Time-dependence of the alpha to epsilon phase transformation in iron
Iron was ramp-compressed over timescales of 3 ≤ t(ns) ≤ 300 to study the time-dependence of the α→ε (bcc→hcp) phase transformation. Onset stresses (σα→ε) for the transformation ∼14.8-38.4 GPa were determined through laser and magnetic ramp-compression techniques where the transition strain-rate was...
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| Veröffentlicht in: | Journal of applied physics 2013-12, Vol.114 (22) |
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| creator | Smith, R. F. Eggert, J. H. Swift, D. C. Wang, J. Duffy, T. S. Braun, D. G. Rudd, R. E. Reisman, D. B. Davis, J.-P. Knudson, M. D. Collins, G. W. |
| description | Iron was ramp-compressed over timescales of 3 ≤ t(ns) ≤ 300 to study the time-dependence of the α→ε (bcc→hcp) phase transformation. Onset stresses (σα→ε) for the transformation ∼14.8-38.4 GPa were determined through laser and magnetic ramp-compression techniques where the transition strain-rate was varied between 106 ≤μ̇α→ε(s−1) ≤ 5×108. We find σα→ε= 10.8 + 0.55 ln(μ̇α→ε) for μ̇α→ε 106/s. This μ̇ response is quite similar to recent results on incipient plasticity in Fe [Smith et al., J. Appl. Phys. 110, 123515 (2011)] suggesting that under high rate ramp compression the α→ε phase transition and plastic deformation occur through similar mechanisms, e.g., the rate limiting step for μ̇ > 106/s is due to phonon scattering from defects moving to relieve strain. We show that over-pressurization of equilibrium phase boundaries is a common feature exhibited under high strain-rate compression of many materials encompassing many orders of magnitude of strain-rate. |
| doi_str_mv | 10.1063/1.4839655 |
| format | Article |
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F. ; Eggert, J. H. ; Swift, D. C. ; Wang, J. ; Duffy, T. S. ; Braun, D. G. ; Rudd, R. E. ; Reisman, D. B. ; Davis, J.-P. ; Knudson, M. D. ; Collins, G. W.</creator><creatorcontrib>Smith, R. F. ; Eggert, J. H. ; Swift, D. C. ; Wang, J. ; Duffy, T. S. ; Braun, D. G. ; Rudd, R. E. ; Reisman, D. B. ; Davis, J.-P. ; Knudson, M. D. ; Collins, G. W. ; Princeton Univ., NJ (United States)</creatorcontrib><description>Iron was ramp-compressed over timescales of 3 ≤ t(ns) ≤ 300 to study the time-dependence of the α→ε (bcc→hcp) phase transformation. Onset stresses (σα→ε) for the transformation ∼14.8-38.4 GPa were determined through laser and magnetic ramp-compression techniques where the transition strain-rate was varied between 106 ≤μ̇α→ε(s−1) ≤ 5×108. We find σα→ε= 10.8 + 0.55 ln(μ̇α→ε) for μ̇α→ε < 106/s and σα→ε= 1.15(μ̇α→ε)0.18 for μ̇α→ε > 106/s. This μ̇ response is quite similar to recent results on incipient plasticity in Fe [Smith et al., J. Appl. Phys. 110, 123515 (2011)] suggesting that under high rate ramp compression the α→ε phase transition and plastic deformation occur through similar mechanisms, e.g., the rate limiting step for μ̇ > 106/s is due to phonon scattering from defects moving to relieve strain. We show that over-pressurization of equilibrium phase boundaries is a common feature exhibited under high strain-rate compression of many materials encompassing many orders of magnitude of strain-rate.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.4839655</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Alpha iron ; Applied physics ; Compressing ; Constraining ; Deformation mechanisms ; Epsilon phase (crystals) ; Iron ; Lasers ; MATERIALS SCIENCE ; Phase boundaries ; Phase transformations ; Phase transitions ; Plastic deformation ; Pressurization ; Strain rate ; Time dependence ; Transformations</subject><ispartof>Journal of applied physics, 2013-12, Vol.114 (22)</ispartof><rights>2013 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c418t-b67e23fa13ae6e44fbf88db30c5cc132296725318944eba9dec1716560b884f73</citedby><cites>FETCH-LOGICAL-c418t-b67e23fa13ae6e44fbf88db30c5cc132296725318944eba9dec1716560b884f73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,315,782,786,887,27933,27934</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1337783$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Smith, R. F.