Published March 1975 | Version v1
Journal article Metadata-only

Stainless steels for cryogenic bolts and nuts

Creators

  • 1. Societe Creusot-Loire, 75 - Paris (France)

Description

Stainless steel for cryogenic applications are generally austenitic steels which, under the effect of cold-drawing, can or cannot undergo a partial martensitic transformation according to their composition. It has been shown that very high ductility and endurance characteristics at low temperatures, together with very high yield strength and resistances values, can be attained with grades of nitrogenous steels of types Z2CN18-10N and Z3CMN18-8-6N. Optimum ductility values are obtained by employing to the best possible, the martensitic transformations which develop during cold-drawing. From the plotting of the rational traction curves, it is possible to analyse very simply the influence of the composition on the martensitic transformations

Abstract (French)

Les aciers inoxydables pour emplois cryogéniques sont généralement des aciers austénitiques qui, sous l'effet d'un écrouissage, peuvent subir ou non une transformation martensitique partielle suivant leur composition. On a montré que des caractéristiques de ductilité et d'endurance très élevées à basse température ainsi que des valeurs très hautes de limite d'élasticité et de résistance pouvaient être atteintes avec des nuances d'aciers à l'azote du type Z3 CN 19-10 Az et Z3 CMN 18-8-6 Az. Les valeurs optimales de ductilité sont obtenues en utilisant au mieux les transformations martensitiques qui apparaissent en cours d'écrouissage. Le tracé des courbes rationnelles de traction permet d'analyser très simplement l'influence de la composition sur les transformations martensitiques.

Additional details

Additional titles

Original title (French)
Aciers inoxydables pour visserie cryogenique

Identifiers

DOI
10.1051/mattech/197563030093;

Publishing Information

Journal Title
Matériaux & Techniques
Journal Volume
63
Journal Issue
3-4
Series
Mater. Tech.
Journal Page Range
93-113
ISSN
0032-6895

Conference

Title
1. Colloquium on bolting and metallurgy of iron.
Dates
17 Apr 1975.
Place
Lyon, France.

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
7221957
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CRYOGENICS; FASTENERS; MACHINING; MECHANICAL TESTS; STAINLESS STEEL-Z2CN18-10N; STAINLESS STEEL-Z3CMN18-8-6N; STAINLESS STEELS; STRAIN HARDENING; TENSILE PROPERTIES
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; CORROSION RESISTANT ALLOYS; HARDENING; IRON ALLOYS; IRON BASE ALLOYS; MANGANESE ADDITIONS; MANGANESE ALLOYS; MATERIALS TESTING; MECHANICAL PROPERTIES; NICKEL ALLOYS; NITROGEN ADDITIONS; SILICON ADDITIONS; STEELS; TESTING; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
Updated automatically by Metadata and Full-Text Enrichment Agent