| Abstract: | This article reports the results of a study to determine the effects of austenite stability, with respect to the strain-induced
transformation to martensite, on the formability of 300 series stainless steels. The effects were evaluated as a function
of alloy content, deformation temperature, and deformation rate. Three stainless-steel alloys with different nickel contents
were evaluated as commercially cold-rolled and annealed sheet products. Tensile tests were performed at temperatures between
−60°C and +125°C and at strain rates from 0.00167 s−1 to 0.167 s−1. The combined effects of strain, strain state, deformation-induced temperature changes, and strain rate are considered to
explain the interrelationships between martensite formation and limit strains as observed in forming-limit diagrams.
S.F. Peterson earned his M.S. in metallurgical and materials engineering from the Colorado School of Mines in 1997. He is currently an
engineer at Case Corporation.
M.C. Mataya earned his Ph.D. in metallurgy and materials science from Marquette University in 1976. He is currently an engineer at the
Rocky Flats Technology Site.
D.K. Matlock earned his Ph.D. in materials science and engineering from Stanford University in 1972. He is currently a professor at the
Colorado School of Mines. Dr. Matlock is also a member of TMS. |
