Microstructure and properties of Ti–6Al–4V alloy welded joint by keyhole gas tungsten arc welding
In this paper, 12 mm Ti6Al4V titanium was successfully welded in a single pass using the keyhole gas tungsten arc welding technology, without special edge preparation or the addition of a filler material. The microstructure and properties of the welded joint are studied. The microstructure of the jo...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2021-10, Vol.827, p.142024, Article 142024 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Gao, Fuyang Cui, Yongjie Lv, Yifan Yu, Wei Jiang, Peng |
| description | In this paper, 12 mm Ti6Al4V titanium was successfully welded in a single pass using the keyhole gas tungsten arc welding technology, without special edge preparation or the addition of a filler material. The microstructure and properties of the welded joint are studied. The microstructure of the joint was classified and characterized in detail according to the difference of the effect of welding thermal cycle, and the difference of the top, middle and bottom microstructure of the joint was compared and analyzed. The microhardness of transverse joint fluctuates in the range of 50HV0.2. The difference of longitudinal microhardness is about 100HV0.2. The lowest is 280 HV0.2, and the highest is 378 HV0.2. The tensile strength of the joint reaches 925 MPa. The fracture position of the joint is located in the base metal. The Charpy impact energy of the weld center reaches 50J, which is 56% higher than that of the base metal 32J, and the weld metal shows good toughness. |
| doi_str_mv | 10.1016/j.msea.2021.142024 |
| format | Article |
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The microstructure and properties of the welded joint are studied. The microstructure of the joint was classified and characterized in detail according to the difference of the effect of welding thermal cycle, and the difference of the top, middle and bottom microstructure of the joint was compared and analyzed. The microhardness of transverse joint fluctuates in the range of 50HV0.2. The difference of longitudinal microhardness is about 100HV0.2. The lowest is 280 HV0.2, and the highest is 378 HV0.2. The tensile strength of the joint reaches 925 MPa. The fracture position of the joint is located in the base metal. The Charpy impact energy of the weld center reaches 50J, which is 56% higher than that of the base metal 32J, and the weld metal shows good toughness.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2021.142024</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Base metal ; Gas tungsten arc welding ; Impact strength ; Keyhole gas tungsten arc welding ; Keyholes ; Mechanical properties ; Microhardness ; Microstructure ; Microstructures ; Tensile strength ; Titanium alloy ; Titanium base alloys ; Weld metal ; Welded joints</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>In this paper, 12 mm Ti6Al4V titanium was successfully welded in a single pass using the keyhole gas tungsten arc welding technology, without special edge preparation or the addition of a filler material. The microstructure and properties of the welded joint are studied. The microstructure of the joint was classified and characterized in detail according to the difference of the effect of welding thermal cycle, and the difference of the top, middle and bottom microstructure of the joint was compared and analyzed. The microhardness of transverse joint fluctuates in the range of 50HV0.2. The difference of longitudinal microhardness is about 100HV0.2. The lowest is 280 HV0.2, and the highest is 378 HV0.2. The tensile strength of the joint reaches 925 MPa. The fracture position of the joint is located in the base metal. The Charpy impact energy of the weld center reaches 50J, which is 56% higher than that of the base metal 32J, and the weld metal shows good toughness.