EFFECTS OF ARC HEAT INPUT AND WELDING SPEED ON THE CRYOGENIC IMPACT STRENGTH OF TYPE 304L AUSTENITIC STAINLESS STEEL WELD METAL

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KARIMI MANESH MAHDI; SATTARIFAR IRAJ; OMIDVAR HAMID

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:2 Page(s): 205-213

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Title

EFFECTS OF ARC HEAT INPUT AND WELDING SPEED ON THE CRYOGENIC IMPACT STRENGTH OF TYPE 304L AUSTENITIC STAINLESS STEEL WELD METAL

Author(s)

KARIMI MANESH MAHDI | SATTARIFAR IRAJ | OMIDVAR HAMID | Issue Writer Certificate

Keywords

ARC HEAT INPUTQ2

WELDING SPEEDQ2

CRYOGENIC IMPACT STRENGTHQ2

AUSTENITIC STAINLESS STEELQ2

GAS TUNGSTEN ARC WELDINQ2

Abstract

Usage in low temperatures causes embrittlement of many structures; consequently, selection of welding parameters for maintaining the toughness of welded structures is crucial. In this paper, effects of ARC HEAT INPUT and WELDING SPEED on the CRYOGENIC IMPACT STRENGTH of type 304L AUSTENITIC STAINLESS STEEL weld metal are investigated. For this purpose, 304L AUSTENITIC STAINLESS STEEL sheet with 5 mm thickness was welded with GAS TUNGSTEN ARC WELDINg process and by changing the parameters of ARC HEAT INPUT and WELDING SPEED, the effect of these parameters on the microstructure, weld metal ferrite content and low temperature, charpy impact energy of samples was determined. The ARC HEAT INPUT range applied was between 1.04 and 3.23 kW, and the WELDING SPEED varied between 30 and 240 mm/min. It was found that increasing ARC HEAT INPUT can reduce weld metal ferrite content, which improves low temperature impact strength, but on the other hand, slow cooling due to increasing heat input results in coarser dendritic structures in the weld metal, and can adversely affect impact strength. Changes of WELDING SPEED can also affect the amount of ferrite and microstructure and thus have an influence on the impact strength. Finally, having carried out the numerous tests, optimum impact properties at low temperature were obtained at 1.67 kW ARC HEAT INPUT and 120 mm/min WELDING SPEED.

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APA: Copy

KARIMI MANESH, MAHDI, SATTARIFAR, IRAJ, & OMIDVAR, HAMID. (2015). EFFECTS OF ARC HEAT INPUT AND WELDING SPEED ON THE CRYOGENIC IMPACT STRENGTH OF TYPE 304L AUSTENITIC STAINLESS STEEL WELD METAL. MODARES MECHANICAL ENGINEERING, 15(2), 205-213. SID. https://sid.ir/paper/179746/en

Vancouver: Copy

KARIMI MANESH MAHDI, SATTARIFAR IRAJ, OMIDVAR HAMID. EFFECTS OF ARC HEAT INPUT AND WELDING SPEED ON THE CRYOGENIC IMPACT STRENGTH OF TYPE 304L AUSTENITIC STAINLESS STEEL WELD METAL. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(2):205-213. Available from: https://sid.ir/paper/179746/en

IEEE: Copy

MAHDI KARIMI MANESH, IRAJ SATTARIFAR, and HAMID OMIDVAR, “EFFECTS OF ARC HEAT INPUT AND WELDING SPEED ON THE CRYOGENIC IMPACT STRENGTH OF TYPE 304L AUSTENITIC STAINLESS STEEL WELD METAL,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 2, pp. 205–213, 2015, [Online]. Available: https://sid.ir/paper/179746/en

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