Controlling phase formation and stability to improve the high temperature creep resistance of austenitic stainless steels
Conference
·
OSTI ID:5002660
New Fe-14Cr-16Ni-2.5Mo-2Mn steels modified with carefully controlled additions of Ti, Nb, V, C, P and B have been developed which have outstanding creep rupture resistance at 700/degree/C and 170 MPa, much better than comparable commercial steels. The minor alloying element levels and combinations were chosen a priori to produce specific microstructures of fine MC and FeTiP precipitates in the matrix and coarser carbides (M/sub 23/C/sub 6/, M/sub 6/C and MC) along grain boundaries before creep properties were ever measured. The precipitates directly produce the creep resistance observed in the new steels. The ideas that guided these modifications to tailor and control the precipitate microstructure stem from years of studying precipitation in aged and reactor irradiated steels by the use of analytical electron microscopy (AEM). 14 refs., 5 figs., 1 tab.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5002660
- Report Number(s):
- CONF-8804112-5; ON: DE88011401
- Country of Publication:
- United States
- Language:
- English
Similar Records
Modified 14Cr-16Ni stainless steels with improved creep resistance at 700/sup 0/C due to tailored precipitate microstructures
Development of creep resistant austenitic stainless steels for advanced steam cycle superheater application. [Uses of radiation effects to guide alloy development]
Application of analytical electron microscopy to design of creep resistant advanced austenitic stainless steels
Conference
·
Tue Sep 01 00:00:00 EDT 1987
·
OSTI ID:6253577
Development of creep resistant austenitic stainless steels for advanced steam cycle superheater application. [Uses of radiation effects to guide alloy development]
Conference
·
Wed Dec 31 23:00:00 EST 1986
·
OSTI ID:6298672
Application of analytical electron microscopy to design of creep resistant advanced austenitic stainless steels
Conference
·
Wed Dec 31 23:00:00 EST 1986
·
OSTI ID:6230944
Related Subjects
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
BORON ADDITIONS
BORON ALLOYS
CARBON ADDITIONS
CREEP
CRYSTAL STRUCTURE
DATA
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
FABRICATION
FAILURES
FOSSIL-FUEL POWER PLANTS
HIGH TEMPERATURE
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
NUMERICAL DATA
PHOSPHORUS ADDITIONS
POWER PLANTS
RUPTURES
STEELS
TESTING
THERMAL POWER PLANTS
TITANIUM ADDITIONS
TITANIUM ALLOYS
VANADIUM ADDITIONS
VANADIUM ALLOYS
VERY HIGH PRESSURE
200104 -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
BORON ADDITIONS
BORON ALLOYS
CARBON ADDITIONS
CREEP
CRYSTAL STRUCTURE
DATA
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
FABRICATION
FAILURES
FOSSIL-FUEL POWER PLANTS
HIGH TEMPERATURE
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
NUMERICAL DATA
PHOSPHORUS ADDITIONS
POWER PLANTS
RUPTURES
STEELS
TESTING
THERMAL POWER PLANTS
TITANIUM ADDITIONS
TITANIUM ALLOYS
VANADIUM ADDITIONS
VANADIUM ALLOYS
VERY HIGH PRESSURE