STUDY ON FABRICATION, MICROSTRUCTURE AND PROPERTIES OF IN SITU TiC PARTICLE ON DISPERSION--STRENGTHENED 304 STAINLESS STEEL

304 stainless steel test block was fabricated by continuous melting wire with CMT and pulse mixed mode, and the path of additive manufacturing is layered slice S-shaped. The relationship between microstructure and properties of the specimen was investigated by microscope, SEM, EBSD, XRD, tensile, impact and electrochemical experiments. The results show that molding between weld and weld is very good, and the microstructure is mainly Austenite, Ferrite and a little of σ, and there are three kinds of Ferrite morphology: cellular, wormlike and lath. σ phase precipitates easily in regions with high ferrite content and is distributed at the boundary between austenite and ferrite. The specimen has good low temperature toughness. The microscopic fracture surface is mainly dimple, and the precipitates in the fracture surface are mainly fine carbide particles. The tensile strength of the additive manufacturing 304 specimen is higher than the forged specimen, and the type of fracture is ductile fracture. The electrochemical analysis of 304 stainless steel specimens and forgings shows that CMT and pulse arc additive manufacturing specimen has excellent corrosion resistance and its corrosion current is slightly lower than the forging.

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Microstructure and properties of transient liquid phase bonding of AM60 Mg alloy to 304 stainless steel with Zn interlayer

Journal of Materials Processing Technology ◽

10.1016/j.jmatprotec.2018.11.031 ◽

2019 ◽

Vol 266 ◽

pp. 558-568 ◽

Cited By ~ 3

Author(s):

Milad Mehrzad ◽

Alireza Sadeghi ◽

Mohammadreza Farahani

Keyword(s):

Stainless Steel ◽

Liquid Phase ◽

Transient Liquid Phase ◽

Mg Alloy ◽

304 Stainless Steel ◽

Transient Liquid Phase Bonding ◽

Microstructure And Properties

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Corrosion behavior of TiC particle-reinforced 304 stainless steel

Corrosion Science ◽

10.1016/j.corsci.2011.08.037 ◽

2011 ◽

Vol 53 (12) ◽

pp. 4258-4264 ◽

Cited By ~ 29

Author(s):

Qianlin Wu ◽

Wenge Li ◽

Ning Zhong

Keyword(s):

Stainless Steel ◽

Corrosion Behavior ◽

304 Stainless Steel ◽

Tic Particle

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Manganese Effect on Isothermal High Temperature Oxidation Behaviour of AISI 304 Stainless Steel

Materials Science Forum ◽

10.4028/www.scientific.net/msf.595-598.1127 ◽

2008 ◽

Vol 595-598 ◽

pp. 1127-1134 ◽

Cited By ~ 1

Author(s):

Frédéric Riffard ◽

Henri Buscail ◽

F. Rabaste ◽

Eric Caudron ◽

Régis Cueff ◽

...

Keyword(s):

Stainless Steel ◽

High Temperature ◽

Oxide Scale ◽

304 Stainless Steel ◽

Initial Growth ◽

Aisi 304 Stainless Steel ◽

Protective Oxide ◽

Temperature Oxidation ◽

Aisi 304

Chromia-forming steels are excellent candidates to resist to high temperature oxidizing atmospheres because they form protective oxide scales. The oxide scale growth mechanisms are studied by exposing AISI 304 stainless steel to high temperature conditions in air, and the analyses were carried out by means of thermogravimetry and in situ X-rays diffraction. The in situ XRD analyses carried out during high temperature AISI 304 steel oxidation in air reveals the accelerated growth of iron-containing oxides such as hematite Fe2O3 and iron-chromite FeCr2O4, when the initial germination of the oxide layer contains the presence of a manganese-containing spinel compound (1000°C). When the initial growth shows the only chromia formation (800°C), hematite formation appears differed in time. Protection against corrosion is thus increased when the initial germination of manganese-containing spinel oxide is inhibited in the oxide scale.

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