</creatorcontrib><creatorcontrib>Eggert, J. H.</creatorcontrib><creatorcontrib>Swift, D. C.</creatorcontrib><creatorcontrib>Wang, J.</creatorcontrib><creatorcontrib>Duffy, T. S.</creatorcontrib><creatorcontrib>Braun, D. G.</creatorcontrib><creatorcontrib>Rudd, R. E.</creatorcontrib><creatorcontrib>Reisman, D. B.</creatorcontrib><creatorcontrib>Davis, J.-P.</creatorcontrib><creatorcontrib>Knudson, M. D.</creatorcontrib><creatorcontrib>Collins, G. W.</creatorcontrib><creatorcontrib>Princeton Univ., NJ (United States)</creatorcontrib><title>Time-dependence of the alpha to epsilon phase transformation in iron</title><title>Journal of applied physics</title><description>Iron was ramp-compressed over timescales of 3 ≤ t(ns) ≤ 300 to study the time-dependence of the α→ε (bcc→hcp) phase transformation. Onset stresses (σα→ε) for the transformation ∼14.8-38.4 GPa were determined through laser and magnetic ramp-compression techniques where the transition strain-rate was varied between 106 ≤μ̇α→ε(s−1) ≤ 5×108. We find σα→ε= 10.8 + 0.55 ln(μ̇α→ε) for μ̇α→ε < 106/s and σα→ε= 1.15(μ̇α→ε)0.18 for μ̇α→ε > 106/s. This μ̇ response is quite similar to recent results on incipient plasticity in Fe [Smith et al., J. Appl. Phys. 110, 123515 (2011)] suggesting that under high rate ramp compression the α→ε phase transition and plastic deformation occur through similar mechanisms, e.g., the rate limiting step for μ̇ > 106/s is due to phonon scattering from defects moving to relieve strain. We show that over-pressurization of equilibrium phase boundaries is a common feature exhibited under high strain-rate compression of many materials encompassing many orders of magnitude of strain-rate.</description><subject>Alpha iron</subject><subject>Applied physics</subject><subject>Compressing</subject><subject>Constraining</subject><subject>Deformation mechanisms</subject><subject>Epsilon phase (crystals)</subject><subject>Iron</subject><subject>Lasers</subject><subject>MATERIALS SCIENCE</subject><subject>Phase boundaries</subject><subject>Phase transformations</subject><subject>Phase transitions</subject><subject>Plastic deformation</subject><subject>Pressurization</subject><subject>Strain rate</subject><subject>Time dependence</subject><subject>Transformations</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNpd0E1LAzEQBuAgCtbqwX-w6EUPWzOb3XwcpX5CwUs9h2x2QrdskzVJD_57t7QnYWCY4WFgXkJugS6AcvYEi1oyxZvmjMyASlWKpqHnZEZpBaVUQl2Sq5S2lAJMbkZe1v0Oyw5H9B16i0VwRd5gYYZxY4ocChxTPwRfTGPCIkfjkwtxZ3I_LfupYvDX5MKZIeHNqc_J99vrevlRrr7eP5fPq9LWIHPZcoEVcwaYQY517VonZdcyahtrgVWV4qJqGEhV19ga1aEFAbzhtJWydoLNyd3xbki518n2Ge3GBu_RZg2MCSHZhB6OaIzhZ48p612fLA6D8Rj2SQMX0AhWKz7R-390G_bRTy_oCiohuFDicPDxqGwMKUV0eoz9zsRfDVQfQtegT6GzP7PqcYY</recordid><startdate>20131214</startdate><enddate>20131214</enddate><creator>Smith, R. F.</creator><creator>Eggert, J. H.</creator><creator>Swift, D. C.</creator><creator>Wang, J.</creator><creator>Duffy, T. S.</creator><creator>Braun, D. G.</creator><creator>Rudd, R. E.</creator><creator>Reisman, D. B.</creator><creator>Davis, J.-P.</creator><creator>Knudson, M. D.</creator><creator>Collins, G. W.