EFFECT OF HIGH TEMPERATURE SODIUM ON AUSTENITIC AND FERRITIC STEELS. Mechanical Properties of Materials. Topical Report No. 6. Effect of Carburization on the Phases in Austenitic Stainless Steel

Abstract NIROSTA 4318 is an austenitic stainless steel with good formability and with high mechanical properties due to the addition of nitrogen. The lower carbon content improves corrosion resistance when considering intergranular corrosion. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-883. Producer or source: ThyssenKrupp Nirosta GmbH.

High Temperature Performance of Cast CF8C-Plus Austenitic Stainless Steel

Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Education; Electric Power; Manufacturing Materials and Metallurgy ◽

10.1115/gt2010-23006 ◽

2010 ◽

Cited By ~ 1

Author(s):

Philip J. Maziasz ◽

Bruce A. Pint

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

High Temperature ◽

Austenitic Stainless Steel ◽

Gas Turbines ◽

National Laboratory ◽

Austenitic Stainless Steels ◽

Medium Size ◽

Temperature Oxidation ◽

Oak Ridge

Covers and casings of small to medium size gas turbines, can be made from cast austenitic stainless steels, including grades such as CF8C, CF3M, or CF10M. Oak Ridge National Laboratory (ORNL) and Caterpillar have developed a new cast austenitic stainless steel, CF8C-Plus, that is a fully-austenitic stainless steel, based on additions of Mn and N to the standard Nb-stabilized CF8C steel grade. The Mn addition improves castability, as well as increasing the alloy solubility for N, and both Mn and N act synergistically to boost mechanical properties. CF8C-Plus steel has outstanding creep-resistance at 600°–900°C, which compares well with Ni-based superalloys like alloys X, 625, 617 and 230. CF8C-Plus also has very good fatigue and thermal fatigue resistance. It is used in the as-cast condition, with no additional heat-treatments. While commercial success for CF8C-Plus has been mainly for diesel exhaust components, this steel can also be considered for gas-turbine and microturbine casings. The purpose of this paper is to demonstrate some of the mechanical properties and update the long-term creep-rupture data, and to present new data on the high-temperature oxidation behavior of these materials, particularly in the presence of water vapor.

Relationships between Fatigue Mechanical Properties and Roughness of Fatigue Fracture about 16MnR Steel after High Temperature

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.602-604.333 ◽

2012 ◽

Vol 602-604 ◽

pp. 333-336 ◽

Cited By ~ 1

Author(s):

An Zhong Liu ◽

Su Zhang

Keyword(s):

Mechanical Properties ◽

High Temperature ◽

Fatigue Fracture ◽

Fracture Roughness ◽

Metal Material ◽

Metal Fracture ◽

Mechanical Properties Of Materials ◽

Properties Of Materials

The microstructure of metal material would change with temperature, the roughness of the metal fracture would also vary. The mechanical properties of materials closely related to roughness of fracture. In this paper, after high temperature the crack strain fatigue fracture roughness and fatigue mechanical properties were analyzed for 16MnR steel. Further, relationships between roughness of fatigue fracture and temperature were also discussed.