Role of zinc layer in resistance spot welding of aluminium to steel
Effects of zinc layer on microstructure and mechanical behavior of resistance spot welds of aluminum to galvanized (GS-Al joint) and low carbon steel (PS-Al joint) were explored. The results showed that although nugget ‘volume’ in PS-Al joint was larger, the nugget ‘diameters’ of PS-Al and GS-Al joi...
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| Veröffentlicht in: | Materials & design 2016-07, Vol.102, p.106-114 |
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| creator | Arghavani, M.R. Movahedi, M. Kokabi, A.H. |
| description | Effects of zinc layer on microstructure and mechanical behavior of resistance spot welds of aluminum to galvanized (GS-Al joint) and low carbon steel (PS-Al joint) were explored. The results showed that although nugget ‘volume’ in PS-Al joint was larger, the nugget ‘diameters’ of PS-Al and GS-Al joints were almost the same in size since the melted zinc layer was pushed toward the outer regions of the nugget. Melting and evaporation of zinc coat led to reduction of Al-Fe intermetallic layer thickness. Presence of zinc also reduced the fixture-induced tensile stress. Utilizing carbon steel fixtures during welding caused a sensible vibration in the joint members. The vibration resulted in fragmentation and decrease of the intermetallic compounds at the joint interface. Moreover, while PS-Al joints showed higher strength than that of GS-Al ones at the welding currents |
| doi_str_mv | 10.1016/j.matdes.2016.04.033 |
| format | Article |
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[Display omitted]
•Role of zinc layer in resistance spot welding of aluminum to steel was explored.•Melting and evaporation of zinc coat led to reduction of IMC layer thickness.•Presence of zinc reduced the fixture-induced tensile stress.•Utilizing carbon steel fixtures caused a sensible vibration in joint members.•Fracture load of GS-Al welds exceeded PS-Al joints beyond 12kA.</description><identifier>ISSN: 0264-1275</identifier><identifier>EISSN: 1873-4197</identifier><identifier>DOI: 10.1016/j.matdes.2016.04.033</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Aluminium ; Aluminum ; Carbon steel ; Galvanized steel ; Intermetallic ; Intermetallics ; Mechanical properties ; Resistance spot welding ; Shear-tensile load ; Thickness ; Vibration ; Welded joints ; Welding current ; Zinc</subject><ispartof>Materials & design, 2016-07, Vol.102, p.106-114</ispartof><rights>2016 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c339t-6ae4c306572a43df53b9625e8baf6392b5fddc79664211c39350209994d9eef73</citedby><cites>FETCH-LOGICAL-c339t-6ae4c306572a43df53b9625e8baf6392b5fddc79664211c39350209994d9eef73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Arghavani, M.R.</creatorcontrib><creatorcontrib>Movahedi, M.</creatorcontrib><creatorcontrib>Kokabi, A.H.</creatorcontrib><title>Role of zinc layer in resistance spot welding of aluminium to steel</title><title>Materials & design</title><description>Effects of zinc layer on microstructure and mechanical behavior of resistance spot welds of aluminum to galvanized (GS-Al joint) and low carbon steel (PS-Al joint) were explored. The results showed that although nugget ‘volume’ in PS-Al joint was larger, the nugget ‘diameters’ of PS-Al and GS-Al joints were almost the same in size since the melted zinc layer was pushed toward the outer regions of the nugget. Melting and evaporation of zinc coat led to reduction of Al-Fe intermetallic layer thickness. Presence of zinc also reduced the fixture-induced tensile stress. Utilizing carbon steel fixtures during welding caused a sensible vibration in the joint members. The vibration resulted in fragmentation and decrease of the intermetallic compounds at the joint interface. Moreover, while PS-Al joints showed higher strength than that of GS-Al ones at the welding currents <12kA, fracture load of GS-Al welds exceeded PS-Al joints beyond 12kA. Low welding current resulted in an incomplete joint at GS-Al welds. However, lower induced tensile stress, as well as the formation of intermetallic layer with the thickness smaller than the critical value (~5.5μm) in GS-Al joints, led to superior mechanical properties at high welding currents.
