SEDL / STP / STP672-EB / STP36882S

Microstructure and Related Material Characteristics of Some Duplex Austenitic-Ferritic Alloys with Less Than 40 Percent Ferrite

Bodine, GC
Manager of metals processing and senior research and product development engineer, Metallurgical and Materials Laboratory, Combustion Engineering, Inc., Chattanooga, Tenn.

Sump, CH
Manager of metals processing and senior research and product development engineer, Metallurgical and Materials Laboratory, Combustion Engineering, Inc., Chattanooga, Tenn.

Pages: 24    Published: Jan 1979

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Abstract

Duplex austenitic-ferritic stainless steel alloys with major composition variants were prepared as induction melted heats and were converted to tubing by centrifugal casting and cold pilger reduction. Ferrite content of the tubing ranged from 19 to 30 percent depending upon composition and heat treatment. The effects of composition and heat treatment variants on the characteristics of microstructure and related corrosion properties were determined.