The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 1979
Filed:
Nov. 22, 1977
Jury Z Babaskin, Kiev, SU;
Viktor A Efimov, Kiev, SU;
Leonid A Sokirko, Kiev, SU;
Leonora A Rostovskaya, Kiev, SU;
Sergei Y Shipitsyn, Kiev, SU;
Georgy D Semenyaka, Kiev, SU;
Georgy G Lutsenko, Kiev, SU;
Other;
Abstract
A dopant material, comprising metallic elements constituting alloy base metals and endogeneous high-melting-point compounds selected from the group consisting of titanium, zirconium, tantalum, hafnium and thorium nitrides, carbides, carbonitrides, borides and oxides. The dopant material for iron- or nickel-base alloys is produced by melting a dopant base metal, whereupon the elements required for the formation of the high-melting-point compounds selected from the group consisting of titanium, zirconium, tantalum, hafnium, thorium nitrides, carbides, carbonitrides, borides and oxides, are taken in a stoichiometric ratio and introduced into the melt. These elements are introduced into the melt at a temperature exceeding that required for the formation therein of such compounds. After that the melt with the elements introduced therein is cooled at a rate of 10.sup.2 -10.sup.7 degrees per second until high-melting-point endogeneous dispersed compounds are formed in the solidified base metal. The present invention allows the production of the dopant materials which when used for modifying makes it possible to ensure an enhancement of a total range of properties, such as high-temperature strength, thermostability, crack resistance in casings and weldings, impact toughness, corrosion and erosion resistances in various aggressive media.