Effects of annealing temperature on microstructure, mechanical properties and corrosion resistance of 30% Cr super ferritic stainless steel

ABSTRACTFerritic stainless steels are widely used in transportation industry due to their exceptional performance regarding mechanical and corrosion properties. However, after a welding process, joints feature the sensitizing phenomenon because of the heat exchange from the torch affecting mechanical properties and corrosion resistance. This work describes the behavior firstly of mechanical properties of weld joints of ferritic stainless steel as base material without and with filler material (AISI 308L) by gas tungsten arc welding (GTAW). Operating parameters such as arc voltage, welding currrent, welding speed, feed speed, shielding gas flow were evaluated. Secondly, samples of weld joints were coated by flame spraying of composite particles in order to reduce the weight loss induced by corrosion in a salt spray (fog) apparatus. Changes induced from GTAW on the heat affected zone and Thermal Spraying on corrosion resistance, were monitored by optical and scanning electron microscopy, microhardness and longitudinal tensile testing. Results show that GTAW helps to control the size and the microstructure of heat affected zone improving simultaneously the mechanical properties. Meanwhile, welded joints covered by composite coatings feature a lower damage provided that the ceramic phase has been homogeneously dispersed.

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Effects of ATIG Welding on Weld Shape, Mechanical Properties, and Corrosion Resistance of 430 Ferritic Stainless Steel Alloy

Metals ◽

10.3390/met10030404 ◽

2020 ◽

Vol 10 (3) ◽

pp. 404 ◽

Cited By ~ 2

Author(s):

Kamel Touileb ◽

Abousoufiane Ouis ◽

Rachid Djoudjou ◽

Abdeljlil Chihaoui Hedhibi ◽

Hussein Alrobei ◽

...

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Corrosion Resistance ◽

Ferritic Stainless Steel ◽

Welding Process ◽

Tig Welding ◽

Inert Gas ◽

Steel Alloy ◽

Stainless Steel Alloy ◽

Mechanical Properties And Corrosion

Flux activated tungsten inert gas (ATIG) welding is a variant of tungsten inert gas (TIG) welding process with high production efficiency, high quality, low energy consumption, and low cost. The study of activating flux mechanism by increasing weld penetration has direct significance in developing flux and welding process. This study has been conducted on 430 ferritic stainless steel alloy. Design of experiment is used to get the best formulation of flux. Based on Minitab17 software, nineteen compositions of flux were prepared using the mixing method. Fluxes are combinations of three oxides (MoO3-TiO2-SiO2). Using the optimizer module available in Minitab 17 software, the best formulation was obtained to achieve the best weld depth. Hence, the obtained depth is twice greater than that achieved by conventional TIG welding. Moreover, mechanical properties and corrosion resistance have been investigated for TIG and ATIG welds respectively in tensile, impact, and hardness tests, and in potentiodynamic polarization measurement test.

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ATI 201 HP

Alloy Digest ◽

10.31399/asm.ad.ss1332 ◽

2021 ◽

Vol 70 (3) ◽

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Corrosion Resistance ◽

Austenitic Stainless Steel ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

Mechanical Properties And Corrosion ◽

Transportation Applications

Abstract ATI 201 HP is a 200-series, Cr-Mn-Ni austenitic stainless steel. It is comparable to the Cr-Ni stainless steel types 301, 304, and 304L in many respects, and can even provide some advantages over the 18-8 grades in certain applications. Because it possess a very desirable combination of economy plus good mechanical properties and corrosion resistance, it has been used in a wide variety of consumer and transportation applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1332. Producer or source: ATI.

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Mechanical properties and corrosion resistance of two-phase stainless steel with silicon

Metal Powder Report ◽

10.1016/s0026-0657(97)89737-8 ◽

1998 ◽

Vol 53 (1) ◽

pp. 36

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Corrosion Resistance ◽

Two Phase ◽

Mechanical Properties And Corrosion

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OUTOKUMPU MODA 430/4016

Alloy Digest ◽

10.31399/asm.ad.ss1340 ◽

2021 ◽

Vol 70 (10) ◽

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Corrosion Resistance ◽

Ferritic Stainless Steel ◽

Heat Treating ◽

Steel Grade ◽

Good Corrosion Resistance ◽

304 Austenitic Stainless Steel ◽

Corrosive Environments ◽

Type 304

Abstract OUTOKUMPU MODA 430/4016 is a 16% chromium ferritic stainless steel that combines good mechanical properties with good corrosion resistance and heat and oxidation resistance up to 815 °C (1500 °F). It is the most commonly used ferritic stainless steel grade and can be used to replace type 304 austenitic stainless steel in certain applications. It is best suited for mildly corrosive environments. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1340. Producer or source: Outokumpu Oyj.

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