Effect of solution heat treatment on microstructure and mechanical properties of laser powder bed fusion produced cobalt-28chromium-6molybdenum
Cobalt-chromium-molybdenum (CoCrMo) alloys have excellent properties that make them widely used in dental applications. Selective laser melting (SLM) is a laser powder bed fusion (L-PBF) additive manufacturing (AM), or 3D printing, technique that can fabricate functional parts directly using these a...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2020-01, Vol.769, p.138511, Article 138511 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Sing, Swee Leong Huang, Sheng Yeong, Wai Yee |
| description | Cobalt-chromium-molybdenum (CoCrMo) alloys have excellent properties that make them widely used in dental applications. Selective laser melting (SLM) is a laser powder bed fusion (L-PBF) additive manufacturing (AM), or 3D printing, technique that can fabricate functional parts directly using these alloys.
In this work, SLM is used to fabricate CoCrMo samples and they underwent different heat treatments originally designed for casted CoCrMo alloy. The mechanical properties, such as ultimate tensile strength, yield strength and microhardness of the heat treated SLM CoCrMo parts are evaluated and benchmarked against their casted counterparts. It is found that as-built samples have anisotropy properties while heat treated samples displayed isotropic properties. As-built SLM CoCrMo specimens demonstrated approximately twice the yield strength (YS) and ultimate tensile strength (UTS) as compared to ASTM F75 standard for cast CoCrMo alloys. However, both UTS and YS of SLM CoCrMo decreased after heat treatment. The microstructure analysis concluded carbides formation because of the heat treatments.
•SLM is used to fabricate CoCrMo samples for different heat treatments .•As-built SLM CoCrMo demonstrated approximately twice the mechanical strengths as compared to ASTM F75 standard.•Both UTS and YS of SLM CoCrMo decreased after heat treatment due to formation of carbides. |
| doi_str_mv | 10.1016/j.msea.2019.138511 |
| format | Article |
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In this work, SLM is used to fabricate CoCrMo samples and they underwent different heat treatments originally designed for casted CoCrMo alloy. The mechanical properties, such as ultimate tensile strength, yield strength and microhardness of the heat treated SLM CoCrMo parts are evaluated and benchmarked against their casted counterparts. It is found that as-built samples have anisotropy properties while heat treated samples displayed isotropic properties. As-built SLM CoCrMo specimens demonstrated approximately twice the yield strength (YS) and ultimate tensile strength (UTS) as compared to ASTM F75 standard for cast CoCrMo alloys. However, both UTS and YS of SLM CoCrMo decreased after heat treatment. The microstructure analysis concluded carbides formation because of the heat treatments.
•SLM is used to fabricate CoCrMo samples for different heat treatments .•As-built SLM CoCrMo demonstrated approximately twice the mechanical strengths as compared to ASTM F75 standard.•Both UTS and YS of SLM CoCrMo decreased after heat treatment due to formation of carbides.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2019.138511</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>3D printing ; Additive manufacturing ; Anisotropy ; Chromium ; Cobalt base alloys ; Dental alloys ; Dental materials ; Heat treating ; Heat treatment ; Laser beam melting ; Lasers ; Mechanical properties ; Microhardness ; Microstructure ; Powder bed fusion ; Powder beds ; Rapid prototyping ; Selective laser melting ; Solution heat treatment ; Tensile strength ; Three dimensional printing ; Ultimate tensile strength ; Yield strength ; Yield stress</subject><ispartof>Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2020-01, Vol.769, p.138511, Article 138511</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jan 2, 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c491t-5ab86956f9efb09f4a16c8464f90ef492f736777fc0d7920d6c402dd1f7fa8353</citedby><cites>FETCH-LOGICAL-c491t-5ab86956f9efb09f4a16c8464f90ef492f736777fc0d7920d6c402dd1f7fa8353</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.msea.2019.138511$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Sing, Swee Leong</creatorcontrib><creatorcontrib>Huang, Sheng</creatorcontrib><creatorcontrib>Yeong, Wai Yee</creatorcontrib><title>Effect of solution heat treatment on microstructure and mechanical properties of laser powder bed fusion produced cobalt-28chromium-6molybdenum</title><title>Materials science & engineering. A, Structural materials : properties, microstructure and processing</title><description>Cobalt-chromium-molybdenum (CoCrMo) alloys have excellent properties that make them widely used in dental applications. Selective laser melting (SLM) is a laser powder bed fusion (L-PBF) additive manufacturing (AM), or 3D printing, technique that can fabricate functional parts directly using these alloys.
In this work, SLM is used to fabricate CoCrMo samples and they underwent different heat treatments originally designed for casted CoCrMo alloy. The mechanical properties, such as ultimate tensile strength, yield strength and microhardness of the heat treated SLM CoCrMo parts are evaluated and benchmarked against their casted counterparts. It is found that as-built samples have anisotropy properties while heat treated samples displayed isotropic properties. As-built SLM CoCrMo specimens demonstrated approximately twice the yield strength (YS) and ultimate tensile strength (UTS) as compared to ASTM F75 standard for cast CoCrMo alloys. However, both UTS and YS of SLM CoCrMo decreased after heat treatment. The microstructure analysis concluded carbides formation because of the heat treatments.