</creator><general>American Institute of Physics</general><general>American Institute of Physics (AIP)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7U5</scope><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20131214</creationdate><title>Time-dependence of the alpha to epsilon phase transformation in iron</title><author>Smith, R. F. ; Eggert, J. H. ; Swift, D. C. ; Wang, J. ; Duffy, T. S. ; Braun, D. G. ; Rudd, R. E. ; Reisman, D. B. ; Davis, J.-P. ; Knudson, M. D. ; Collins, G. W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c418t-b67e23fa13ae6e44fbf88db30c5cc132296725318944eba9dec1716560b884f73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Alpha iron</topic><topic>Applied physics</topic><topic>Compressing</topic><topic>Constraining</topic><topic>Deformation mechanisms</topic><topic>Epsilon phase (crystals)</topic><topic>Iron</topic><topic>Lasers</topic><topic>MATERIALS SCIENCE</topic><topic>Phase boundaries</topic><topic>Phase transformations</topic><topic>Phase transitions</topic><topic>Plastic deformation</topic><topic>Pressurization</topic><topic>Strain rate</topic><topic>Time dependence</topic><topic>Transformations</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Smith, R. F.</creatorcontrib><creatorcontrib>Eggert, J. H.</creatorcontrib><creatorcontrib>Swift, D. C.</creatorcontrib><creatorcontrib>Wang, J.</creatorcontrib><creatorcontrib>Duffy, T. S.</creatorcontrib><creatorcontrib>Braun, D. G.</creatorcontrib><creatorcontrib>Rudd, R. E.</creatorcontrib><creatorcontrib>Reisman, D. B.</creatorcontrib><creatorcontrib>Davis, J.-P.</creatorcontrib><creatorcontrib>Knudson, M. D.</creatorcontrib><creatorcontrib>Collins, G. W.</creatorcontrib><creatorcontrib>Princeton Univ., NJ (United States)</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Smith, R. F.</au><au>Eggert, J. H.</au><au>Swift, D. C.</au><au>Wang, J.</au><au>Duffy, T. S.</au><au>Braun, D. G.</au><au>Rudd, R. E.</au><au>Reisman, D. B.</au><au>Davis, J.-P.</au><au>Knudson, M. D.</au><au>Collins, G. W.</au><aucorp>Princeton Univ., NJ (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Time-dependence of the alpha to epsilon phase transformation in iron</atitle><jtitle>Journal of applied physics</jtitle><date>2013-12-14</date><risdate>2013</risdate><volume>114</volume><issue>22</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><abstract>Iron was ramp-compressed over timescales of 3 ≤ t(ns) ≤ 300 to study the time-dependence of the α→ε (bcc→hcp) phase transformation. Onset stresses (σα→ε) for the transformation ∼14.8-38.4 GPa were determined through laser and magnetic ramp-compression techniques where the transition strain-rate was varied between 106 ≤μ̇α→ε(s−1) ≤ 5×108. We find σα→ε= 10.8 + 0.55 ln(μ̇α→ε) for μ̇α→ε < 106/s and σα→ε= 1.15(μ̇α→ε)0.18 for μ̇α→ε > 106/s. This μ̇ response is quite similar to recent results on incipient plasticity in Fe [Smith et al., J. Appl. Phys. 110, 123515 (2011)] suggesting that under high rate ramp compression the α→ε phase transition and plastic deformation occur through similar mechanisms, e.g., the rate limiting step for μ̇ > 106/s is due to phonon scattering from defects moving to relieve strain. We show that over-pressurization of equilibrium phase boundaries is a common feature exhibited under high strain-rate compression of many materials encompassing many orders of magnitude of strain-rate.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4839655</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Alpha iron Applied physics Compressing Constraining Deformation mechanisms Epsilon phase (crystals) Iron Lasers MATERIALS SCIENCE Phase boundaries Phase transformations Phase transitions Plastic deformation Pressurization Strain rate Time dependence Transformations |
| title | Time-dependence of the alpha to epsilon phase transformation in iron |
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