二元多相合金定向凝固带状组织研究进展  

Research Progress of Directionally Solidified Banded Structure of Binary Multi-phase Alloy

作　　者：李钊 彭亚楠 许海 蔡薇 李焕 LI Zhao;PENG Yarnan;XU Hai;CAI Wei;LI Huan(School of Materials Science and Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;School of Information Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;EngineeringResearch Institute,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学材料科学与工程学院,江西赣州341000 [2]江西理工大学信息工程学院,江西赣州341000 [3]江西理工大学工程研究院,江西赣州341000

出　　处：《热加工工艺》2019年第13期14-18,共5页Hot Working Technology

摘　　要：定向凝固形成的带状组织与凝固界面前沿的溶质分布有关,主要受凝固速率、溶质浓度和有效溶质系数等因素的影响。文本主要介绍了定向凝固中几种不同类型的带状组织,解释了其形成的机理;对国内外定向凝固带状组织的研究进展进行归纳总结,指出了目前该研究领域存在的问题,并阐述了未来的研究方向。The formation of band structure during directional solidification is related to the solute distribution at the front of the solidification interface. The band structure is mainly affected by solidification rate, solute concentration and effective solidfication coefficient. Several types of banded structure in directional solidification were mainly introduced and its mechanism was explained. Moreover, the research progress of directional solidified band structure in China and foreign courtries was summarized. The existing problems in this field were points out and the future research direction was expounded.

关 键 词：二元多相合金 定向凝固 带状组织 溶质分布 凝固速率 

分 类 号：TG244[金属学及工艺—铸造]