Time-Resolved In Situ Measurements During Rapid Alloy Solidification: Experimental Insight for Additive Manufacturing
Additive manufacturing (AM) of metals and alloys is becoming a pervasive technology in both research and industrial environments, though significant challenges remain before widespread implementation of AM can be realized. In situ investigations of rapid alloy solidification with high spatial and te...
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| Veröffentlicht in: | JOM (1989) 2016-03, Vol.68 (3), p.985-999 |
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| creator | McKeown, Joseph T. Zweiacker, Kai Liu, Can Coughlin, Daniel R. Clarke, Amy J. Baldwin, J. Kevin Gibbs, John W. Roehling, John D. Imhoff, Seth D. Gibbs, Paul J. Tourret, Damien Wiezorek, Jörg M. K. Campbell, Geoffrey H. |
| description | Additive manufacturing (AM) of metals and alloys is becoming a pervasive technology in both research and industrial environments, though significant challenges remain before widespread implementation of AM can be realized. In situ investigations of rapid alloy solidification with high spatial and temporal resolutions can provide unique experimental insight into microstructure evolution and kinetics that are relevant for AM processing. Hypoeutectic thin-film Al–Cu and Al–Si alloys were investigated using dynamic transmission electron microscopy to monitor pulsed-laser-induced rapid solidification across microsecond timescales. Solid–liquid interface velocities measured from time-resolved images revealed accelerating solidification fronts in both alloys. The observed microstructure evolution, solidification product, and presence of a morphological instability at the solid–liquid interface in the Al–4 at.%Cu alloy are related to the measured interface velocities and small differences in composition that affect the thermophysical properties of the alloys. These time-resolved in situ measurements can inform and validate predictive modeling efforts for AM. |
| doi_str_mv | 10.1007/s11837-015-1793-x |
| format | Article |
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Kevin ; Gibbs, John W. ; Roehling, John D. ; Imhoff, Seth D. ; Gibbs, Paul J. ; Tourret, Damien ; Wiezorek, Jörg M. K. ; Campbell, Geoffrey H.</creator><creatorcontrib>McKeown, Joseph T. ; Zweiacker, Kai ; Liu, Can ; Coughlin, Daniel R. ; Clarke, Amy J. ; Baldwin, J. Kevin ; Gibbs, John W. ; Roehling, John D. ; Imhoff, Seth D. ; Gibbs, Paul J. ; Tourret, Damien ; Wiezorek, Jörg M. K. ; Campbell, Geoffrey H. ; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States) ; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</creatorcontrib><description>Additive manufacturing (AM) of metals and alloys is becoming a pervasive technology in both research and industrial environments, though significant challenges remain before widespread implementation of AM can be realized. In situ investigations of rapid alloy solidification with high spatial and temporal resolutions can provide unique experimental insight into microstructure evolution and kinetics that are relevant for AM processing. Hypoeutectic thin-film Al–Cu and Al–Si alloys were investigated using dynamic transmission electron microscopy to monitor pulsed-laser-induced rapid solidification across microsecond timescales. Solid–liquid interface velocities measured from time-resolved images revealed accelerating solidification fronts in both alloys. The observed microstructure evolution, solidification product, and presence of a morphological instability at the solid–liquid interface in the Al–4 at.%Cu alloy are related to the measured interface velocities and small differences in composition that affect the thermophysical properties of the alloys. These time-resolved in situ measurements can inform and validate predictive modeling efforts for AM.</description><identifier>ISSN: 1047-4838</identifier><identifier>EISSN: 1543-1851</identifier><identifier>DOI: 10.1007/s11837-015-1793-x</identifier><identifier>CODEN: JOMMER</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Additive manufacturing ; Alloy solidification ; Cameras ; Chemistry/Food Science ; Earth Sciences ; Engineering ; Environment ; Equilibrium ; Experiments ; Lasers ; MATERIALS SCIENCE ; Measurement ; Microstructure ; Physics ; Silicon nitride ; Solids ; Studies ; Thin films ; Transmission electron microscopy ; Velocity</subject><ispartof>JOM (1989), 2016-03, Vol.68 (3), p.985-999</ispartof><rights>The Minerals, Metals & Materials Society 2016</rights><rights>Copyright Springer Science & Business Media Mar 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c386t-afd5a02841364bc0590e5cea047c54e5c894a02e51feceace0bdd878818e977d3</citedby><cites>FETCH-LOGICAL-c386t-afd5a02841364bc0590e5cea047c54e5c894a02e51feceace0bdd878818e977d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11837-015-1793-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11837-015-1793-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1258521$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>McKeown, Joseph T.</creatorcontrib><creatorcontrib>Zweiacker, Kai</creatorcontrib><creatorcontrib>Liu, Can</creatorcontrib><creatorcontrib>Coughlin, Daniel R.</creatorcontrib><creatorcontrib>Clarke, Amy J.</creatorcontrib><creatorcontrib>Baldwin, J. 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In situ investigations of rapid alloy solidification with high spatial and temporal resolutions can provide unique experimental insight into microstructure evolution and kinetics that are relevant for AM processing. Hypoeutectic thin-film Al–Cu and Al–Si alloys were investigated using dynamic transmission electron microscopy to monitor pulsed-laser-induced rapid solidification across microsecond timescales. Solid–liquid interface velocities measured from time-resolved images revealed accelerating solidification fronts in both alloys. The observed microstructure evolution, solidification product, and presence of a morphological instability at the solid–liquid interface in the Al–4 at.%Cu alloy are related to the measured interface velocities and small differences in composition that affect the thermophysical properties of the alloys. 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| identifier | ISSN: 1047-4838 |
| ispartof | JOM (1989), 2016-03, Vol.68 (3), p.985-999 |
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| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Additive manufacturing Alloy solidification Cameras Chemistry/Food Science Earth Sciences Engineering Environment Equilibrium Experiments Lasers MATERIALS SCIENCE Measurement Microstructure Physics Silicon nitride Solids Studies Thin films Transmission electron microscopy Velocity |
| title | Time-Resolved In Situ Measurements During Rapid Alloy Solidification: Experimental Insight for Additive Manufacturing |
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