Extrusion-formed uranium-2.4 wt. % article with decreased linear

Details Extrusion-formed uranium-2.4 wt. % article with decreased linear Extrusion-formed uranium-2.4 wt. % article with decreased linear

1982-05-24

1982-11-30

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

751227, 148 115R, 148132, 148401, C22F 118, C22C 4300

Patent

active

043614477

ABSTRACT:
The present invention is directed to the fabrication of an article of uranium-2.4 wt. % niobium alloy in which the linear thermal expansion in the direction transverse to the extrusion direction is less than about 0.98% between 22.degree. C. and 600.degree. C. which corresponds to a value greater than the 1.04% provided by previous extrusion operations over the same temperature range. The article with the improved thermal expansion possesses a yield strength at 0.2% offset of at least 400 MPa, an ultimate tensile strength of 1050 MPa, a compressive yield strength of at least 0.2% offset of at least 675 MPa, and an elongation of at least 25% over 25.4 mm/sec. To provide this article with the improved thermal expansion, the uranium alloy billet is heated to 630.degree. C. and extruded in the alpha phase through a die with a reduction ratio of at least 8.4:1 at a ram speed no greater than 6.8 mm/sec. These critical extrusion parameters provide the article with the desired decrease in the linear thermal expansion while maintaining the selected mechanical properties without encountering crystal disruption in the article.

REFERENCES:
patent: 2914433 (1982-07-01), McGeary et al.
patent: 3072475 (1982-07-01), Baker et al.
patent: 3098807 (1982-07-01), Lewis
Jetter et al., "Preferred Orientation in Extruded Uranium Rod", Transactions of AIME, Journal of Metals, Feb. 1957, p. 291.

Affiliated with

Also associated with

Rating

Extrusion-formed uranium-2.4 wt. % article with decreased linear does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extrusion-formed uranium-2.4 wt. % article with decreased linear, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion-formed uranium-2.4 wt. % article with decreased linear will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-194704