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The Mechanical and material properties of 316LN austenitic stainless steel for the fusion application in cryogenic temperatures

Sas, J.; Weiss, K.-P.; Jung, A.

Abstract (englisch):
Due to the constant increase of claims for all materials used in superconducting magnets in "magnetic fusion reactors", the article deals with the possibilities of increasing the mechanical properties of austenitic stainless steel tested at cryogenic conditions that ensure the transport of Helium to magnets. The aim of the experimental plan was to increase the mechanical properties of the steel grade 316LN tested at 4.2K from the original value Steel A: YS = 1045 MPa, UTS = 1528 MPa, A = 33% to the value of YS = 1204 MPa,UTS = 1642 MPa, A = 34% and Steel B: YS = 1173 MPa, UTS = 1541 MPa, A = 28% to the value of YS = 1351 MPa, UTS = 1645 MPa, A = 17%. The increase in mechanical properties of the steel grade under examination has been made by means of heat processing in the conditions of annealing: Th1 = 625 ° C / th1 = 696 h. The mechanical properties of steel were evaluated using static tension tests at 4,2 K. The samples were placed in a cryostat filled with liquid helium. Except for the mechanical properties, there were also evaluated structural changes depending on the conditions of heat processing by light optical microscopy and EBSD (Electron Backscatter Diffraction). ... mehr

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Volltext §
DOI: 10.5445/IR/1000054070
DOI: 10.1088/1757-899X/102/1/012003
Zitationen: 3
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 1757-8981
KITopen-ID: 1000054070
HGF-Programm 31.03.04 (POF III, LK 01)
Erschienen in IOP Conference Series: Materials Science and Engineering
Band 102
Seiten 012003
Nachgewiesen in Scopus
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