Welding technique of Al alloyed ODS steels

Abstract
This invention allows the joining of ODS steels for high temperature application. In particular the material MA956 and PM2000 were joined with itself and with 316L stainless steel using on site available techniques so an assembling of large devices is possible. The welds achieved strength of 85% of the original strength of the unwelded bulk material.

Application(s)
This technique can be used to join this new class of material in almost every location and shape as long as the heat treatment can be done afterwards and a good cover gas shielding can be guaranteed.

Advantages
A standard TIG welding machine that has the pulsed AC capability can now be used to join a previously unweldable material. This makes it possible to do on-site welds and complicated assembling of devices for high-temperature application.

IP Status: Available both Exclusively and Non Exclusively

Commercialization Strategy: Currently commercial partners are being sought to develop applications for this technology.

Reference Number: 703

S Number: DOE reference no.(s): 109,029

Patents & Applications:
Application(s) Pending

Posted: 02-14-2007

Contact
John Mott
Technology Transfer Division
Los Alamos National Laboratory
P.O. Box 1663, MailStop C334
(505) 665-0883
jmott@lanl.gov