Microstructure and tribological properties of laser in-situ synthesized Ti3Al composite coating on Ti-6Al-4V
Titanium intermetallics are highly significant to protect surfaces of lightweight structures against corrosion and wear. In this study, Ti and Al powders were uniformly mixed with an atomic ratio 65:35 and in-situ synthesized on Ti-6Al-4V substrate by laser cladding with Ar cooling. The microstructu...
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| Veröffentlicht in: | Surface & coatings technology 2020-08, Vol.395, p.125944, Article 125944 |
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| creator | Zhang, Wenbin Li, Wensheng Zhai, Haimin Wu, Yanrong Wang, Shuncai Liang, Gang Wood, Robert J.K. |
| description | Titanium intermetallics are highly significant to protect surfaces of lightweight structures against corrosion and wear. In this study, Ti and Al powders were uniformly mixed with an atomic ratio 65:35 and in-situ synthesized on Ti-6Al-4V substrate by laser cladding with Ar cooling. The microstructure and high temperature tribological behavior were studied. The results show that Ti3Al (α2) phase was first precipitated in the form of coarse primary dendrites during cladding solidification, and subsequently α-Ti (α) phase of needle-shaped martensite was formed by fast cooling. The 6:4 ratio of phase α2 to α of the composite coating provides optimal toughness and high hardness (680 HV). Under the testing up to 500 °C, the average friction coefficient of the composite coating is 0.22 ± 0.011 and a 35% lower wear rate than that of Ti-6Al-4V substrate.
•Ti3Al composite coating has been synthesized in-situ by laser cladding.•The 6:4 ratio of α2 to α phase provides the coating with adequate toughness.•Coating show better high-temperature oxidation resistance than Ti-6Al-4V in friction. |
| doi_str_mv | 10.1016/j.surfcoat.2020.125944 |
| format | Article |
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•Ti3Al composite coating has been synthesized in-situ by laser cladding.•The 6:4 ratio of α2 to α phase provides the coating with adequate toughness.•Coating show better high-temperature oxidation resistance than Ti-6Al-4V in friction.</description><identifier>ISSN: 0257-8972</identifier><identifier>EISSN: 1879-3347</identifier><identifier>DOI: 10.1016/j.surfcoat.2020.125944</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Coating ; Coefficient of friction ; Corrosive wear ; Friction and Wear ; High temperature ; Intermetallic compounds ; Laser beam cladding ; Laser cladding ; Laser cooling ; Martensite ; Microstructure ; Solidification ; Substrates ; Synthesis ; Ti3Al composite coating ; Titanium aluminides ; Titanium base alloys ; Tribology ; Wear rate</subject><ispartof>Surface & coatings technology, 2020-08, Vol.395, p.125944, Article 125944</ispartof><rights>2020 Elsevier B.V.</rights><rights>Copyright Elsevier BV Aug 15, 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c388t-5074fc61316aa93b8e6392b05ec7bb1f20596093df4fb461a070d0593b2799b3</citedby><cites>FETCH-LOGICAL-c388t-5074fc61316aa93b8e6392b05ec7bb1f20596093df4fb461a070d0593b2799b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.surfcoat.2020.125944$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Zhang, Wenbin</creatorcontrib><creatorcontrib>Li, Wensheng</creatorcontrib><creatorcontrib>Zhai, Haimin</creatorcontrib><creatorcontrib>Wu, Yanrong</creatorcontrib><creatorcontrib>Wang, Shuncai</creatorcontrib><creatorcontrib>Liang, Gang</creatorcontrib><creatorcontrib>Wood, Robert J.K.</creatorcontrib><title>Microstructure and tribological properties of laser in-situ synthesized Ti3Al composite coating on Ti-6Al-4V</title><title>Surface & coatings technology</title><description>Titanium intermetallics are highly significant to protect surfaces of lightweight structures against corrosion and wear. In this study, Ti and Al powders were uniformly mixed with an atomic ratio 65:35 and in-situ synthesized on Ti-6Al-4V substrate by laser cladding with Ar cooling. The microstructure and high temperature tribological behavior were studied. The results show that Ti3Al (α2) phase was first precipitated in the form of coarse primary dendrites during cladding solidification, and subsequently α-Ti (α) phase of needle-shaped martensite was formed by fast cooling. The 6:4 ratio of phase α2 to α of the composite coating provides optimal toughness and high hardness (680 HV). Under the testing up to 500 °C, the average friction coefficient of the composite coating is 0.22 ± 0.011 and a 35% lower wear rate than that of Ti-6Al-4V substrate.
