The weldability of consolidated rapidly solidified Type 304 SS powders
The joining requirements of rapidly solidified materials were evaluated. Type 304 stainless steel produced by centrifugal atomization and consolidated by hot extrusion was the primary material tested; vacuum gas atomized Type 304 SS materials and other consolidation methods, inluding HIP and dynamic (explosive) consolidation, were also examined. Several welding processes were evaluated, including gas tungsten arc, electron beam, friction, capacitor discharge, and explosive welding. Heat-affected zone grain growth was suppressed. Residual helium in the centrifugally atomized material was found to form moderate to severe porosity in all fusion welding processes; porosity appeared to be suppressed in friction and explosive welding. High energy density fusion welding processes (electron beam and capacitor discharge) were thermally modeled, and solidification was found to occur at cooling rates far exceeding those of the original powder material and to produce correspondingly fine microstrucures. 10 refs., 9 figs., 2 tabs.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 5452407
- Report Number(s):
- EGG-M-27487; CONF-880358-3; ON: DE88006738
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dynamic consolidation of rapidly solidified Type 304 SS powders
Weldability of rapidly solidified Type 304 stainless steel
Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ARC WELDING
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COMPARATIVE EVALUATIONS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
ELECTRON BEAM WELDING
ELEMENTS
EXPLOSION WELDING
EXPLOSIVE FORMING
FABRICATION
FLUIDS
FRICTION WELDING
GAS TUNGSTEN-ARC WELDING
GASES
GRAIN GROWTH
HEAT AFFECTED ZONE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HELIUM
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MATERIALS
MATERIALS WORKING
MICROSTRUCTURE
NICKEL ALLOYS
NONMETALS
PHASE TRANSFORMATIONS
POROSITY
POWDERS
RARE GASES
SOLIDIFICATION
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
WELDABILITY
WELDING
ZONES