The effect of alloy compositions on the joint strength of carbon steels welded by the extended hot-rolling process

Park, Jin Woo; Yang, Chan Woo; Kang, Young Hwa; Lee, Jong Sub

doi:10.1016/j.msea.2012.08.006

Cited by 4 publications

(2 citation statements)

References 13 publications

(20 reference statements)

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“…Surface scales dragged into the joints are shown in Fig. 3 ) can be identified on the faceted areas even inside the dimples [4]. Joint fracture behavior is initiated by the brittle fracture of scale inclusions and growth around the internal oxides [5].…”

Section: Microstructurementioning

confidence: 99%

Study of the Solid-State Joining Process for Endless Hot Rolling

Dai

Zhang

2014

AMM

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In this study, the joint strength and microstructure of carbon steels welded by an super-deformation joining process in air were investigated. The two block of model steels are overlapped and heated. The steels are welded with 1000% deformation at approximately 1000°C.The joint strengths are evaluated by uniaxial tension testing. The joint microstructures and fractured surfaces are investigated with OM and SEM. The results revealed that the mechanical properties of joint are close to the matrix’s, the grains adjacent to the interface are merged into one grain, which indicates that both blocks are soundly joined,fracture surface was covered with dimple indicating ductile fracture occurred. Joint fracture behavior is initiated by the brittle fracture of scale inclusions and growth around the internal oxides. Surface scale is the most important factor of sound joining.

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Section: Microstructurementioning

confidence: 99%

Study of the Solid-State Joining Process for Endless Hot Rolling

Dai

Zhang

2014

AMM

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“…Relevant papers and reports show that the company mainly studies the connection technology and equipment, and obtains the minimum temperature of effective connection of sheet metal is 980 °C and the thickness of blank is 29–120 mm. The effects of process parameters such as overlap (B), the tilt angle of the sheet (α) and pressure amount (L) and material parameters such as carbon content and oxide content on the interface closure of the joint in Figure 1 are analyzed [12,13,14]. The strength of the connection is proved.…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior of Q345 Steel and Its Application in Rapid Shear Connection

Zhang

et al. 2019

Materials

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The high-temperature deformation behavior of Q345 steel is detected by a Gleeble-3800 thermal simulator. The Arrhenius constitutive equation for high-temperature flow stress and the dynamic recrystallization model are constructed. With the secondary development technology, customized modifications are made on existing Deform-3D software. The constructed constitutive model and dynamic recrystallization model are embedded into Deform-3D to realize the secondary development of Deform-3D. The grain size and volume percentage distribution of dynamic recrystallization are obtained by simulating the shear connection process at high temperature and high speed. The results show that the constitutive equation and the dynamic recrystallization model constructed in this paper can be used to predict the evolution of the microstructure. The difference between the prediction results and the experimental data is about 3%. The accuracy of Arrhenius constitutive equation, dynamic recrystallization model and the feasibility of software secondary development are verified.

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