What happens to the initial planar instability when the thermal gradient is increased during directional solidification
The positive thermal gradient is one of the most important parameters during directional solidification. The increase of the thermal gradient usually stabilizes the planar interface in the steady state analysis. However, in the initial transient range of planar instability, the thermal gradient pres...
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| Veröffentlicht in: | Chinese physics B 2011-10, Vol.20 (10), p.447-451 |
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| creator | Wang, Zhi-Jun (志军 王) Wang, Jin-Cheng (锦程 王) Li, Jun-Jie (俊杰 李) Yang, Gen-Cang (根仓 杨) Zhou, Yao-He (尧和 周) |
| description | The positive thermal gradient is one of the most important parameters during directional solidification. The increase of the thermal gradient usually stabilizes the planar interface in the steady state analysis. However, in the initial transient range of planar instability, the thermal gradient presents complicated effects. Time-dependent analysis shows that the increase of the thermal gradient can enhance both the stabilizing effects and the destabilizing effects on a planar interface. The incubation time first decreases and then increases with the increase of the thermal gradient. Moreover, the initial average wavelength always increases with the thermal gradient increasing, contrary to the effect of the thermal gradient on the steady cellular/dendritic spacing. This reveals the types of spacing adjustment after planar instability. |
| doi_str_mv | 10.1088/1674-1056/20/10/108104 |
| format | Article |
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The increase of the thermal gradient usually stabilizes the planar interface in the steady state analysis. However, in the initial transient range of planar instability, the thermal gradient presents complicated effects. Time-dependent analysis shows that the increase of the thermal gradient can enhance both the stabilizing effects and the destabilizing effects on a planar interface. The incubation time first decreases and then increases with the increase of the thermal gradient. Moreover, the initial average wavelength always increases with the thermal gradient increasing, contrary to the effect of the thermal gradient on the steady cellular/dendritic spacing. This reveals the types of spacing adjustment after planar instability.</description><identifier>ISSN: 1674-1056</identifier><identifier>EISSN: 2058-3834</identifier><identifier>DOI: 10.1088/1674-1056/20/10/108104</identifier><language>eng</language><publisher>IOP Publishing</publisher><subject>Cellular ; Directional solidification ; Instability ; Stability ; Steady state ; Wavelengths ; 不稳定 ; 凝固过程 ; 地温梯度 ; 定时 ; 平面界面 ; 时间依赖 ; 热梯度 ; 稳态分析</subject><ispartof>Chinese physics B, 2011-10, Vol.20 (10), p.447-451</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c341t-a005a8fcfa1044a3da1107afd9802abb5ce77df794ccbbe4b623e2fae514f0f83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/85823A/85823A.jpg</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/1674-1056/20/10/108104/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27923,27924,53909</link.rule.ids></links><search><creatorcontrib>Wang, Zhi-Jun (志军 王)</creatorcontrib><creatorcontrib>Wang, Jin-Cheng (锦程 王)</creatorcontrib><creatorcontrib>Li, Jun-Jie (俊杰 李)</creatorcontrib><creatorcontrib>Yang, Gen-Cang (根仓 杨)</creatorcontrib><creatorcontrib>Zhou, Yao-He (尧和 周)</creatorcontrib><title>What happens to the initial planar instability when the thermal gradient is increased during directional solidification</title><title>Chinese physics B</title><addtitle>Chinese Physics</addtitle><description>The positive thermal gradient is one of the most important parameters during directional solidification. The increase of the thermal gradient usually stabilizes the planar interface in the steady state analysis. However, in the initial transient range of planar instability, the thermal gradient presents complicated effects. Time-dependent analysis shows that the increase of the thermal gradient can enhance both the stabilizing effects and the destabilizing effects on a planar interface. The incubation time first decreases and then increases with the increase of the thermal gradient. Moreover, the initial average wavelength always increases with the thermal gradient increasing, contrary to the effect of the thermal gradient on the steady cellular/dendritic spacing. This reveals the types of spacing adjustment after planar instability.