Ferrite Measurement in Austenitic and Duplex Stainless Steel Castings - Final Report
The ability to determine ferrite rapidly, accurately and directly on a finished casting, in the solution annealed condition, can enhance the acceptance, save on manufacturing costs and ultimately improve service performance of duplex stainless steel cast products. If the suitability of a non-destructive ferrite determination methodology can be demonstrated for standard industrial measurement instruments, the production of cast secondary standards for calibration of these instruments is a necessity. With these concepts in mind, a series of experiments were carried out to demonstrate, in a non-destructive manner, the proper methodology for determining ferrite content. The literature was reviewed, with regard to measurement techniques and vagaries, an industrial ferrite measurement round-robin was conducted, the effects of casting surface finish, preparation of the casting surface for accurate measurement and the evaluation of suitable means for the production of cast secondary standards for calibration were systematically investigated. The data obtained from this research program provide recommendations to ensure accurate, repeatable, and reproducible ferrite measurement and qualifies the Feritscope for field use on production castings.
- Research Organization:
- USDOE Idaho Operations Office, Idaho Falls, ID; The University of Tennessee, Knoxville, TN (US)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EE) (US)
- DOE Contract Number:
- FG07-99ID13734
- OSTI ID:
- 14577
- Report Number(s):
- DOE/ID/13734-1; TRN: AH200114%%318
- Resource Relation:
- Other Information: PBD: 1 Aug 1999
- Country of Publication:
- United States
- Language:
- English
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