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The effect of spot-welding heat input on mechanical properties of alloy 600 (UNS N06600) plates
Ardy H.a, Rumendi U.b, Mahfuzh A.a, Wibowo A.a
a Materials Science and Engineering Research Group, Bandung Institute of Technology, Bandung, Indonesia
b Manufacturing Polytechnics, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 American Institute of Physics Inc.. All rights reserved.Spot welding is one the resistance welding methods that has been used widely in manufacturing of machinery components because it does not require filler metals, fast, cheap, and can be applied to wide range of material thickness. Bonding of metals in spot welding was caused by local melting at the interfacial contact. Mechanical properties of weld joints depend strongly on the applied heat input that depends on electric current, total resistance, and welding time. This paper will present the effect of heat input on mechanical and physical properties of Alloy 600 (UNS N06600) that has been welded by spot welding. Welding were conducted at various current of 9, 11, and 13 kA; and welding times of 1.3 and 1.5 second. The welding samples were examined by chemical analysis, tensile shear test, hardness test, fractography, and metallography. Metal expulsion phenomenon were observed in all samples. The expulsion reduced tensile strength from 621 to 519 MPa. The increase in heat input from 23 to 56 kJ will increase the nugget size from 2.8 to 4.2 mm, and HAZ width from 179 to 435 µm. The average hardness of base metal, HAZ, and nugget are 172, 165, and 170 HV respectively. Microstructural examinations revealed grain growth in HAZ, the formation of cellular dendritic grains, and chromium carbides precipitates.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Alloy 600,Heat input,Mechanical properties,Nugget size,Spot welding[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1063/5.0016804[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]