</description><subject>Cellular</subject><subject>Directional solidification</subject><subject>Instability</subject><subject>Stability</subject><subject>Steady state</subject><subject>Wavelengths</subject><subject>不稳定</subject><subject>凝固过程</subject><subject>地温梯度</subject><subject>定时</subject><subject>平面界面</subject><subject>时间依赖</subject><subject>热梯度</subject><subject>稳态分析</subject><issn>1674-1056</issn><issn>2058-3834</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkFtLxDAQhYMouF7-gsQ3X-pOmrRNH0W8geCL4mOZ5rKNdNuaZBH_vam76IsgZAgzfCeZcwg5Y3DJQMolKyuRMSjKZQ5LNh_JQOyRRQ6FzLjkYp8sfqBDchTCG0DJIOcL8vHaYaQdTpMZAo0jjZ2hbnDRYU-nHgf0qQ0RW9e7-Ek_OjN8M6n8OjErj9qZIVIXEqi8wWA01RvvhhXVzhsV3TgkMIy90846hfPghBxY7IM53d3H5OX25vn6Pnt8unu4vnrMFBcsZghQoLTKYrIkkGtkDCq0upaQY9sWylSVtlUtlGpbI9oy5ya3aAomLFjJj8nF9t3Jj-8bE2KzdkGZPjkz4yY0KRdWQMXLOqHlFlV-DMEb20zerdF_NgyaOekZFs0cYpPDbpjWSsJsK3Tj9Kv5k20mbRPP_uD_--N8t1w3Dqv3FO6PktcFy2Vd8y88KJvM</recordid><startdate>20111001</startdate><enddate>20111001</enddate><creator>Wang, Zhi-Jun (志军 王)</creator><creator>Wang, Jin-Cheng (锦程 王)</creator><creator>Li, Jun-Jie (俊杰 李)</creator><creator>Yang, Gen-Cang (根仓 杨)</creator><creator>Zhou, Yao-He (尧和 周)</creator><general>IOP Publishing</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20111001</creationdate><title>What happens to the initial planar instability when the thermal gradient is increased during directional solidification</title><author>Wang, Zhi-Jun (志军 王) ; Wang, Jin-Cheng (锦程 王) ; Li, Jun-Jie (俊杰 李) ; Yang, Gen-Cang (根仓 杨) ; Zhou, Yao-He (尧和 周)</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c341t-a005a8fcfa1044a3da1107afd9802abb5ce77df794ccbbe4b623e2fae514f0f83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Cellular</topic><topic>Directional solidification</topic><topic>Instability</topic><topic>Stability</topic><topic>Steady state</topic><topic>Wavelengths</topic><topic>不稳定</topic><topic>凝固过程</topic><topic>地温梯度</topic><topic>定时</topic><topic>平面界面</topic><topic>时间依赖</topic><topic>热梯度</topic><topic>稳态分析</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Zhi-Jun (志军 王)</creatorcontrib><creatorcontrib>Wang, Jin-Cheng (锦程 王)</creatorcontrib><creatorcontrib>Li, Jun-Jie (俊杰 李)</creatorcontrib><creatorcontrib>Yang, Gen-Cang (根仓 杨)</creatorcontrib><creatorcontrib>Zhou, Yao-He (尧和 周)</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Chinese physics B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Zhi-Jun (志军 王)</au><au>Wang, Jin-Cheng (锦程 王)</au><au>Li, Jun-Jie (俊杰 李)</au><au>Yang, Gen-Cang (根仓 杨)</au><au>Zhou, Yao-He (尧和 周)</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>What happens to the initial planar instability when the thermal gradient is increased during directional solidification</atitle><jtitle>Chinese physics B</jtitle><addtitle>Chinese Physics</addtitle><date>2011-10-01</date><risdate>2011</risdate><volume>20</volume><issue>10</issue><spage>447</spage><epage>451</epage><pages>447-451</pages><issn>1674-1056</issn><eissn>2058-3834</eissn><abstract>The positive thermal gradient is one of the most important parameters during directional solidification. The increase of the thermal gradient usually stabilizes the planar interface in the steady state analysis. However, in the initial transient range of planar instability, the thermal gradient presents complicated effects. Time-dependent analysis shows that the increase of the thermal gradient can enhance both the stabilizing effects and the destabilizing effects on a planar interface. The incubation time first decreases and then increases with the increase of the thermal gradient. Moreover, the initial average wavelength always increases with the thermal gradient increasing, contrary to the effect of the thermal gradient on the steady cellular/dendritic spacing. This reveals the types of spacing adjustment after planar instability.</abstract><pub>IOP Publishing</pub><doi>10.1088/1674-1056/20/10/108104</doi><tpages>5</tpages></addata></record> |
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| ispartof | Chinese physics B, 2011-10, Vol.20 (10), p.447-451 |
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| source | IOP Publishing Journals |
| subjects | Cellular Directional solidification Instability Stability Steady state Wavelengths 不稳定 凝固过程 地温梯度 定时 平面界面 时间依赖 热梯度 稳态分析 |
| title | What happens to the initial planar instability when the thermal gradient is increased during directional solidification |
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