Microstructure Evolution of Ti-47Al-2Cr-2Nb Alloy in the Liquid-Metal-Cooling （LMC） Directional-Solidification Process
The microstructure evolution of Ti-47Al-2Cr-2Nb alloy was investigated on liquid metal cooling type directional solidified apparatus at high temperature gradient.The analysis shows that it is solidified with primary β cells/dendrites,and then α phase is formed through peritectic reaction.Once the co...
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| Veröffentlicht in: | Journal of Wuhan University of Technology. Materials science edition 2011, Vol.26 (2), p.198-202 |
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| container_title | Journal of Wuhan University of Technology. Materials science edition |
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| creator | XIAO Zhixia ZHENG Lijing WANG Lei YANG Lili ZHANG Hu |
| description | The microstructure evolution of Ti-47Al-2Cr-2Nb alloy was investigated on liquid metal cooling type directional solidified apparatus at high temperature gradient.The analysis shows that it is solidified with primary β cells/dendrites,and then α phase is formed through peritectic reaction.Once the columnar grains grow into the steady state,the lamellar orientation inclined with the angle of 45° to the withdrawal direction is more favored than that with parallel to the withdrawal direction.In addition,α phase grain nucleates from β-interdendrite regions,and grows up to the dendritic trunk.If no other α grain hinders its growth,it would occupy the whole dendrite,or it would stop at the dendritic trunk for the weakened motivating drive in the β dendritic core. |
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Materials Science Edition</addtitle><date>2011</date><risdate>2011</risdate><volume>26</volume><issue>2</issue><spage>198</spage><epage>202</epage><pages>198-202</pages><issn>1000-2413</issn><eissn>1993-0437</eissn><abstract>The microstructure evolution of Ti-47Al-2Cr-2Nb alloy was investigated on liquid metal cooling type directional solidified apparatus at high temperature gradient.The analysis shows that it is solidified with primary β cells/dendrites,and then α phase is formed through peritectic reaction.Once the columnar grains grow into the steady state,the lamellar orientation inclined with the angle of 45° to the withdrawal direction is more favored than that with parallel to the withdrawal direction.In addition,α phase grain nucleates from β-interdendrite regions,and grows up to the dendritic trunk.If no other α grain hinders its growth,it would occupy the whole dendrite,or it would stop at the dendritic trunk for the weakened motivating drive in the β dendritic core.</abstract></addata></record> |
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| identifier | ISSN: 1000-2413 |
| ispartof | Journal of Wuhan University of Technology. Materials science edition, 2011, Vol.26 (2), p.198-202 |
| issn | 1000-2413 1993-0437 |
| language | eng |
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| source | SpringerLink Journals; Alma/SFX Local Collection |
| subjects | LMC 凝固过程 晶粒生长 液体金属 组织演变 金合金 |
| title | Microstructure Evolution of Ti-47Al-2Cr-2Nb Alloy in the Liquid-Metal-Cooling （LMC） Directional-Solidification Process |
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