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of electrolytic low titanium Al alloys were investigated by means of the wedge-shaped sample, the directional solidification and the rapid solidification ribbon. The results show that the coarse columnar... the cooling rate is larger than 105 ℃/s, the grain size is decreased to 0.1-10 μm, the grain refinement is resulted from the larger cooling velocities mainly. After directional solidification, the equiaxed......
Solidification simulation of Al-Mg-Er alloys using CALPHAD method ZHANG Li-gang(章立钢)1, LIU Li-bin(刘立斌)1, 2, HUANG Guo-xing(黄国幸)1, JIA Bing-ran(贾兵然)1 1. School of Materials Science...; Abstract: With CALPHAD(calculation of phase diagrams) method, the solidification paths of several Al-rich Al-Mg-Er alloys were......
. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China Received 6 August 2013; accepted 4 November 2014 Abstract: Bridgman-type directional solidification... the other applied TiAl-based alloys in previous studies. Key words: TiAl alloy; directional solidification; growth rate; diameter; phase transition 1 Introduction TiAl-based alloys are highly promising......
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Received 5 June 2014; accepted 9 October 2014 Abstract: The solid-liquid interfacial morphology evolution was investigated in directional solidification (DS) of Al-1.5%Cu alloy (mass fraction... into consideration in calculation. Finally, it is speculated that the dendrite to cell transition would occur at the minimum tip radius. Key words: Al-Cu alloy; dendrite to cell transition; directional solidification......
and Materials,University of Science and Technology Beijing, Beijing 100083, China Received 9 September 2011; accepted 28 December 2011 Abstract: The double directional solidification (DS) technique... achieved due to the complete peritectic transformation during directional solidification of the alloys with the dendritic solid/liquid interface. The PST crystals with aligned lamellar boundaries only......
. In directional solidification equipment with high temperature gradient, single crystal specimens of DZ417G alloy were prepared successfully by the modified Bridgeman method with spiral grain selector... the deviation of preferred orientation. Key words: nickel-base superalloy; directional solidification; single crystal superalloy; crystal orientation; spiral grain selector 1 Introduction Aero-engine turbine......
reconstruction; solidification microstructure; directional solidifi-cation; multiphase alloy; [全文内容正在添加中] ......
of morphological instability for a significant range of solute concentrations in the directional solidification. Define e=U/V, which measures the amplitude U of the lateral oscillations of fluid.... If any local part on the globular crystal interface was treated as flat interface, the stability analysis of Schulze and Davis[15] on directional solidification can be used as a good approximate analysis......
, LUAN et al [10] studied the mechanical properties of Ti-16Al-12Nb and Ti-16Al- 12Nb-3Cr-Mo alloys using the CaO crucible for directional solidification, and pointed out that the fracture type... mechanical properties during directional solidification (DS). Cold crucible directional solidification is a newly developed technique to directionally solidify TiAl alloys without contamination [13......
