Study and Investigation on the Effect of Presence of Interlayer on the Microstructure, Mechanical Properties and Fracture Mode of AISI 321 Stainless Steel Resistance SpotWelds

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MOSTAAN H.; SAFARI M.; SONBOLI A.; HADDADI M.; TAHERKHANI A.

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Journal: JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN Year:2018 | Volume:4 | Issue:1 Page(s): 101-112

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Title

Study and Investigation on the Effect of Presence of Interlayer on the Microstructure, Mechanical Properties and Fracture Mode of AISI 321 Stainless Steel Resistance SpotWelds

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Keywords

Resistance Spot Welding

AISI 321 Stainless Steel

Phase Transformations

Mechanical Properties

Fracture Mode

Abstract

In this paper, numerical and empirical investigations of the effect of AISI 347 stainless steel interlayer on the microstructure, Mechanical Properties and Fracture Mode of AISI 321 Stainless Steel resistance spot welds have been conducted. For this purpose, two types of joints, the first free from inter layer and the second contains interlayer with 0. 05 mm thickness as well as difference currents and times, were evaluated. In order to examine the Mechanical Properties including maximum force and tensile mode, tensile – shear test of the spot welds was done. The obtained results indicated that an increase in the welding time and current resulted in a change in Fracture Mode from interfacial to peripheral owing to an increase in fusion zone volume. The change in the chemical composition because of the presence of interlayer and an increase in cooling rate caused the formation of different phases as well as observation of the dispersed Martensite phase in fusion zone.

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APA: Copy

MOSTAAN, H., SAFARI, M., SONBOLI, A., HADDADI, M., & TAHERKHANI, A.. (2018). Study and Investigation on the Effect of Presence of Interlayer on the Microstructure, Mechanical Properties and Fracture Mode of AISI 321 Stainless Steel Resistance SpotWelds. JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN, 4(1 ), 101-112. SID. https://sid.ir/paper/269227/en

Vancouver: Copy

MOSTAAN H., SAFARI M., SONBOLI A., HADDADI M., TAHERKHANI A.. Study and Investigation on the Effect of Presence of Interlayer on the Microstructure, Mechanical Properties and Fracture Mode of AISI 321 Stainless Steel Resistance SpotWelds. JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN[Internet]. 2018;4(1 ):101-112. Available from: https://sid.ir/paper/269227/en

IEEE: Copy

H. MOSTAAN, M. SAFARI, A. SONBOLI, M. HADDADI, and A. TAHERKHANI, “Study and Investigation on the Effect of Presence of Interlayer on the Microstructure, Mechanical Properties and Fracture Mode of AISI 321 Stainless Steel Resistance SpotWelds,” JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN, vol. 4, no. 1 , pp. 101–112, 2018, [Online]. Available: https://sid.ir/paper/269227/en

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