Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Creep behavior of consolidated rapidly solidified Type 304 stainless steel powder containing helium

Conference ·
OSTI ID:5614653
; ;

An investigation on the creep behavior of extrusion consolidated Type 304 SS powder containing approximately 7 appM helium was performed. The helium was entrapped during powder processing by centrifugal atomization (CA) and retained through consolidation. In comparison with a wrought ingot metallurgy (I/M) reference of Type 304 SS, the CA SS extruded powder material showed considerable creep resistance with nearly a factor of 30 extension in rupture time and a two order in magnitude decrease in minimum creep rate observed. No obvious embrittlement influences from the helium were observed. Preconditioning heat treatments on the CA 304 SS extruded powders influenced the creep properties. A 900/sup 0/C-1 h heat treatment resulted in higher ductilities, shorter rupture times, and higher minimum creep rates compared to specimens heat treated for 1 h at 1200/sup 0/C. The fracture patterns were also significantly different where highly elongated grains and grain boundary cavitation were observed for the 900/sup 0/C heat treated specimens whereas the 1200/sup 0/C heat treated specimens display wedge cracking and very little grain elongation. 19 refs., 8 figs., 2 tabs.

Research Organization:
EG and G Idaho, Inc., Idaho Falls (USA)
DOE Contract Number:
AC07-76ID01570
OSTI ID:
5614653
Report Number(s):
EGG-M-05687; CONF-8710110-1; ON: DE88005536
Country of Publication:
United States
Language:
English

Similar Records

Tensile properties of extrusion consolidated Type 304 SS rapidly solidified powders
Conference · Tue Dec 31 23:00:00 EST 1985 · OSTI ID:5906327
Influence of consolidation method on structure/properties of rapidly solidified Type 304 SS powders
Conference · Thu Dec 31 23:00:00 EST 1987 · OSTI ID:5485891
Grain growth behavior of extrusion consolidated centrifugally atomized Type 304 stainless steel powder
Technical Report · Sat Oct 31 23:00:00 EST 1987 · OSTI ID:5419537

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CREEP
DOPED MATERIALS
ELEMENTS
EXTRUSION
FABRICATION
FAILURES
FLUIDS
FRACTURES
GASES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
HELIUM
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
NICKEL ALLOYS
NONMETALS
POWDERS
RARE GASES
STAINLESS STEEL-304
STAINLESS STEELS
STEELS