Hot-workability tests have been conducted on an Fe-25Cr alloy which dynamically recovers during deformation. Four different oxide-inclusion distributions were introduced into the alloys, and initial grain sizes ranged from coarse cast structures to a fine wrought grain size. The material ductility was shown to decrease dramatically in the presence of air in the furnace atmosphere. For a constant volume fraction of oxide inclusions, the ductility in air, and in argon below 1000°C, decreases with an increase in both inclusion size and initial grain size.
Get full access to this article
View all access options for this article.
References
1.
COWARDM. D. et al Metals TechnoL, 1976, 3, 550.
2.
WHITEF. F.: Rev. Met., 1966, 63, 991.
3.
BOGGSW. A.: Symp. on ‘High temperature gas—metal reactions in mixed environments’, (ed.Jansson and Foroulis), 84; 1972, New York, AIME.
4.
STEGMANR. L. et al Trans. AIME, 1969, 245, 1759.
5.
GITTINSA. and SELLARSC. M.: Met. Sci. J., 1972, 6, 118.
6.
HANSENM. and ANDERKOK.: ‘Constitution of binary alloys’; 1958, London, McGraw-Hill.
7.
GLADMANT. et al ‘Effect of second-phase particles on the mech-anical properties of steel’, 68; 1971, London, The Iron and Steel Institute.