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：
采用变截面形状的坩埚,研究DZ417G高温合金在不同拉速下定向凝固组织的变化情况,发现在低于150μm/s的拉速下,变截面对凝固组织影响很小,凝固组织生长具有良好的延续性,变截面处杂晶的形成起源于小截面段枝晶尖端破碎从而产生杂晶,截面变大时促进了杂晶的生长;在250μm/s的拉速下,变截面处存在足够大的横向温度梯度,凝固组织在变截面处产生杂晶。
英文摘要：
The microstructure evolution of directional solidified DZ417G super alloy under different drawing speeds was researched by using variable cross-section crucible,it was found that the cross-section variation had little impact on solidified microstructure at the drawing speed less than 150 μm/s,its structure was of good continuity.Because the cutting edge of branch crystal was broken in small section,and then stray crystal was formed.The larger cross-section promoted the stray crystal growth.At the drawing speed of 250 μm/s,there was large enough transverse temperature gradient,and stray grain was formed in the cross-section.
同期刊论文项目
同项目期刊论文
Experimental evidence for liquid/solid interface instability caused by the stress in the solid durin
Investigation of thermoelectric magnetic convection and its effect on solidification structure durin
Effect of a high magnetic field on the morphological instability and irregularity of the interface o
Effect of a high magnetic field on the morphology and magnetic properties of the MnBi compound durin
Enhancement on the faceted growth and the coarsening of the MnBi primary phase during the directiona
Morphological instabilities and alignment of lamellar eutectics during directional solidification un
EFFECT OF HORIZONTAL MAGNETIC FIELD ON THE MICROSTRUCTURE OF DIRECTIONALLY SOLIDIFIED Ni-BASED SUPER
Columnar-to-equiaxed transitions in al-based alloys during directional solidification under a high m
Effect of a low axial magnetic field on the primary Al(2)Cu phase growth in a directionally solidifi
EFFECT OF LONGITUDINAL MAGNETIC FIELD ON THE MICROSTRUCTURE OF DIRECTIONALLY SOLIDIFIED Al-40%Cu HYP
Morphological instability of interface, cell and dendrite during directional solidification under st
Influence of an axial uniform magnetic field on the solid/liquid interface curvature and macrosegreg
Effects of Thermoelectric Magnetic Convection on the Solidification Structure During Directional Sol
期刊信息
位置：