Application of analytical electron microscopy to design of creep resistant advanced austenitic stainless steels
Conference
·
OSTI ID:6230944
AEM has been used to study fine particles (<10 nm in diam) on extraction replicas using high brightness electron sources like the field emission gun (FEG). These studies allowed alloy compositional modifications to be selected that produced stable, fine precipitates for creep strength. The creep resistance of advanced modified 14Cr-16Ni austenitics is greatly improved relative to type 316, alloy 800H or 17-14 CuMo at 700/sup 0/C and a high stress of 170 MPa. AEM observations suggest that precipitates are primarily responsible for the improved creep strength.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6230944
- Report Number(s):
- CONF-870862-3; ON: DE87003456
- Country of Publication:
- United States
- Language:
- English
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