Microstructure and mechanical properties of additively manufactured CoCrW alloy using laser metal deposition
We successfully used CoCrW alloy as the feedstock for directly shaping wear-resistant products by additive manufacturing. We present a guideline for forming substantive, high-density, crack-free CoCrW alloys via laser metal deposition (LMD) and evaluated the relationship between the microstructure a...
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| Veröffentlicht in: | Welding in the world 2020-08, Vol.64 (8), p.1397-1407 |
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| container_title | Welding in the world |
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| creator | Miyake, Masashi Matsuda, Tomoki Sano, Tomokazu Hirose, Akio Shiomi, Yasutomo Sasaki, Mitsuo |
| description | We successfully used CoCrW alloy as the feedstock for directly shaping wear-resistant products by additive manufacturing. We present a guideline for forming substantive, high-density, crack-free CoCrW alloys via laser metal deposition (LMD) and evaluated the relationship between the microstructure and mechanical properties. CoCrW alloy with a scale of several tens of cubic centimeters has not been previously reported because the brittle material undergoes cracking due to residual stresses. Densification and crack suppression were achieved by controlling the oxygen concentration in an Ar atmosphere and preheating the base plate to 400 °C. The tensile strength (MPa) of the LMDed CoCrW alloy was 1492 ± 141 along the scan direction, 1464 ± 234 along the overlap direction, and 1359 ± 72 along the build direction. The overlap direction had almost the same strength as the scan direction. In the microtensile test for the overlap direction, the fracture ratio in the overlap region was only 17.4%, and it was found that softening in this region did not contribute to the decrease in strength. |
| doi_str_mv | 10.1007/s40194-020-00926-y |
| format | Article |
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In the microtensile test for the overlap direction, the fracture ratio in the overlap region was only 17.4%, and it was found that softening in this region did not contribute to the decrease in strength.</description><subject>Additive manufacturing</subject><subject>Alloys</subject><subject>Brittle materials</subject><subject>Chemistry and Materials Science</subject><subject>Densification</subject><subject>Heating</subject><subject>Laser deposition</subject><subject>Materials Science</subject><subject>Mechanical properties</subject><subject>Metallic Materials</subject><subject>Microstructure</subject><subject>Research Paper</subject><subject>Residual stress</subject><subject>Solid Mechanics</subject><subject>Tensile strength</subject><subject>Theoretical and Applied Mechanics</subject><subject>Wear resistance</subject><issn>0043-2288</issn><issn>1878-6669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMouK7-AU8Bz9F8bZoepfgFihfFY5g2ydql29SkFfrvze4K3jwMc3mfd4YHoUtGrxmlxU2SlJWSUE4JpSVXZD5CC6YLTZRS5TFaUCoF4VzrU3SW0obmVJ4F6l7aJoY0xqkZp-gw9BZvXfMJfdtAh4cYBhfH1iUcPAZr27H9dt2Mt9BPHvaMxVWo4geGrgsznlLbr3EHycVcNOYO64aQMhf6c3TioUvu4ncv0fv93Vv1SJ5fH56q22fSCL0aifBOyJVQVoIulFoBq6mHkhdC16Jm2tNGAm-0KrW1VLmyUE4Lz8DXXgHTYomuDr35_a_JpdFswhT7fNJwKaTOV8oip_ghtROQovNmiO0W4mwYNTur5mDVZKtmb9XMGRIHKOVwv3bxr_of6gdA3H1R</recordid><startdate>20200801</startdate><enddate>20200801</enddate><creator>Miyake, Masashi</creator><creator>Matsuda, Tomoki</creator><creator>Sano, Tomokazu</creator><creator>Hirose, Akio</creator><creator>Shiomi, Yasutomo</creator><creator>Sasaki, Mitsuo</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20200801</creationdate><title>Microstructure and mechanical properties of additively manufactured CoCrW alloy using laser metal deposition</title><author>Miyake, Masashi ; Matsuda, Tomoki ; Sano, Tomokazu ; Hirose, Akio ; Shiomi, Yasutomo ; Sasaki, Mitsuo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-3fe34536d4a87665a1b0fa92738b3b18f0c4a2c8698dd06e976e83f1afbf6a183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Additive manufacturing</topic><topic>Alloys</topic><topic>Brittle materials</topic><topic>Chemistry and Materials Science</topic><topic>Densification</topic><topic>Heating</topic><topic>Laser deposition</topic><topic>Materials Science</topic><topic>Mechanical properties</topic><topic>Metallic Materials</topic><topic>Microstructure</topic><topic>Research Paper</topic><topic>Residual stress</topic><topic>Solid Mechanics</topic><topic>Tensile strength</topic><topic>Theoretical and Applied Mechanics</topic><topic>Wear resistance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Miyake, Masashi</creatorcontrib><creatorcontrib>Matsuda, Tomoki</creatorcontrib><creatorcontrib>Sano, Tomokazu</creatorcontrib><creatorcontrib>Hirose, Akio</creatorcontrib><creatorcontrib>Shiomi, Yasutomo</creatorcontrib><creatorcontrib>Sasaki, Mitsuo</creatorcontrib><collection>CrossRef</collection><jtitle>Welding in the world</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Miyake, Masashi</au><au>Matsuda, Tomoki</au><au>Sano, Tomokazu</au><au>Hirose, Akio</au><au>Shiomi, Yasutomo</au><au>Sasaki, Mitsuo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure and mechanical properties of additively manufactured CoCrW alloy using laser metal deposition</atitle><jtitle>Welding in the world</jtitle><stitle>Weld World</stitle><date>2020-08-01</date><risdate>2020</risdate><volume>64</volume><issue>8</issue><spage>1397</spage><epage>1407</epage><pages>1397-1407</pages><issn>0043-2288</issn><eissn>1878-6669</eissn><abstract>We successfully used CoCrW alloy as the feedstock for directly shaping wear-resistant products by additive manufacturing. We present a guideline for forming substantive, high-density, crack-free CoCrW alloys via laser metal deposition (LMD) and evaluated the relationship between the microstructure and mechanical properties. CoCrW alloy with a scale of several tens of cubic centimeters has not been previously reported because the brittle material undergoes cracking due to residual stresses. Densification and crack suppression were achieved by controlling the oxygen concentration in an Ar atmosphere and preheating the base plate to 400 °C. The tensile strength (MPa) of the LMDed CoCrW alloy was 1492 ± 141 along the scan direction, 1464 ± 234 along the overlap direction, and 1359 ± 72 along the build direction. The overlap direction had almost the same strength as the scan direction. In the microtensile test for the overlap direction, the fracture ratio in the overlap region was only 17.4%, and it was found that softening in this region did not contribute to the decrease in strength.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s40194-020-00926-y</doi><tpages>11</tpages></addata></record> |
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| subjects | Additive manufacturing Alloys Brittle materials Chemistry and Materials Science Densification Heating Laser deposition Materials Science Mechanical properties Metallic Materials Microstructure Research Paper Residual stress Solid Mechanics Tensile strength Theoretical and Applied Mechanics Wear resistance |
| title | Microstructure and mechanical properties of additively manufactured CoCrW alloy using laser metal deposition |
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