scholarly journals Effect of withdrawal rate on the microstructure of directional solidified Ni-43Ti-4Al-2Nb-2Hf single crystal alloys

2012 ◽  
Vol 27 ◽  
pp. 1202-1208 ◽  
Author(s):  
Lili Zhou ◽  
Lijing Zheng ◽  
Shusuo Li ◽  
Lei Zhou ◽  
Huarui Zhang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Withdrawal Rate

Influence of withdrawal rate on the microstructure of Ni-base single-crystal superalloys containing Re and Ru

2011 ◽  
Vol 509 (19) ◽  
pp. 5866-5872 ◽  
Author(s):  
Gang Liu ◽  
Lin Liu ◽  
Cheng Ai ◽  
Bingming Ge ◽  
Jun Zhang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Withdrawal Rate

Effect of withdrawal rate on microstructure and lattice misfit of a Ni3Al based single crystal superalloy

2014 ◽  
Vol 592 ◽  
pp. 164-169 ◽  
Author(s):  
Cheng Ai ◽  
Shusuo Li ◽  
Heng Zhang ◽  
Lei Liu ◽  
Yue Ma ◽  
...  
Keyword(s):  
Single Crystal ◽  
Lattice Misfit ◽  
Single Crystal Superalloy ◽  
Withdrawal Rate

Effect of withdrawal rate transition on microstructural features of a single crystal Ni-based superalloy

2017 ◽  
Vol 52 (6) ◽  
pp. 1700012 ◽  
Author(s):  
Fazlollah Sadeghi ◽  
Ahmad Kermanpur ◽  
Davoud Heydari ◽  
Majid Bahmani
Keyword(s):  
Single Crystal ◽  
Withdrawal Rate

scholarly journals Influence of withdrawal rate on the porosity in a third-generation Ni-based single crystal superalloy

2017 ◽  
Vol 27 (2) ◽  
pp. 236-243 ◽  
Author(s):  
Quanzhao Yue ◽  
Lin Liu ◽  
Wenchao Yang ◽  
Taiwen Huang ◽  
Jun Zhang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystal Superalloy ◽  
Withdrawal Rate ◽  
Third Generation

Influence of Withdrawal Rate on Tensile and Stress Rupture Properties of the Single Crystal Superalloy DD9

2013 ◽  
Vol 747-748 ◽  
pp. 625-628 ◽  
Author(s):  
Z.X. Shi ◽  
J.R. Li ◽  
Shi Zhong Liu
Keyword(s):  
Single Crystal ◽  
Rupture Life ◽  
Stress Rupture ◽  
Single Crystal Superalloy ◽  
Withdrawal Rate ◽  
Stress Rupture Life ◽  
The Third ◽  
Stress Orientation ◽  
Stress Rupture Properties ◽  
Rupture Properties

The third generation single crystal superalloy DD9 was processed with different withdrawal rates and the effect of withdrawal rate on the tensile and stress rupture properties of the alloy was investigated. The relation between the mechanical properties and microstructure of the alloy with different withdrawal rates was discussed. The results showed that the withdrawal rate had a little effect on the tensile properties at 25 of the alloy. The tensile strength at 980 and stress rupture life at 1120/140MPa of DD9 alloy all increased with the increasing of withdrawal rate. The γ precipitates of specimen tensile at 25 had a little extension in the stress orientation. The extension of γ precipitates in the stress orientation at 980 was much more than that at 25. The vertical γ matrix at 980 became thinner and horizontal γ matrix became thicker slightly. The γ precipitates of those had rafted in a direction transverse to the applied stress.

scholarly journals Numerical Simulation of Directional Solidification Process of Single Crystal Ni- Based Superalloy Casting

2017 ◽  
Vol 17 (2) ◽  
pp. 111-118 ◽  
Author(s):  
D. Szeliga ◽  
K. Kubiak ◽  
J. Sieniawski
Keyword(s):  
Temperature Gradient ◽  
Single Crystal ◽  
Cooling Rate ◽  
Solidification Rate ◽  
Solidification Process ◽  
Longitudinal Section ◽  
Withdrawal Rate ◽  
Bottom Part ◽  
Rate Maximum ◽  
Predicted Values

Abstract The analysis of influence of mould withdrawal rate on the solidification process of CMSX-4 single crystal castings produced by Bridgman method was presented in this paper. The predicted values of temperature gradient, solidification and cooling rate, were determined at the longitudinal section of casting blade withdrawn at rate from 1 to 6mm/min using ProCAST software. It was found that the increase of withdrawal rate of ceramic mould results in the decrease of temperature gradient and the growth of cooling rate, along blade height. Based on results of solidification parameter G/R (temperature gradient/solidification rate), maximum withdrawal rate of ceramic mould (3.5 mm/min), which ensures lower susceptibility to formation process of new grain defects in single crystal, was established. It was proved that these defects can be formed in the bottom part of casting at withdrawal rate of 4 mm/min. The increase of withdrawal rate to 5 and 6 mm/min results in additional growth of susceptibility of defects formation along the whole height of airfoil.

Sign in / Sign up

Export Citation Format

Share Document