•SLM is used to fabricate CoCrMo samples for different heat treatments .•As-built SLM CoCrMo demonstrated approximately twice the mechanical strengths as compared to ASTM F75 standard.•Both UTS and YS of SLM CoCrMo decreased after heat treatment due to formation of carbides.</description><subject>3D printing</subject><subject>Additive manufacturing</subject><subject>Anisotropy</subject><subject>Chromium</subject><subject>Cobalt base alloys</subject><subject>Dental alloys</subject><subject>Dental materials</subject><subject>Heat treating</subject><subject>Heat treatment</subject><subject>Laser beam melting</subject><subject>Lasers</subject><subject>Mechanical properties</subject><subject>Microhardness</subject><subject>Microstructure</subject><subject>Powder bed fusion</subject><subject>Powder beds</subject><subject>Rapid prototyping</subject><subject>Selective laser melting</subject><subject>Solution heat treatment</subject><subject>Tensile strength</subject><subject>Three dimensional printing</subject><subject>Ultimate tensile strength</subject><subject>Yield strength</subject><subject>Yield stress</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kMtqHDEQRUWIIRM7P5CVwOueSC21ugXeGONHwJBNshZqqcRoaLXGeiT4K_zLVjNeZ6NC1L23qg5C3ynZU0LFj-M-ZND7nlC5p2waKP2EdnQaWcclE5_RjsiedgOR7Av6mvOREEI5GXbo7d45MAVHh3NcavFxxQfQBZfU3gBra604eJNiLqmaUhNgvVocwBz06o1e8CnFE6TiIW8xi86Q8Cn-s63MYLGreUttKltN-5s466V0_WQOKQZfQydCXF5nC2sNV-jC6SXDt496if483P--e-qefz3-vLt97gyXtHSDnichB-EkuJlIxzUVZuKCO0nAcdm7kYlxHJ0hdpQ9scJw0ltL3ej0xAZ2ia7PuW2tlwq5qGOsaW0jVc_YSAcmOW2q_qzazs8JnDolH3R6VZSoDbw6qg282sCrM_hmujmboO3_10NS2XhY2-k-NdTKRv8_-zs1po80</recordid><startdate>20200102</startdate><enddate>20200102</enddate><creator>Sing, Swee Leong</creator><creator>Huang, Sheng</creator><creator>Yeong, Wai Yee</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>20200102</creationdate><title>Effect of solution heat treatment on microstructure and mechanical properties of laser powder bed fusion produced cobalt-28chromium-6molybdenum</title><author>Sing, Swee Leong ; Huang, Sheng ; Yeong, Wai Yee</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c491t-5ab86956f9efb09f4a16c8464f90ef492f736777fc0d7920d6c402dd1f7fa8353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>3D printing</topic><topic>Additive manufacturing</topic><topic>Anisotropy</topic><topic>Chromium</topic><topic>Cobalt base alloys</topic><topic>Dental alloys</topic><topic>Dental materials</topic><topic>Heat treating</topic><topic>Heat treatment</topic><topic>Laser beam melting</topic><topic>Lasers</topic><topic>Mechanical properties</topic><topic>Microhardness</topic><topic>Microstructure</topic><topic>Powder bed fusion</topic><topic>Powder beds</topic><topic>Rapid prototyping</topic><topic>Selective laser melting</topic><topic>Solution heat treatment</topic><topic>Tensile strength</topic><topic>Three dimensional printing</topic><topic>Ultimate tensile strength</topic><topic>Yield strength</topic><topic>Yield stress</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sing, Swee Leong</creatorcontrib><creatorcontrib>Huang, Sheng</creatorcontrib><creatorcontrib>Yeong, Wai Yee</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>Sing, Swee Leong</au><au>Huang, Sheng</au><au>Yeong, Wai Yee</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of solution heat treatment on microstructure and mechanical properties of laser powder bed fusion produced cobalt-28chromium-6molybdenum</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2020-01-02</date><risdate>2020</risdate><volume>769</volume><spage>138511</spage><pages>138511-</pages><artnum>138511</artnum><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>Cobalt-chromium-molybdenum (CoCrMo) alloys have excellent properties that make them widely used in dental applications. Selective laser melting (SLM) is a laser powder bed fusion (L-PBF) additive manufacturing (AM), or 3D printing, technique that can fabricate functional parts directly using these alloys.
In this work, SLM is used to fabricate CoCrMo samples and they underwent different heat treatments originally designed for casted CoCrMo alloy. The mechanical properties, such as ultimate tensile strength, yield strength and microhardness of the heat treated SLM CoCrMo parts are evaluated and benchmarked against their casted counterparts. It is found that as-built samples have anisotropy properties while heat treated samples displayed isotropic properties. As-built SLM CoCrMo specimens demonstrated approximately twice the yield strength (YS) and ultimate tensile strength (UTS) as compared to ASTM F75 standard for cast CoCrMo alloys. However, both UTS and YS of SLM CoCrMo decreased after heat treatment. The microstructure analysis concluded carbides formation because of the heat treatments.
•SLM is used to fabricate CoCrMo samples for different heat treatments .•As-built SLM CoCrMo demonstrated approximately twice the mechanical strengths as compared to ASTM F75 standard.•Both UTS and YS of SLM CoCrMo decreased after heat treatment due to formation of carbides.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2019.138511</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2020-01, Vol.769, p.138511, Article 138511 |
| issn | 0921-5093 1873-4936 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | 3D printing Additive manufacturing Anisotropy Chromium Cobalt base alloys Dental alloys Dental materials Heat treating Heat treatment Laser beam melting Lasers Mechanical properties Microhardness Microstructure Powder bed fusion Powder beds Rapid prototyping Selective laser melting Solution heat treatment Tensile strength Three dimensional printing Ultimate tensile strength Yield strength Yield stress |
| title | Effect of solution heat treatment on microstructure and mechanical properties of laser powder bed fusion produced cobalt-28chromium-6molybdenum |
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