Cr−Mo solid solutions forced by high-energy ball milling
Mixtures of Cr and Mo elemental powders, with the nominal compositions Cr25Mo75, Cr50Mo50, and Cr75Mo25, are processed by high-energy ball milling at ambient temperature. Milling is observed to force the mixing of the immiscible bcc elements Cr and Mo into solid solutions. The lattice parameter of t...
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| Veröffentlicht in: | Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2004-03, Vol.35 (13), p.1105-1111 |
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| container_title | Metallurgical and materials transactions. A, Physical metallurgy and materials science |
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| creator | Hahn, J. D. Wu, Fang Bellon, P. |
| description | Mixtures of Cr and Mo elemental powders, with the nominal compositions Cr25Mo75, Cr50Mo50, and Cr75Mo25, are processed by high-energy ball milling at ambient temperature. Milling is observed to force the mixing of the immiscible bcc elements Cr and Mo into solid solutions. The lattice parameter of these solid solutions, measured by X-ray diffraction (XRD), displays the expected positive deviation from Vegard's law. These deviations are compared to the ones predicted by Eshelby's inclusion model for dilute alloys. The conventional Williamson-Hall approach is shown to fail to determine the grain size in as-milled samples, probably due to the high density of dislocations. Annealing at 700 °C for 10 hours under argon leads to a large reduction in structural defect density, without inducing any significant decomposition. The mixing measured in Cr−Mo is discussed in the broader context of the mechanical mixing forced by ball milling in moderately immiscible systems. |
| doi_str_mv | 10.1007/s11661-004-1013-8 |
| format | Article |
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D. ; Wu, Fang ; Bellon, P.</creator><creatorcontrib>Hahn, J. D. ; Wu, Fang ; Bellon, P.</creatorcontrib><description>Mixtures of Cr and Mo elemental powders, with the nominal compositions Cr25Mo75, Cr50Mo50, and Cr75Mo25, are processed by high-energy ball milling at ambient temperature. Milling is observed to force the mixing of the immiscible bcc elements Cr and Mo into solid solutions. The lattice parameter of these solid solutions, measured by X-ray diffraction (XRD), displays the expected positive deviation from Vegard's law. These deviations are compared to the ones predicted by Eshelby's inclusion model for dilute alloys. The conventional Williamson-Hall approach is shown to fail to determine the grain size in as-milled samples, probably due to the high density of dislocations. Annealing at 700 °C for 10 hours under argon leads to a large reduction in structural defect density, without inducing any significant decomposition. The mixing measured in Cr−Mo is discussed in the broader context of the mechanical mixing forced by ball milling in moderately immiscible systems.</description><identifier>ISSN: 1073-5623</identifier><identifier>EISSN: 1543-1940</identifier><identifier>DOI: 10.1007/s11661-004-1013-8</identifier><language>eng</language><publisher>New York: Springer Nature B.V</publisher><subject>Ambient temperature ; Argon ; Ball milling ; Chromium ; Deviation ; Dislocation density ; Grain size ; Miscibility ; Molybdenum ; Solid solutions ; Temperature</subject><ispartof>Metallurgical and materials transactions. 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A, Physical metallurgy and materials science</title><description>Mixtures of Cr and Mo elemental powders, with the nominal compositions Cr25Mo75, Cr50Mo50, and Cr75Mo25, are processed by high-energy ball milling at ambient temperature. Milling is observed to force the mixing of the immiscible bcc elements Cr and Mo into solid solutions. The lattice parameter of these solid solutions, measured by X-ray diffraction (XRD), displays the expected positive deviation from Vegard's law. These deviations are compared to the ones predicted by Eshelby's inclusion model for dilute alloys. The conventional Williamson-Hall approach is shown to fail to determine the grain size in as-milled samples, probably due to the high density of dislocations. Annealing at 700 °C for 10 hours under argon leads to a large reduction in structural defect density, without inducing any significant decomposition. The mixing measured in Cr−Mo is discussed in the broader context of the mechanical mixing forced by ball milling in moderately immiscible systems.</description><subject>Ambient temperature</subject><subject>Argon</subject><subject>Ball milling</subject><subject>Chromium</subject><subject>Deviation</subject><subject>Dislocation density</subject><subject>Grain size</subject><subject>Miscibility</subject><subject>Molybdenum</subject><subject>Solid solutions</subject><subject>Temperature</subject><issn>1073-5623</issn><issn>1543-1940</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNotkMtOwzAQRS0EEqXwAewisTbM2Ikf7FDFSypiA2vLjp02VRoXO1n0D1jziXwJqcrmztXoaEY6hFwj3CKAvMuIQiAFKCkCcqpOyAyrklPUJZxOHSSnlWD8nFzkvAEA1FzMyP0i_X7_vMUix671hxyHNva5aGKqgy_cvli3qzUNfUirfeFs1xXbtuvafnVJzhrb5XD1P-fk8-nxY_FCl-_Pr4uHJa1RqYEqVrGmYspz22gZpGdeIzbSemXrytXcCVmWSotpxRjn6LywTuqAUkOtgc_JzfHuLsWvMeTBbOKY-umlYUKUQmpW8YnCI1WnmHMKjdmldmvT3iCYgyJzVGQmReagyCj-BzCYWOU</recordid><startdate>20040301</startdate><enddate>20040301</enddate><creator>Hahn, J. 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A, Physical metallurgy and materials science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hahn, J. D.</au><au>Wu, Fang</au><au>Bellon, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cr−Mo solid solutions forced by high-energy ball milling</atitle><jtitle>Metallurgical and materials transactions. A, Physical metallurgy and materials science</jtitle><date>2004-03-01</date><risdate>2004</risdate><volume>35</volume><issue>13</issue><spage>1105</spage><epage>1111</epage><pages>1105-1111</pages><issn>1073-5623</issn><eissn>1543-1940</eissn><abstract>Mixtures of Cr and Mo elemental powders, with the nominal compositions Cr25Mo75, Cr50Mo50, and Cr75Mo25, are processed by high-energy ball milling at ambient temperature. Milling is observed to force the mixing of the immiscible bcc elements Cr and Mo into solid solutions. The lattice parameter of these solid solutions, measured by X-ray diffraction (XRD), displays the expected positive deviation from Vegard's law. These deviations are compared to the ones predicted by Eshelby's inclusion model for dilute alloys. The conventional Williamson-Hall approach is shown to fail to determine the grain size in as-milled samples, probably due to the high density of dislocations. Annealing at 700 °C for 10 hours under argon leads to a large reduction in structural defect density, without inducing any significant decomposition. The mixing measured in Cr−Mo is discussed in the broader context of the mechanical mixing forced by ball milling in moderately immiscible systems.</abstract><cop>New York</cop><pub>Springer Nature B.V</pub><doi>10.1007/s11661-004-1013-8</doi><tpages>7</tpages></addata></record> |
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| issn | 1073-5623 1543-1940 |
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| subjects | Ambient temperature Argon Ball milling Chromium Deviation Dislocation density Grain size Miscibility Molybdenum Solid solutions Temperature |
| title | Cr−Mo solid solutions forced by high-energy ball milling |
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