arc melting to melt refractory alloys with very dissimilar densities and vapor pressures. The 80Ta--20Ti alloy falls into this category with the density of tantalum 16.5 g/cc and that of titanium 4.5 g/cc. The melting of these materials is further complicated by the high melting point of tantalum( 3020 C) and the relatively low boiling point of titanium( 3287 C). The plasma arc melting technique described results in good chemical homogeneity with ingot size quantities of material.},
doi = {},
url = {https://www.osti.gov/biblio/10187106},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Oct 01 00:00:00 EDT 1994},
month = {Sat Oct 01 00:00:00 EDT 1994}
}