•Ti3Al composite coating has been synthesized in-situ by laser cladding.•The 6:4 ratio of α2 to α phase provides the coating with adequate toughness.•Coating show better high-temperature oxidation resistance than Ti-6Al-4V in friction.</description><subject>Coating</subject><subject>Coefficient of friction</subject><subject>Corrosive wear</subject><subject>Friction and Wear</subject><subject>High temperature</subject><subject>Intermetallic compounds</subject><subject>Laser beam cladding</subject><subject>Laser cladding</subject><subject>Laser cooling</subject><subject>Martensite</subject><subject>Microstructure</subject><subject>Solidification</subject><subject>Substrates</subject><subject>Synthesis</subject><subject>Ti3Al composite coating</subject><subject>Titanium aluminides</subject><subject>Titanium base alloys</subject><subject>Tribology</subject><subject>Wear rate</subject><issn>0257-8972</issn><issn>1879-3347</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkEtLAzEUhYMoWB9_QQKup-Y1k8nOUnxBxU1xGzKZOzVlOhmTjFB_vSnVtasL95z7OB9CN5TMKaHV3XYep9BZb9KcEZabrFRCnKAZraUqOBfyFM0IK2VRK8nO0UWMW0IIlUrMUP_qbPAxhcmmKQA2Q4tTcI3v_cZZ0-Mx-BFCchCx73BvIgTshiK6NOG4H9IHRPcNLV47vuix9bvRZw3w4R83bLAfslRUi74Q71forDN9hOvfeonWjw_r5XOxent6WS5WheV1nYqSSNHZinJaGaN4U0PFFWtICVY2De0YKVVFFG870TWiooZI0uYeb5hUquGX6Pa4Nv_-OUFMeuunMOSLmgkuhKp5WWZXdXQd8scAnR6D25mw15ToA1i91X9g9QGsPoLNg_fHQcgRvhwEHa2DwULrAtikW-_-W_EDF5aFdA</recordid><startdate>20200815</startdate><enddate>20200815</enddate><creator>Zhang, Wenbin</creator><creator>Li, Wensheng</creator><creator>Zhai, Haimin</creator><creator>Wu, Yanrong</creator><creator>Wang, Shuncai</creator><creator>Liang, Gang</creator><creator>Wood, Robert J.K.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20200815</creationdate><title>Microstructure and tribological properties of laser in-situ synthesized Ti3Al composite coating on Ti-6Al-4V</title><author>Zhang, Wenbin ; Li, Wensheng ; Zhai, Haimin ; Wu, Yanrong ; Wang, Shuncai ; Liang, Gang ; Wood, Robert J.K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c388t-5074fc61316aa93b8e6392b05ec7bb1f20596093df4fb461a070d0593b2799b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Coating</topic><topic>Coefficient of friction</topic><topic>Corrosive wear</topic><topic>Friction and Wear</topic><topic>High temperature</topic><topic>Intermetallic compounds</topic><topic>Laser beam cladding</topic><topic>Laser cladding</topic><topic>Laser cooling</topic><topic>Martensite</topic><topic>Microstructure</topic><topic>Solidification</topic><topic>Substrates</topic><topic>Synthesis</topic><topic>Ti3Al composite coating</topic><topic>Titanium aluminides</topic><topic>Titanium base alloys</topic><topic>Tribology</topic><topic>Wear rate</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Wenbin</creatorcontrib><creatorcontrib>Li, Wensheng</creatorcontrib><creatorcontrib>Zhai, Haimin</creatorcontrib><creatorcontrib>Wu, Yanrong</creatorcontrib><creatorcontrib>Wang, Shuncai</creatorcontrib><creatorcontrib>Liang, Gang</creatorcontrib><creatorcontrib>Wood, Robert J.K.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Surface & coatings technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Wenbin</au><au>Li, Wensheng</au><au>Zhai, Haimin</au><au>Wu, Yanrong</au><au>Wang, Shuncai</au><au>Liang, Gang</au><au>Wood, Robert J.K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure and tribological properties of laser in-situ synthesized Ti3Al composite coating on Ti-6Al-4V</atitle><jtitle>Surface & coatings technology</jtitle><date>2020-08-15</date><risdate>2020</risdate><volume>395</volume><spage>125944</spage><pages>125944-</pages><artnum>125944</artnum><issn>0257-8972</issn><eissn>1879-3347</eissn><abstract>Titanium intermetallics are highly significant to protect surfaces of lightweight structures against corrosion and wear. In this study, Ti and Al powders were uniformly mixed with an atomic ratio 65:35 and in-situ synthesized on Ti-6Al-4V substrate by laser cladding with Ar cooling. The microstructure and high temperature tribological behavior were studied. The results show that Ti3Al (α2) phase was first precipitated in the form of coarse primary dendrites during cladding solidification, and subsequently α-Ti (α) phase of needle-shaped martensite was formed by fast cooling. The 6:4 ratio of phase α2 to α of the composite coating provides optimal toughness and high hardness (680 HV). Under the testing up to 500 °C, the average friction coefficient of the composite coating is 0.22 ± 0.011 and a 35% lower wear rate than that of Ti-6Al-4V substrate.
•Ti3Al composite coating has been synthesized in-situ by laser cladding.•The 6:4 ratio of α2 to α phase provides the coating with adequate toughness.•Coating show better high-temperature oxidation resistance than Ti-6Al-4V in friction.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.surfcoat.2020.125944</doi><oa>free_for_read</oa></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Coating Coefficient of friction Corrosive wear Friction and Wear High temperature Intermetallic compounds Laser beam cladding Laser cladding Laser cooling Martensite Microstructure Solidification Substrates Synthesis Ti3Al composite coating Titanium aluminides Titanium base alloys Tribology Wear rate |
| title | Microstructure and tribological properties of laser in-situ synthesized Ti3Al composite coating on Ti-6Al-4V |
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