Metallurgical and mechanical properties of laser welded high strength low alloy steel
[Display omitted] The study aimed at investigating the microstructure and mechanical properties of Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) laser welded high strength low alloy (HSLA) SA516 grade 70 boiler steel. The weld joint for a 4mm thick plate was successfully produced using minimum la...
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| Veröffentlicht in: | Journal of advanced research 2016-05, Vol.7 (3), p.463-472 |
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| creator | Oyyaravelu, Ramachandran Kuppan, Palaniyandi Arivazhagan, Natarajan |
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The study aimed at investigating the microstructure and mechanical properties of Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) laser welded high strength low alloy (HSLA) SA516 grade 70 boiler steel. The weld joint for a 4mm thick plate was successfully produced using minimum laser power of 2kW by employing a single pass without any weld preheat treatment. The micrographs revealed the presence of martensite phase in the weld fusion zone which could be due to faster cooling rate of the laser weldment. A good correlation was found between the microstructural features of the weld joints and their mechanical properties. The highest hardness was found to be in the fusion zone of cap region due to formation of martensite and also enrichment of carbon. The hardness results also showed a narrow soft zone at the heat affected zone (HAZ) adjacent to the weld interface, which has no effect on the weld tensile strength. The yield strength and ultimate tensile strength of the welded joints were 338MPa and 549MPa, respectively, which were higher than the candidate metal. These tensile results suggested that the laser welding process had improved the weld strength even without any weld preheat treatment and also the fractography of the tensile fractured samples showed the ductile mode of failure. |
| doi_str_mv | 10.1016/j.jare.2016.03.005 |
| format | Article |
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The study aimed at investigating the microstructure and mechanical properties of Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) laser welded high strength low alloy (HSLA) SA516 grade 70 boiler steel. The weld joint for a 4mm thick plate was successfully produced using minimum laser power of 2kW by employing a single pass without any weld preheat treatment. The micrographs revealed the presence of martensite phase in the weld fusion zone which could be due to faster cooling rate of the laser weldment. A good correlation was found between the microstructural features of the weld joints and their mechanical properties. The highest hardness was found to be in the fusion zone of cap region due to formation of martensite and also enrichment of carbon. The hardness results also showed a narrow soft zone at the heat affected zone (HAZ) adjacent to the weld interface, which has no effect on the weld tensile strength. The yield strength and ultimate tensile strength of the welded joints were 338MPa and 549MPa, respectively, which were higher than the candidate metal. These tensile results suggested that the laser welding process had improved the weld strength even without any weld preheat treatment and also the fractography of the tensile fractured samples showed the ductile mode of failure.</description><identifier>ISSN: 2090-1232</identifier><identifier>EISSN: 2090-1224</identifier><identifier>DOI: 10.1016/j.jare.2016.03.005</identifier><identifier>PMID: 27222751</identifier><language>eng</language><publisher>Egypt: Elsevier B.V</publisher><subject>HSLA steel ; Mechanical properties ; Metallurgical properties ; Nd:YAG laser welding ; Original ; SA516 grade 70</subject><ispartof>Journal of advanced research, 2016-05, Vol.7 (3), p.463-472</ispartof><rights>2016</rights><rights>2016 Production and hosting by Elsevier B.V. on behalf of Cairo University. 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c455t-ff00645d007daeb96481605cd22ae0894a44eb5741638e2dd7082b0b08f917f13</citedby><cites>FETCH-LOGICAL-c455t-ff00645d007daeb96481605cd22ae0894a44eb5741638e2dd7082b0b08f917f13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4856837/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jare.2016.03.005$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,3550,27924,27925,45995,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27222751$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Oyyaravelu, Ramachandran</creatorcontrib><creatorcontrib>Kuppan, Palaniyandi</creatorcontrib><creatorcontrib>Arivazhagan, Natarajan</creatorcontrib><title>Metallurgical and mechanical properties of laser welded high strength low alloy steel</title><title>Journal of advanced research</title><addtitle>J Adv Res</addtitle><description>[Display omitted]
