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http://dx.doi.org/10.3740/MRSK.2007.17.1.037

An Extremely Low Temperature Properties of Austenite Stainless Steels  

Jung, Chan-Hoi (Dept. of Advanced Materials Engineering, Donga University)
Kim, Soon-Kook (Dept. of Advanced Materials Engineering, Donga University)
Lee, Jun-Hee (Dept. of Advanced Materials Engineering, Donga University)
Jeong, Se-Jin (NK Co., LTD.)
Kim, Ik-Soo (NK Co., LTD.)
Publication Information
Korean Journal of Materials Research / v.17, no.1, 2007 , pp. 37-42 More about this Journal
Abstract
The effects of immersion time in the liquid nitrogen and deformation-induced martensitic transformation on the behavior of austenite stainless steels used for the hydrogen storage tank of auto-mobile at cryogenic temperature were investigated. With increasing of immersion time in the liquid nitrogen, the tensile strength of all austenite stainless steels at cryogenic temperature was increased because the martensite transformation of unstable austenite. The restraint of crack generation ana transmission also increased the tensile strength by the active ${\alpha} transformation. The elongation decreasing of 321 steel is not the mechanical deformation of austenite phase but the stress induced martensite phase during the tensile test.
Keywords
An extremely low temperature; Austenite stainless steel; mechanical property;
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Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 1
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