scholarly journals Microstructure and mechanical properties of AISI 439 ferritic stainless steel welds without filler metal

2019 ◽  
Vol 29 ◽  
pp. 1-12
Author(s):  
Juan Manuel Salgado López ◽  
Marc Preud homme ◽  
Francisco Lopez Monroy ◽  
Jose Luis Ojeda Elizarráraz ◽  
Arturo Toscano Giles
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Tensile Test ◽  
Grain Growth ◽  
Ferritic Stainless Steel ◽  
Filler Metal ◽  
Testing Machine ◽  
Thin Plates ◽  
Technical Literature ◽  
Steel Welds

In literature, it has been reported that a current intensity lower than 120 A leads to a microstructure without grain growth in the heat affected zone (HAZ) of ferritic stainless steel welds. Nevertheless, in technical literature there is little information about the reduction in mechanical properties of ferritic stainless steel welds without filler metal due to grain growth in the HAZ. In this work, thin plates of ferritic stainless 439 steel were welded using pulse current gas tungsten arc welding (P-GTAW) without filler metal. The microstructures in the HAZ were analyzed and the mechanical properties on the welded joint were found by tensile test. This was carried out by cutting samples for the tensile test from the weldments and then tested in a universal testing machine. The fracture surface were observed using scanning electron microscope.

Microstructure and Mechanical Properties of Brazed Joints Used in Electronic Devices

2014 ◽  
Vol 936 ◽  
pp. 1671-1675
Author(s):  
Xue Rui Wu ◽  
Wen Qing Qu ◽  
Hai Tao Li
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Grain Boundary ◽  
Tensile Test ◽  
Filler Metal ◽  
Electronic Devices ◽  
Nickel Content ◽  
Microstructure And Mechanical Properties ◽  
Brazed Joints ◽  
Content Alloy

The microstructure and mechanical properties of brazed joints of oxygen-free copper and oxygen-free copper, nickel-plated kovar, monel, nickel-plated stainless steel were respectively studied by using AgCu28 and AuCu20 filler metal. Effects of different filler metal on microstructure of the brazed joints were analyzed through metallurgical microscope, SEM, EPMA. The brazed joints tensile strengths were analyzed through tensile test. The results indicate that the brazing process of oxygen-free copper and nickel content alloy used AgCu28 filler metal, nickel element is easy to diffused into AgCu28, AgCu28 filler metal with nickel element wetting spreadability along grain boundary of the oxygen - free copper, resulting in the penetration of the grain boundary of the oxygen-free copper. The joints brazed by AuCu20 filler metal have the better performance than the joints brazed by AgCu28 filler metal.

Microstructure and Mechanical Properties of Silicon Carbide-Treated Ferritic Stainless Steel Welds

2021 ◽  
pp. 395-411
Author(s):  
Muhammed O. H. Amuda ◽  
Taiwo Folorunsho Lawal ◽  
Shahjahan Mridha
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Grain Morphology ◽  
Grain Structure ◽  
Weld Geometry ◽  
Powder Addition ◽  
Steel Welds ◽  
Equiaxed Grain

To further previous works on grain refinement in ferritic stainless steel (FSS) welds via elemental powder addition, microstructure evolution and mechanical properties in non-metallic carbide treated FSS weld is discussed. Silicon carbide (SiC) powder preplaced on medium chromium FSS bevelled joint was fusion melted using tungsten inert gas (TIG) torch at different combination of process parameters. The incorporation of the powder in the weld pool constricted the weld geometry in addition to grain modification from columnar to equiaxed grain structure. Whilst significant improvement was obtained in hardness characteristics in powder treated welds, those of ductility and tensile strength were marginal. The study also established that welds mechanical properties are controlled by a combination of phenomena such as phase fraction and grain morphology.

scholarly journals Modeling Mechanical Properties of 21-Cr Ferritic Stainless Steel with Variation of Stress Ratio

2014 ◽  
Vol 81 ◽  
pp. 2439-2444
Author(s):  
Hanyong Jung ◽  
Yangjin Chung ◽  
Myoung-gyu Lee ◽  
Kichul Park ◽  
Jaebok Nam
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Stress Ratio

OUTOKUMPU MODA 430/4016

Alloy Digest ◽  
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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