Microstructure and mechanical properties of dissimilar inertia friction welded 316L stainless steel to A516 ferritic steel for potential applications in nuclear reactors

Amborish Banerjee; Michail Ntovas; Laurie Da Silva; Salah Rahimi

doi:10.1016/j.mfglet.2022.07.002

Microstructure and mechanical properties of dissimilar inertia friction welded 316L stainless steel to A516 ferritic steel for potential applications in nuclear reactors

Amborish Banerjee, Michail Ntovas, Laurie Da Silva, Salah Rahimi

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Abstract

Defect-free welds between A-516 ferritic and 316L austenitic stainless steel were achieved using inertia friction welding (IFW) under varying friction and forge pressures. The microstructural evolution and the associated mechanical properties were characterised across different weld regimes. The welds were free from microcracks and demonstrated higher strength and hardness than the parent metal (PM), indicating enhanced properties. Carbide precipitates were not observed at the weld interface, implying no occurrence of sensitisation in the stainless steel. The presence of refined grains coupled with low grain orientation spread (GOS) values was the indication of continuous dynamic recrystallisation (CDRX) occurring during IFW.

Original language	English
Pages (from-to)	33-37
Number of pages	5
Journal	Manufacturing Letters
Volume	33
Early online date	12 Jul 2022
DOIs	https://doi.org/10.1016/j.mfglet.2022.07.002
Publication status	Published - 31 Aug 2022

Keywords

friction welding
bond interface
mechanical properties
dynamic recrystallisation
microstructure

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10.1016/j.mfglet.2022.07.002Licence: CC BY 4.0

Banerjee-etal-ML-2022-Microstructure-and-mechanical-properties-of-dissimilar-inertiaFinal published version, 4.25 MBLicence: CC BY 4.0

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title = "Microstructure and mechanical properties of dissimilar inertia friction welded 316L stainless steel to A516 ferritic steel for potential applications in nuclear reactors",

abstract = "Defect-free welds between A-516 ferritic and 316L austenitic stainless steel were achieved using inertia friction welding (IFW) under varying friction and forge pressures. The microstructural evolution and the associated mechanical properties were characterised across different weld regimes. The welds were free from microcracks and demonstrated higher strength and hardness than the parent metal (PM), indicating enhanced properties. Carbide precipitates were not observed at the weld interface, implying no occurrence of sensitisation in the stainless steel. The presence of refined grains coupled with low grain orientation spread (GOS) values was the indication of continuous dynamic recrystallisation (CDRX) occurring during IFW.",

keywords = "friction welding, bond interface, mechanical properties, dynamic recrystallisation, microstructure",

author = "Amborish Banerjee and Michail Ntovas and {Da Silva}, Laurie and Salah Rahimi",

year = "2022",

month = aug,

day = "31",

doi = "10.1016/j.mfglet.2022.07.002",

language = "English",

volume = "33",

pages = "33--37",

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TY - JOUR

T1 - Microstructure and mechanical properties of dissimilar inertia friction welded 316L stainless steel to A516 ferritic steel for potential applications in nuclear reactors

AU - Banerjee, Amborish

AU - Ntovas, Michail

AU - Da Silva, Laurie

AU - Rahimi, Salah

PY - 2022/8/31

Y1 - 2022/8/31

N2 - Defect-free welds between A-516 ferritic and 316L austenitic stainless steel were achieved using inertia friction welding (IFW) under varying friction and forge pressures. The microstructural evolution and the associated mechanical properties were characterised across different weld regimes. The welds were free from microcracks and demonstrated higher strength and hardness than the parent metal (PM), indicating enhanced properties. Carbide precipitates were not observed at the weld interface, implying no occurrence of sensitisation in the stainless steel. The presence of refined grains coupled with low grain orientation spread (GOS) values was the indication of continuous dynamic recrystallisation (CDRX) occurring during IFW.

AB - Defect-free welds between A-516 ferritic and 316L austenitic stainless steel were achieved using inertia friction welding (IFW) under varying friction and forge pressures. The microstructural evolution and the associated mechanical properties were characterised across different weld regimes. The welds were free from microcracks and demonstrated higher strength and hardness than the parent metal (PM), indicating enhanced properties. Carbide precipitates were not observed at the weld interface, implying no occurrence of sensitisation in the stainless steel. The presence of refined grains coupled with low grain orientation spread (GOS) values was the indication of continuous dynamic recrystallisation (CDRX) occurring during IFW.

KW - friction welding

KW - bond interface

KW - mechanical properties

KW - dynamic recrystallisation

KW - microstructure

U2 - 10.1016/j.mfglet.2022.07.002

DO - 10.1016/j.mfglet.2022.07.002

M3 - Letter

SN - 2213-8463

VL - 33

SP - 33

EP - 37

JO - Manufacturing Letters

JF - Manufacturing Letters

ER -

Microstructure and mechanical properties of dissimilar inertia friction welded 316L stainless steel to A516 ferritic steel for potential applications in nuclear reactors

Abstract

Keywords

UN SDGs

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