Evaluation of dissimilar joint properties of AISI316 to AISI430 stainless steels produced by GTAW

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RASOULI I.; RAFIEI M.

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Paper Information

Journal: JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN Year:2019 | Volume:4 | Issue:2 Page(s): 111-126

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Title

Evaluation of dissimilar joint properties of AISI316 to AISI430 stainless steels produced by GTAW

Author(s)

RASOULI I. | RAFIEI M. | Issue Writer Certificate

Keywords

Dissimilar joint

AISI316 steel

AISI430 steel

Mechanical properties

Microstructure

Weld metal

Abstract

In this research, Microstructure and Mechanical properties of AISI316 to AISI430 Dissimilar joint were investigated. For this purpose, GTAW process using ER316L and ER2209 filler metals with diameter of 2. 4 mm was used. The Microstructure and fracture surface of the welded samples were characterized by optical microscopy and scanning electron microscopy. Also the Mechanical properties of the welded samples were evaluated by tension, impact and microhardness tests. It was found that the Microstructure of the welded sample with ER316L filler metal contained widmanstatten austenite with inter-dendritic and lathy ferrite. Also, in the welded sample with ER2209 filler metal, Austenite phase in ferrite matrix was seen. In tension test, all samples were fractured from AISI430 side of the joint in a ductile manner. ER2209 Weld metal indicated low impact energy about 27 J, while ER316L Weld metal indicated higher impact energy about 43 J. The surface fracture in both welded samples indicated brittle fracture mode. The microhardness of the Weld metal of the welded sample with ER316L filler metal was higher than the welded sample with ER2209 filler metal due to the presence of alloying elements, proper distribution of delta ferrite and finer Microstructure.

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APA: Copy

RASOULI, I., & RAFIEI, M.. (2019). Evaluation of dissimilar joint properties of AISI316 to AISI430 stainless steels produced by GTAW. JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN, 4(2 ), 111-126. SID. https://sid.ir/paper/269209/en

Vancouver: Copy

RASOULI I., RAFIEI M.. Evaluation of dissimilar joint properties of AISI316 to AISI430 stainless steels produced by GTAW. JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN[Internet]. 2019;4(2 ):111-126. Available from: https://sid.ir/paper/269209/en

IEEE: Copy

I. RASOULI, and M. RAFIEI, “Evaluation of dissimilar joint properties of AISI316 to AISI430 stainless steels produced by GTAW,” JOURNAL OF WELDING SCIENCE AND TECHNOLOGY OF IRAN, vol. 4, no. 2 , pp. 111–126, 2019, [Online]. Available: https://sid.ir/paper/269209/en

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