Influence of Welding Techniques on Heat Affected Zone Softening of Dissimilar Metal Maraging Steel and High Strength Low Alloy Steel Gas Tungsten Arc Weldments

Joshi, Jaiteerth R.; Mastanaiah, P.; Kumar, Adepu; Gankidi, Madhusudhan Reddy; Katta, Ramesh Kumar

doi:10.1007/s12666-016-0861-4

Cited by 13 publications

(10 citation statements)

References 17 publications

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“…Low-alloy high-strength steel possesses excellent performance and remarkable economic benefits and is widely used in welded structures. To improve production efficiency and save cost, the welding structure design is developing in the direction of high parameters, such as lightweight and large scale [1][2][3][4][5]. Welding is a key technical problem affecting the application of low-alloy high-strength steel.…”

Section: Introductionmentioning

confidence: 99%

Effect of heat inputs on microstructure and mechanical properties in CGHAZ of BWELDY960Q steel

Qin¹,

Guo²,

Wang³

et al. 2021

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The Gleeble 1500 test machine was used to simulate the single-pass welding thermal cycle of BWELDY960Q steel under different heat input conditions. In this paper, microstructure observation and mechanical properties of BWELDY960Q steel specimens in coarse grain heat affected zone (CGHAZ) under different heat input conditions were investigated. The results show that under different heat input conditions, the microstructure of CGHAZ is lath martensite, granular bainite, or M-A constituent. As heat input increases, the number and size of the M-A constituent increase accordingly, and the microstructure gradually changes from lath martensite to granular bainite. Meanwhile, compared with the previous samples, the CGHAZ austenite grain diameter increases, and the grain size scale decreases. Furthermore, the value of the CGHAZ impact absorbing energy increases at first but then decreases, while microhardness monotonously decreases. At-20 • C compared with the base metal, the impact absorbing the energy of CGHAZ is significantly reduced, and embrittlement occurs. K e y w o r d s : BWELDY960Q steel, heat inputs, coarse grain heat affected zone, microstructure, mechanical properties

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Section: Introductionmentioning

confidence: 99%

Effect of heat inputs on microstructure and mechanical properties in CGHAZ of BWELDY960Q steel

Qin¹,

Guo²,

Wang³

et al. 2021

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“…Dissimilar welded joints have been extensively employed in industrial applications where different combination of mechanical, chemical, and physical properties are required. Several parts of machinery and devices used in pharmaceutical, petrochemical, food processing, and mining industries make use of dissimilar welded joints, where functional combinations of high tensile strength, representative techniques for obtaining dissimilar welding joints include buttering, using a third metal or a filler metal different to base metals, prefilling, among others [9][10][11]. Particularly, dissimilar austenitic/ferritic stainless steels welded joints due to the low susceptibility of stress corrosion cracking of AISI 430 and the high corrosion resistance and weldability of AISI 316L are a remarkable choice when these conditions are required [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Influence of Immersion Corrosion on Mechanical Properties of AISI 430/AISI 316L Dissimilar Welded Joints

Barrios

Burgos

Nuñez

et al. 2021

IJE

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“…High strength low alloy (HSLA) steel is widely used in pressure vessels, bridges, offshore platforms and other large-scale structures because of its high strength and good plasticity, toughness [1][2][3][4][5]. With the continuous emergence of new materials and processes, and the continuous improvement of manufacturing technology and molding technology, "energy saving, environmental protection and material reduction" has become the development goal of the machinery industry, especially the demand for light weight is becoming more and more urgent [6][7][8][9][10][11]. In construction machinery products, 50%…”

Section: Introductionmentioning

confidence: 99%

Study on Improvement of Welding Technology and Toughening Mechanism of Zr on Weld Metal of Q960 Steel

Liu

2020

Materials

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Q960 high-strength steel is widely used in pressure vessels, bridges, offshore platforms and other important steel structural components because of its high strength and good plastic toughness, but alloy elements added to this kind of steel have strong hardenability, especially after welding, so the strength and toughness cannot meet the requirements, which limits its application in a wider range. In this paper, from the point of view of the metallurgical treatment of the weld, the goal is to improve the strength and toughness of the Q960 high strength steel weld metal In order to analyze the influence of Zr on the welding process of Q960 steel and the strengthening and toughening effect of weld metal, this paper takes Fe-Mn-Mo-Cr-Ni as the main alloy system, BaF2-CaF2-Al-Mg as the basic slag system, and adopts the method of melting consumable electrode self-shielded for welding, and analyzes the welding process, microstructure, tensile property and impact toughness of the welded joint. The experimental results show that when the weld metal contains 0.0061% Zr, the minimum spatter rate is only 7%, the maximum slag removal rate is 95%, the maximum hardness is 357HV, the maximum elongation is 34%, and the impact toughness is the highest. At this time, the acicular ferrite content in the weld microstructure is the highest, and there is a certain amount of equiaxed fine-grained ferrite, and the content of proeutectoid ferrite is the least, which effectively improves the strength and toughness of the weld metal.

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Influence of Welding Techniques on Heat Affected Zone Softening of Dissimilar Metal Maraging Steel and High Strength Low Alloy Steel Gas Tungsten Arc Weldments

Cited by 13 publications

References 17 publications

Effect of heat inputs on microstructure and mechanical properties in CGHAZ of BWELDY960Q steel

Effect of heat inputs on microstructure and mechanical properties in CGHAZ of BWELDY960Q steel

Influence of Immersion Corrosion on Mechanical Properties of AISI 430/AISI 316L Dissimilar Welded Joints

Study on Improvement of Welding Technology and Toughening Mechanism of Zr on Weld Metal of Q960 Steel

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