欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
对利用非自耗电弧熔炼设备得到的Ti-46Al,Ti-46Al-0.3B,Ti-46Al-0.5B,Ti-46Al-2Fe,Ti-46Al-2Fe-0.3B和Ti-46Al-2Fe-0.5B合金的凝固组织进行了研究。结果表明,铸态TiAl基合金的宏观组织为典型的柱状晶组织,而且平均柱状晶直径随着Fe和B元素的加入显著减小。其中,Ti-46Al-2Fe-0.5B合金的柱状晶直径最小。B元素可以显著地细化TiAl基合金的柱状晶组织和枝晶组织,这主要是由于B元素的添加可以显著增加固液界面前沿的成分过冷度从而细化TiAl基合金的凝固组织。而且,Fe元素的添加还可以显著地提高B元素对TiAl基合金的柱状晶组织的细化效果。
英文摘要：
The microstructures of Ti-46Al, Ti-46Al-0.3B, Ti-46Al-0.5B, Ti-46Al-2Fe, Ti-46Al-2Fe-0.3B, and Ti-46Al-2Fe-0.5B alloys solidified on water-cooled copper crucible were investigated. It is found that the as-cast alloys possess a typical columnar structure, and the mean diameters of the columnar grains decrease significantly as the addition of Fe or B. The mean columnar diameter in Ti-46Al-2Fe-0.5B is found to be the smallest among these alloys. B addition can increase the constitutional supercooling in front of the solid-liquid interface, which refines the columnar structure and the dendritic structure. Moreover, Fe addition can enhance the refining effect of boron on the columnar structure of TiAl-based alloys.
同期刊论文项目
同项目期刊论文
Secondary dendrite arm migration caused by temperature gradient zone melting during peritectic solid
CONVECTION EFFECTS AND BANDING STRUCTURE FORMATION MECHANISM DURING DIRECTIONAL SOLIDIFICATION OF PE
An analysis of non-equilibrium peritectic reaction driven by solute diffusion under a temperature gr
Preparation of the initial solid-liquid interface and melt in directional solidification of Al-18 at
Directional Solidification of TiAl-Based Alloys: Determination of the Primary Phase in Ti-50Al-5Nb A
Influence of thermal stabilization on the solute concentration of the melt in directional solidifica
Characterization of hydrogen-induced structural changes in Zr-based bulk metallic glasses using posi
Influence of columnar grain boundary on fracture behavior of as-cast fully lamellar Ti-46Al-0.5W-0.5
Investigation of melt hydrogenation on the microstructure and deformation behavior of Ti-6Al-4V allo
Modelling generation mechanism of defects during permanent mould centrifugal casting process of TiAl
Jianglei Fan, Xinzhong Li, Yanqing Su, Jingjie Guo, Hengzhi Fu. Dependency of microhardness on solid
Yanqing Su, Dongmei Liu, Xinzhong Li, Liangshu Luo, Jingjie Guo, HengzhiFu. Preparation of theinitia
Jianglei Fan, Xinzhong Li, Yanqing Su,Jingjie Guo, Hengzhi Fu.The microstructure parameters and micr
Li Xin-zhong, Liu Dong-mei, Su Yan-qing, Guo Jin-gjie, Fu Heng-zhi. Phase-field simulation of lamell
Morphological characteristics of triple junction region and process of the peritectic reaction durin
Su Yanqing, Liu Dongmei, Li Xinzhong, Luo Liangshun, Guo Jingjie, Fu Hengzhi. Microstructure evoluti
期刊信息
位置：