Effect of Ti Addition on the Microstructure and Mechanical Properties of Weld Metals in HSLA Steels

Pouriamanesh, Rasoul; Dehghani, K.; Vallant, Rudolf; Enzinger, Norbert

doi:10.1007/s11665-018-3686-y

Cited by 23 publications

(5 citation statements)

References 33 publications

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“…With the help of the magnetic field and the electron wind, the small-grained carbides are distributed uniformly in the austenite crystal. Similar studies [43][44] suggested that the magnetic field can facilitate the dissolution of large carbon clusters in the matrix so that the intergranular agglomeration within the crystal turns into uniform distribution, which plays an active effect on the mechanical properties of the structure. In addition, the eddy current generated by pulse current and magnetic field can produce the Joule heating effect, which is another important reason for the increase of carbide precipitation.…”

Section: Precipitation Strengthening Effect Of Electromagnetic Couplingmentioning

confidence: 69%

Influence of Novel Electromagnetic Strengthening on Mechanical Properties of Spaceborne Elastic Components

Xiong

Xiao²,

Gao³

et al. 2023

J. Phys.: Conf. Ser.

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Numerous elastic components are widely used in the power drive, vibration control, and pressure compensation of deployable antennas. Thus, the deployment and normal service of the antenna rely on the consistency and stability of their mechanical properties. They offer important support for deployable antenna products to meet the requirements of shape and surface accuracy. This study found that the electromagnetic field can improve the stiffness, hardness, and stability of the space-borne spring. In this experiment, the hardness variance distribution is reduced by 40.79%, the creep resistance is improved by 45.76% to 61.48%, and fatigue life is increased by 69%. With the enhancement of mechanical properties, the uniformity, consistency, and individual differences of the spring are improved. According to the observations of metallographic microstructure, fine grain strengthening and precipitation strengthening mainly contribute to the reinforcing effect. It is found that the electromagnetic field has an important influence on improving the performance stability and consistency of the space-borne elastic element structure, and this technology has great prospects in the future aerospace field.

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Section: Precipitation Strengthening Effect Of Electromagnetic Couplingmentioning

confidence: 69%

Influence of Novel Electromagnetic Strengthening on Mechanical Properties of Spaceborne Elastic Components

Xiong

Xiao²,

Gao³

et al. 2023

J. Phys.: Conf. Ser.

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“…Most of the research has focused on developing welding fluxes and suitable welding procedures and processes [34][35][36]. It has been noticed from previous studies that the high-temperature wettability parameters have been estimated using maximum bubble pressure, pendant drop, and a sessile drop method [37,38].…”

Section: Introductionmentioning

confidence: 99%

Wettability study of Developed Silicon based SMAW Electrode Coating Fluxes using SiO 2 -CaO-TiO 2 and SiO 2 -CaO-MgO Ternary System

Mishra,

Sharma,

Chhibber

2023

Preprint

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The current research aims to develop and investigate the wettability behaviour of the fluxes used to coat shielded metal arc welding electrodes for offshore applications. Weld characteristics on duplex stainless steel are significantly affected by the flux's wettability characteristics. The wetting properties of SMAW electrode coatings were measured using the sessile drop technique. Twenty-six flux constituents of coatings have been formulated using the mixture design approach. At a temperature of 1423 K, the contact angle, spread area, surface tension, and adhesion work are measured. X-ray diffraction (XRD) analytical techniques and Fourier transform infrared spectroscopy (FTIR) analysis were employed to determine the phases present in various types of fluxes. The influence of electrode coating flux compositions on different wetting parameters was examined using statistical models. It was observed that CaO, SiO2, and TiO2 individually have an increasing impact on contact angle, whereas MgO has a decreasing effect. CaO.MgO, SiO2.MgO, and TiO2.MgO is the only binary constituent increasing the contact angle. CaO and TiO2 exhibit increasing impacts, whereas SiO2 and MgO have a decreasing impact on the spread area. CaO.SiO2, SiO.TiO2, SiO.MgO, and TiO2.MgO interactions have increasing effects, while other binary interactions show decreasing effects on the spread area. Individual constituents have a positive effect on surface tension. MgO is the only constituent that increases the work of adhesion, and other constituents decrease it. Interactions like CaO, SiO2, CaO, TiO2, and SiO2.TiO2 has an increasing impact on adhesion work, while other binary interactions show a negative effect. Utilizing an artificial neural network approach, the mean square error (MSE) and mean absolute percentage error (MAPE) values for the predicted outcome were effectively minimized. ANN model prediction was compared to regression prediction.

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“…of 150 ppm. However, this amount also depends on the content of other alloying elements because the AF formation is influenced simultaneously by the proper combination of alloying elements [4]. the amount of AF in Ti-B-N system is controlled by the balance between BN as an energetically favourable site for AF nucleation and soluble boron which acts as a hardenability element suppressing grain boundary ferrite formation [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pr6O11 on the Microstructures and Mechanical Properties of High-Strength Steel Weld Metal

Zhang¹,

Yu²,

Shi-liang³

et al. 2021

Preprint

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The effect of Pr6O11 on the microstructure and mechanical properties of high-strength steel weld metal was investigated by optical microscopy, scanning electron microscopy and mechanical testing. Three different contents of Pr6O11 were added to the flux-cored wires. The results demonstrate that the addition of 1% Pr6O11 can promote the refinement and spheroidization of inclusions, refine the grains, form acicular ferrites in the weld metal, and significantly improve the toughness. The addition of Pr6O11 promoted the formation of rare earth composite inclusions and acicular ferrites in the weld metal, refined the lath microstructure, inhibited the formation of martensite and bainite. The crack formation mode changed from the boundary cracking of the bainite clusters caused by the surface shear stress to the surface shear stress-induced decohesion of inclusion. Excessive addition of Pr6O11 will reduce the number of inclusion nucleation and deteriorate the mechanical properties. The wire No.2 with 1% Pr6O11 had the good comprehensive mechanical properties.

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Effect of Ti Addition on the Microstructure and Mechanical Properties of Weld Metals in HSLA Steels

Cited by 23 publications

References 33 publications

Influence of Novel Electromagnetic Strengthening on Mechanical Properties of Spaceborne Elastic Components

Influence of Novel Electromagnetic Strengthening on Mechanical Properties of Spaceborne Elastic Components

Wettability study of Developed Silicon based SMAW Electrode Coating Fluxes using SiO 2 -CaO-TiO 2 and SiO 2 -CaO-MgO Ternary System

Effect of Pr6O11 on the Microstructures and Mechanical Properties of High-Strength Steel Weld Metal

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