Effect of heat input on microstructure and properties of dissimilar laser welded joints between TWIP and TRIP steels

Sun, Qianqian; Di, Hongshuang; Wang, Xiaonan; Chen, Xiaming; Nie, Xiao-Kang; Chen, Dongliang; Li, Jianping

doi:10.1051/metal/2019043

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…Recently, some scholars began to study the influence of welding thermal simulation on the microstructure and properties of Fe-Mn-Al-C low-density steels. Sun et al [20] used laser welding of Fe-Mn-Al-C steels to study the influence of heat input on the microstructure and properties of welded joints. When the heat input was greater than 60 J mm -2 , the weld depth and width increased and the penetration was complete.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure evolution and microhardness of thermal-simulated HAZ in Fe–Mn–Al–C steel

Mei

Wan

Zhang

et al. 2023

Materials Science and Technology

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The microstructure evolution and microhardness of Fe–Mn–Al–C steel heat-affected zone (HAZ) were investigated systematically using the weld thermal simulation technique. The results illustrated that the microstructure in HAZ with different peak temperatures (600, 800, 1000 and 1300°C) and heat inputs (10, 20 and 30 kJ cm–1) mainly consisted of ferrite and austenite. When the peak temperature was 1300°C, there are many high-angle grain boundaries which may inhibit crack propagation. With the increase in heat input, κappa carbide precipitation increased, the grain size became finer and microhardness increased. The microhardness was 438 HV when the peak temperature was 1300°C at 30 kJ cm–1. Highlights The welding of high carbon, high aluminium and low-density steel was simulated. The HAZ was composed of austenite and a small amount of high-temperature δ-ferrite. The proportion of high- and low-angle grain boundaries has a great influence on the mechanical properties. The welding heat input was 30 kJ cm–1, the grain size of the HAZ decreased and microhardness was the largest.

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Section: Introductionmentioning

confidence: 99%

“…Sun et al. [20] used laser welding of Fe–Mn–Al–C steels to study the influence of heat input on the microstructure and properties of welded joints. When the heat input was greater than 60 J mm –2 , the weld depth and width increased and the penetration was complete.…”

Section: Introductionmentioning

confidence: 99%

Microstructure evolution and microhardness of thermal-simulated HAZ in Fe–Mn–Al–C steel

Mei

Wan

Zhang

et al. 2023

Materials Science and Technology

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Integrity evolution during dissimilar welding of TWIP steel

dos Santos,

Colombo,

Rodrigo Rego

et al. 2023

Journal of Materials Research and Technology

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Microstructural Analysis and Mechanical Behaviour of Copper CDA 101/AISI-SAE 1010 Dissimilar Metal Welds Processed by Friction Stir Welding

Giridharan¹,

Sevvel²,

Stalin

et al. 2022

Mat. Res.

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In this work, low-carbon steel AISI-SAE grade 1010 with copper grade CDA 101 was joined by friction stir welding (FSW) using a tapered pin profiled tool. The rotational speed of the tool is 900 rpm, a traverse rate of 30 mm/min, and an axial force of 5 kN were used to produce the joints. The microstructural analysis and mechanical properties of the weld joints have been successfully examined. The optical microscopy, scanning electron microscopy, and X-ray diffraction (XRD) techniques were performed to examine the macropatterns and micropatterns of the welded joints. The tensile and hardness test was performed to evaluate the mechanical behaviours of the FSW joints. The fine ferrite grain features with uniform size were obtained in the microstructure of the nugget zone (stir zone). It is purely influenced by the alternating dynamic rearrangement (recrystallization) mechanism. High hardness was identified in the stir zone, even as the slightest stability was established in the heat-affected zone. The tensile investigation proposed that all the joints explored just lesser unbending nature than the parent material. The tensile strength of 181.5 MPa, the hardness of 144 VHN, and elongation of 14.03% were observed for the welded samples. The better properties for the weld joints were attained at 900 rpm spindle speed and tool traverse speed of 30 mm/min. The FSW is an attractive material joining process for both similar and dissimilar materials compared to other conventional types of joining processes, such as aerospace, marine engineering, shipbuilding, and industrial sector applications.

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Effect of heat input on microstructure and properties of dissimilar laser welded joints between TWIP and TRIP steels

Cited by 3 publications

References 18 publications

Microstructure evolution and microhardness of thermal-simulated HAZ in Fe–Mn–Al–C steel

Microstructure evolution and microhardness of thermal-simulated HAZ in Fe–Mn–Al–C steel

Integrity evolution during dissimilar welding of TWIP steel

Microstructural Analysis and Mechanical Behaviour of Copper CDA 101/AISI-SAE 1010 Dissimilar Metal Welds Processed by Friction Stir Welding

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