</description><subject>Base metal</subject><subject>Gas tungsten arc welding</subject><subject>Impact strength</subject><subject>Keyhole gas tungsten arc welding</subject><subject>Keyholes</subject><subject>Mechanical properties</subject><subject>Microhardness</subject><subject>Microstructure</subject><subject>Microstructures</subject><subject>Tensile strength</subject><subject>Titanium alloy</subject><subject>Titanium base alloys</subject><subject>Weld metal</subject><subject>Welded joints</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kE1OwzAQhS0EEqVwAVaWWKfYiePEEpuq4k8qYlPYWk48KQ5pUmwHlB134IacBIewZjNv897MvA-hc0oWlFB-WS92DtQiJjFdUBaEHaAZzbMkYiLhh2hGREyjlIjkGJ04VxNCKCPpDMGDKW3nvO1L31vAqtV4b7s9WG_A4a7CG_P9-cWXTZjsGaum6Qb8AY0GjevOtB4XA36F4aVrAG-Vw75vt85Di5Utf42m3Z6io0o1Ds7-dI6ebq43q7to_Xh7v1quozIRzEcJyTXNVKYEpynLYkJAcy2KIs3TSpCcVilleehIVVmFSMUrHnwp1QnLCsaTObqY9oYKbz04L-uut204KWNOuIgFY3FwxZNrbO4sVHJvzU7ZQVIiR5yyliNOOeKUE84QuppCEP5_N2ClKw20JWhjofRSd-a_-A-y4X8F</recordid><startdate>20211019</startdate><enddate>20211019</enddate><creator>Gao, Fuyang</creator><creator>Cui, Yongjie</creator><creator>Lv, Yifan</creator><creator>Yu, Wei</creator><creator>Jiang, Peng</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20211019</creationdate><title>Microstructure and properties of Ti–6Al–4V alloy welded joint by keyhole gas tungsten arc welding</title><author>Gao, Fuyang ; Cui, Yongjie ; Lv, Yifan ; Yu, Wei ; Jiang, Peng</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-308d17a7a961547200ed6d9bb585f9081f51480211acfc39f6f654751d347b463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Base metal</topic><topic>Gas tungsten arc welding</topic><topic>Impact strength</topic><topic>Keyhole gas tungsten arc welding</topic><topic>Keyholes</topic><topic>Mechanical properties</topic><topic>Microhardness</topic><topic>Microstructure</topic><topic>Microstructures</topic><topic>Tensile strength</topic><topic>Titanium alloy</topic><topic>Titanium base alloys</topic><topic>Weld metal</topic><topic>Welded joints</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gao, Fuyang</creatorcontrib><creatorcontrib>Cui, Yongjie</creatorcontrib><creatorcontrib>Lv, Yifan</creatorcontrib><creatorcontrib>Yu, Wei</creatorcontrib><creatorcontrib>Jiang, Peng</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gao, Fuyang</au><au>Cui, Yongjie</au><au>Lv, Yifan</au><au>Yu, Wei</au><au>Jiang, Peng</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure and properties of Ti–6Al–4V alloy welded joint by keyhole gas tungsten arc welding</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2021-10-19</date><risdate>2021</risdate><volume>827</volume><spage>142024</spage><pages>142024-</pages><artnum>142024</artnum><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>In this paper, 12 mm Ti6Al4V titanium was successfully welded in a single pass using the keyhole gas tungsten arc welding technology, without special edge preparation or the addition of a filler material. The microstructure and properties of the welded joint are studied. The microstructure of the joint was classified and characterized in detail according to the difference of the effect of welding thermal cycle, and the difference of the top, middle and bottom microstructure of the joint was compared and analyzed. The microhardness of transverse joint fluctuates in the range of 50HV0.2. The difference of longitudinal microhardness is about 100HV0.2. The lowest is 280 HV0.2, and the highest is 378 HV0.2. The tensile strength of the joint reaches 925 MPa. The fracture position of the joint is located in the base metal. The Charpy impact energy of the weld center reaches 50J, which is 56% higher than that of the base metal 32J, and the weld metal shows good toughness.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2021.142024</doi></addata></record> |
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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2021-10, Vol.827, p.142024, Article 142024 |
| issn | 0921-5093 1873-4936 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Base metal Gas tungsten arc welding Impact strength Keyhole gas tungsten arc welding Keyholes Mechanical properties Microhardness Microstructure Microstructures Tensile strength Titanium alloy Titanium base alloys Weld metal Welded joints |
| title | Microstructure and properties of Ti–6Al–4V alloy welded joint by keyhole gas tungsten arc welding |
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