[Display omitted]
•Role of zinc layer in resistance spot welding of aluminum to steel was explored.•Melting and evaporation of zinc coat led to reduction of IMC layer thickness.•Presence of zinc reduced the fixture-induced tensile stress.•Utilizing carbon steel fixtures caused a sensible vibration in joint members.•Fracture load of GS-Al welds exceeded PS-Al joints beyond 12kA.</description><subject>Aluminium</subject><subject>Aluminum</subject><subject>Carbon steel</subject><subject>Galvanized steel</subject><subject>Intermetallic</subject><subject>Intermetallics</subject><subject>Mechanical properties</subject><subject>Resistance spot welding</subject><subject>Shear-tensile load</subject><subject>Thickness</subject><subject>Vibration</subject><subject>Welded joints</subject><subject>Welding current</subject><subject>Zinc</subject><issn>0264-1275</issn><issn>1873-4197</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAUhYMoOI7-AxdZumnNq2mzEWTwBQOC6DpkklvJkDZjkir66-0wrl1dDnznwP0QuqSkpoTK6209mOIg12xONRE14fwILWjX8kpQ1R6jBWFSVJS1zSk6y3lLCGMtFwu0eokBcOzxjx8tDuYbEvYjTpB9Lma0gPMuFvwFwfnxfQ-aMA1-9NOAS8S5AIRzdNKbkOHi7y7R2_3d6-qxWj8_PK1u15XlXJVKGhCWE9m0zAju-oZvlGQNdBvTS67Ypumds62SUjBKLVe8IYwopYRTAH3Ll-jqsLtL8WOCXPTgs4UQzAhxypp2VBKmOtLNqDigNsWcE_R6l_xg0remRO-d6a0-ONN7Z5oIPTubazeHGsxvfHpIOlsPswXnE9iiXfT_D_wC8Xt2KA</recordid><startdate>20160715</startdate><enddate>20160715</enddate><creator>Arghavani, M.R.</creator><creator>Movahedi, M.</creator><creator>Kokabi, A.H.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20160715</creationdate><title>Role of zinc layer in resistance spot welding of aluminium to steel</title><author>Arghavani, M.R. ; Movahedi, M. ; Kokabi, A.H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c339t-6ae4c306572a43df53b9625e8baf6392b5fddc79664211c39350209994d9eef73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Aluminium</topic><topic>Aluminum</topic><topic>Carbon steel</topic><topic>Galvanized steel</topic><topic>Intermetallic</topic><topic>Intermetallics</topic><topic>Mechanical properties</topic><topic>Resistance spot welding</topic><topic>Shear-tensile load</topic><topic>Thickness</topic><topic>Vibration</topic><topic>Welded joints</topic><topic>Welding current</topic><topic>Zinc</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Arghavani, M.R.</creatorcontrib><creatorcontrib>Movahedi, M.</creatorcontrib><creatorcontrib>Kokabi, A.H.</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials & design</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Arghavani, M.R.</au><au>Movahedi, M.</au><au>Kokabi, A.H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Role of zinc layer in resistance spot welding of aluminium to steel</atitle><jtitle>Materials & design</jtitle><date>2016-07-15</date><risdate>2016</risdate><volume>102</volume><spage>106</spage><epage>114</epage><pages>106-114</pages><issn>0264-1275</issn><eissn>1873-4197</eissn><abstract>Effects of zinc layer on microstructure and mechanical behavior of resistance spot welds of aluminum to galvanized (GS-Al joint) and low carbon steel (PS-Al joint) were explored. The results showed that although nugget ‘volume’ in PS-Al joint was larger, the nugget ‘diameters’ of PS-Al and GS-Al joints were almost the same in size since the melted zinc layer was pushed toward the outer regions of the nugget. Melting and evaporation of zinc coat led to reduction of Al-Fe intermetallic layer thickness. Presence of zinc also reduced the fixture-induced tensile stress. Utilizing carbon steel fixtures during welding caused a sensible vibration in the joint members. The vibration resulted in fragmentation and decrease of the intermetallic compounds at the joint interface. Moreover, while PS-Al joints showed higher strength than that of GS-Al ones at the welding currents <12kA, fracture load of GS-Al welds exceeded PS-Al joints beyond 12kA. Low welding current resulted in an incomplete joint at GS-Al welds. However, lower induced tensile stress, as well as the formation of intermetallic layer with the thickness smaller than the critical value (~5.5μm) in GS-Al joints, led to superior mechanical properties at high welding currents.
[Display omitted]
•Role of zinc layer in resistance spot welding of aluminum to steel was explored.•Melting and evaporation of zinc coat led to reduction of IMC layer thickness.•Presence of zinc reduced the fixture-induced tensile stress.•Utilizing carbon steel fixtures caused a sensible vibration in joint members.•Fracture load of GS-Al welds exceeded PS-Al joints beyond 12kA.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.matdes.2016.04.033</doi><tpages>9</tpages></addata></record> |
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| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Aluminium Aluminum Carbon steel Galvanized steel Intermetallic Intermetallics Mechanical properties Resistance spot welding Shear-tensile load Thickness Vibration Welded joints Welding current Zinc |
| title | Role of zinc layer in resistance spot welding of aluminium to steel |
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