Microstructure of 1Cr18Ni9Ti stainless steel by cryogenic compression deformation and annealing

This paper attempts to study the microstructures of 1Cr18Ni9Ti stainless steel subjected to compression deformation at liquid-nitrogen temperature and room temperature and subsequently annealing. The microstructure of 1Cr18Ni9Ti stainless steel subjected to compression deformation of 60% reduction a...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2005-10, Vol.407 (1), p.84-88
Main Authors: Wang, T.S., Peng, J.G., Gao, Y.W., Zhang, F.C., Jing, T.F.
Format: Article
Language:English
Subjects:
Annealing
Applied sciences
Cryogenic compression deformation
Elasticity. Plasticity
Exact sciences and technology
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Microstructrue
Stainless steel
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Summary:This paper attempts to study the microstructures of 1Cr18Ni9Ti stainless steel subjected to compression deformation at liquid-nitrogen temperature and room temperature and subsequently annealing. The microstructure of 1Cr18Ni9Ti stainless steel subjected to compression deformation of 60% reduction at liquid-nitrogen temperature composes of two phases, deformation-induced martensite and austenite, with morphology of nanoscale laths ranging 20–80 nm in width. For the sample of room-temperature compression deformation in 60% reduction, the microstructure composes of mainly austenitic deformation twin with the average thickness of about 200 nm and a few amount of deformation-induced martensite and stacking faults. Nearly nanograined microstructures can be obtained in the two deformed samples by annealing at 580 °C for 30 min. Deformation at liquid-nitrogen temperature for the steel can have a positive effect on developing high-angle boundaries.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2005.06.022