The study aimed at investigating the microstructure and mechanical properties of Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) laser welded high strength low alloy (HSLA) SA516 grade 70 boiler steel. The weld joint for a 4mm thick plate was successfully produced using minimum laser power of 2kW by employing a single pass without any weld preheat treatment. The micrographs revealed the presence of martensite phase in the weld fusion zone which could be due to faster cooling rate of the laser weldment. A good correlation was found between the microstructural features of the weld joints and their mechanical properties. The highest hardness was found to be in the fusion zone of cap region due to formation of martensite and also enrichment of carbon. The hardness results also showed a narrow soft zone at the heat affected zone (HAZ) adjacent to the weld interface, which has no effect on the weld tensile strength. The yield strength and ultimate tensile strength of the welded joints were 338MPa and 549MPa, respectively, which were higher than the candidate metal. These tensile results suggested that the laser welding process had improved the weld strength even without any weld preheat treatment and also the fractography of the tensile fractured samples showed the ductile mode of failure.</description><subject>HSLA steel</subject><subject>Mechanical properties</subject><subject>Metallurgical properties</subject><subject>Nd:YAG laser welding</subject><subject>Original</subject><subject>SA516 grade 70</subject><issn>2090-1232</issn><issn>2090-1224</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kU1P3DAQhq2KqiDKH-gB-chlw_gjiSMhJIRoi0TVSzlbjj3ZeOWNFzsL4t_X26Wr9oIvMx6_84w1LyFfGFQMWHO5qlYmYcVLXoGoAOoP5IRDBwvGuTw65IIfk7OcV1COUKpj7BM55i3nvK3ZCXn8gbMJYZuW3ppAzeToGu1opj_XTYobTLPHTONAg8mY6AsGh46OfjnSPCeclvNIQ3yhBRNfSwkxfCYfBxMynr3FU_L49e7X7ffFw89v97c3Dwsr63peDANAI2sH0DqDfddIxRqorePcIKhOGimxr1vJGqGQO9eC4j30oIaOtQMTp-R6z91s-zU6i9OcTNCb5NcmvepovP7_ZfKjXsZnLVXdKNEWwMUbIMWnLeZZr322GIKZMG6zZm0ZJETZXJHyvdSmmHPC4TCGgd5Zold6Z4neWaJB6GJJaTr_94OHlr8GFMHVXoBlTc8ek87W42TR-YR21i769_i_AcjingA</recordid><startdate>20160501</startdate><enddate>20160501</enddate><creator>Oyyaravelu, Ramachandran</creator><creator>Kuppan, Palaniyandi</creator><creator>Arivazhagan, Natarajan</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>6I.</scope><scope>AAFTH</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20160501</creationdate><title>Metallurgical and mechanical properties of laser welded high strength low alloy steel</title><author>Oyyaravelu, Ramachandran ; Kuppan, Palaniyandi ; Arivazhagan, Natarajan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c455t-ff00645d007daeb96481605cd22ae0894a44eb5741638e2dd7082b0b08f917f13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>HSLA steel</topic><topic>Mechanical properties</topic><topic>Metallurgical properties</topic><topic>Nd:YAG laser welding</topic><topic>Original</topic><topic>SA516 grade 70</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Oyyaravelu, Ramachandran</creatorcontrib><creatorcontrib>Kuppan, Palaniyandi</creatorcontrib><creatorcontrib>Arivazhagan, Natarajan</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Journal of advanced research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Oyyaravelu, Ramachandran</au><au>Kuppan, Palaniyandi</au><au>Arivazhagan, Natarajan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Metallurgical and mechanical properties of laser welded high strength low alloy steel</atitle><jtitle>Journal of advanced research</jtitle><addtitle>J Adv Res</addtitle><date>2016-05-01</date><risdate>2016</risdate><volume>7</volume><issue>3</issue><spage>463</spage><epage>472</epage><pages>463-472</pages><issn>2090-1232</issn><eissn>2090-1224</eissn><abstract>[Display omitted]
The study aimed at investigating the microstructure and mechanical properties of Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) laser welded high strength low alloy (HSLA) SA516 grade 70 boiler steel. The weld joint for a 4mm thick plate was successfully produced using minimum laser power of 2kW by employing a single pass without any weld preheat treatment. The micrographs revealed the presence of martensite phase in the weld fusion zone which could be due to faster cooling rate of the laser weldment. A good correlation was found between the microstructural features of the weld joints and their mechanical properties. The highest hardness was found to be in the fusion zone of cap region due to formation of martensite and also enrichment of carbon. The hardness results also showed a narrow soft zone at the heat affected zone (HAZ) adjacent to the weld interface, which has no effect on the weld tensile strength. The yield strength and ultimate tensile strength of the welded joints were 338MPa and 549MPa, respectively, which were higher than the candidate metal. These tensile results suggested that the laser welding process had improved the weld strength even without any weld preheat treatment and also the fractography of the tensile fractured samples showed the ductile mode of failure.</abstract><cop>Egypt</cop><pub>Elsevier B.V</pub><pmid>27222751</pmid><doi>10.1016/j.jare.2016.03.005</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | HSLA steel Mechanical properties Metallurgical properties Nd:YAG laser welding Original SA516 grade 70 |
| title | Metallurgical and mechanical properties of laser welded high strength low alloy steel |
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