Microstructure and compressive properties of directionally solidified Er-bearing TiAl alloy using cold crucible

2016 ◽  
Vol 99 ◽  
pp. 10-20 ◽  
Author(s):  
Qiang Wang ◽  
Hongsheng Ding ◽  
Hailong Zhang ◽  
Shiqiu Liu ◽  
Ruirun Chen ◽  
...  
Keyword(s):  
Tial Alloy ◽  
Cold Crucible ◽  
Directionally Solidified ◽  
Compressive Properties

Heat transfer and macrostructure formation of Nb containing TiAl alloy directionally solidified by square cold crucible

2013 ◽  
Vol 42 ◽  
pp. 184-191 ◽  
Author(s):  
Jieren Yang ◽  
Ruirun Chen ◽  
Hongsheng Ding ◽  
Jingjie Guo ◽  
Jiecai Han ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Tial Alloy ◽  
Cold Crucible ◽  
Directionally Solidified

Optimization of electromagnetic energy in cold crucible used for directional solidification of TiAl alloy

Energy ◽  
2018 ◽  
Vol 161 ◽  
pp. 143-155 ◽  
Author(s):  
Jieren Yang ◽  
Ruirun Chen ◽  
Yanqing Su ◽  
Hongsheng Ding ◽  
Jingjie Guo ◽  
...  
Keyword(s):  
Directional Solidification ◽  
Tial Alloy ◽  
Electromagnetic Energy ◽  
Cold Crucible

Investigation of Compressive and Damage Mechanisms in Fully Lamellar TiAl-Based Alloy

2012 ◽  
Vol 487 ◽  
pp. 416-422
Author(s):  
Bin Tang ◽  
Chuan Jing Chen ◽  
Zi Gong Xue ◽  
Chun Jing Wu ◽  
Shuang Shou Li
Keyword(s):  
Mechanical Property ◽  
Shear Stress ◽  
Cleavage Fracture ◽  
Tial Alloy ◽  
Fracture Mechanisms ◽  
Maximum Strain ◽  
Compression Tests ◽  
Compressive Properties ◽  
Micro Cracks ◽  
Fully Lamellar

The compressive Properties and the effect of anti-damage were studied by means of compression and pre-compression damage tests. The study indicated that：The fracture mechanisms of compression tests were quasi-cleavage fracture attributed to the normal stress and shear stress. Fracture strength, the maximum strain and the fracture energy were reduced in varying degrees, and the damage was intensified while increasing preload value. The mechanical property of the TiAl alloy degrades because of the present of the cracks, and large amount of micro-cracks appear on the surface firstly.

MICROSTRUCTURE EVOLUTION OF Ti44Al6Nb ALLOY DIRECTIONALLY SOLIDIFIED WITH COLD CRUCIBLE

2013 ◽  
Vol 49 (11) ◽  
pp. 1356
Author(s):  
Ruirun CHEN ◽  
Jichao WANG ◽  
Tengfei MA ◽  
Jingjie GUO ◽  
Hongsheng DING ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Cold Crucible ◽  
Directionally Solidified

Effect of V on the microstructure and brittle-to-ductile transition of directionally solidified high-Nb TiAl alloy

2022 ◽  
Vol 142 ◽  
pp. 107455
Author(s):  
Xuesong Xu ◽  
Hongsheng Ding ◽  
Haitao Huang ◽  
He Liang ◽  
Ruirun Chen ◽  
...  
Keyword(s):  
Tial Alloy ◽  
Directionally Solidified ◽  
Brittle To Ductile Transition

Study of Solid/Liquid Interface of Ti46Al0.5W0.5Si Ingot Directionally Solidified by a Near-Rectangular Cold Crucible

2012 ◽  
Vol 472-475 ◽  
pp. 767-770
Author(s):  
Rui Run Chen ◽  
Jie Ren Yang ◽  
Hong Sheng Ding ◽  
Jing Jie Guo ◽  
Yan Qing Su ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Directional Solidification ◽  
Process Parameters ◽  
Electromagnetic Stirring ◽  
Cold Crucible ◽  
Interface Morphology ◽  
Directionally Solidified ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Future Work

In this study, Ti46Al0.5W0.5Si ingots were directionally solidified by a near-rectangular cold crucible under different process parameters. These process parameters include the electromagnetic stirring, the crucible configuration and the molten drop, all of them have important effect on the S/L interface. The effects of the parameters on the solid/liquid (S/L) interface morphology were investigated, and the mechanisms of the parameters influencing the S/L interface were discussed and revealed. Results showed that the typical S/L interface of the ingots was presented as a curved ‘W-type’ shape. The uneven temperature distribution in the front of the solidified interface is the main reason for a curved S/L interface. Further, the requirements for obtaining a planar S/L interface in the process of cold crucible directional solidification were given, which provided a guide for the future work.

Microstructures and Properties of Refractory Metal-Silicide Eutectics

1992 ◽  
Vol 273 ◽  
Author(s):  
B. P. Bewlay ◽  
K-M. Chang ◽  
J. A. Sutliff ◽  
M. R. Jackson
Keyword(s):  
Electron Microscopy ◽  
Gas Turbines ◽  
Metal Silicide ◽  
Cold Crucible ◽  
New Materials ◽  
Directionally Solidified ◽  
Levitation Melting ◽  
Czochralski Crystal Growth ◽  
Transmission Electron ◽  
Eutectic Systems

ABSTRACTNew materials with improved high temperature properties are required for higher efficiency gas turbines. One group of alloys which show promise in this area are the eutectic systems Cr-Cr3Si, Nb-Nb3Si, and V-V3Si. Crystals of these refractory metalsilicide eutectics were directionally solidified using Czochralski crystal growth in conjunction with cold crucible levitation melting. The crystals were examined using scanning electron microscopy and transmission electron microscopy. In the present paper, these systems are examined with respect to the directionally solidified eutectic microstructures, phase equilibria, crystallography and mechanical properties.

Sign in / Sign up

Export Citation Format

Share Document