Divorced eutectoid transformation in high-Al added steels due to heterogenous nucleation of κ-carbide

2022 ◽  
Vol 209 ◽  
pp. 114395
Author(s):  
J.C. Pang ◽  
W.F. Yang ◽  
G.D. Wang ◽  
S.J. Zheng ◽  
R.D.K. Misra ◽  
...  
Keyword(s):  
Eutectoid Transformation ◽  
Heterogenous Nucleation

Heterogeneous Nucleation of Ordered Mesoporous Materials

1994 ◽  
Vol 371 ◽  
Author(s):  
Jun Liu ◽  
Jud W. Virden ◽  
Anthony Y. Kim ◽  
Bruce C. Bunker
Keyword(s):  
Mesoporous Materials ◽  
Heterogeneous Nucleation ◽  
Colloidal Particles ◽  
Co Adsorption ◽  
Surfactant Solution ◽  
Nucleation Process ◽  
Ordered Mesoporous Materials ◽  
Ordered Mesoporous ◽  
Ceramic Precursors ◽  
Heterogenous Nucleation

AbstractRecently we proposed that heterogenous nucleation is an important phenomenon for the preparation of ordered mesoporous materials. In this paper we further investigate the effect of colloidal particles on the nucleation process of mesoporous materials. Based on the change of the electrical mobilities of the particles in the surfactant solution, we suggest that the adsorption and co-adsorption of surfactant and ceramic precursors changes local structural and chemistry on the particle surfaces, and favors the nucleation events within these regions.

Atomic interactions between Si and Mn during eutectoid transformation in high-carbon pearlitic steel

2019 ◽  
Vol 126 (24) ◽  
pp. 245102
Author(s):  
Linghui Huang ◽  
Rui Zhang ◽  
Xuefeng Zhou ◽  
Yiyou Tu ◽  
Jianqing Jiang
Keyword(s):  
Pearlitic Steel ◽  
Eutectoid Transformation ◽  
High Carbon ◽  
Atomic Interactions

scholarly journals Effect of Cooling Rate at the Eutectoid Transformation Temperature on the Corrosion Resistance of Zn-4Al Alloy

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1703
Author(s):  
Marzena M. Lachowicz ◽  
Robert Jasionowski
Keyword(s):  
Corrosion Resistance ◽  
Cooling Rate ◽  
Cast Alloy ◽  
Corrosion Current ◽  
Electrochemical Studies ◽  
Eutectoid Transformation ◽  
Nacl Solution ◽  
Α Phase ◽  
Initial Stage ◽  
Alloy Microstructure

The main purpose of this work was to experimentally determine the effect of the cooling rate during the eutectoid transformation on the corrosion resistance of a hypoeutectic Zn-4Al cast alloy in 5% NaCl solution. This was considered in relation to the alloy microstructure. For this purpose, metallographic and electrochemical studies were performed. It was found that the faster cooling promoted the formation of finer (α + η) eutectoid structures, which translated into a higher hardness and lower corrosion current density. In the initial stage of corrosion processes the eutectoid structure in the eutectic areas were attacked. At the further stages of corrosion development, the phase η was dissolved, and the α phase appears to be protected by the formation of corrosion products.

Quick Spherodizing in GCr15 Steel by Mechanism of Divorced Eutectoid

2011 ◽  
Vol 295-297 ◽  
pp. 515-519 ◽  
Author(s):  
Qi Wei Chen ◽  
Guo Hui Zhu ◽  
Shu Min Cao ◽  
Ai Min Zhao
Keyword(s):  
Phase Transformation ◽  
Energy Consumption ◽  
Annealing Time ◽  
Eutectoid Transformation ◽  
Transformation Mechanism ◽  
Gcr15 Steel ◽  
Spheroidizing Annealing ◽  
Novel Processing ◽  
Conventional Annealing

A novel processing of quick spheroidizing annealing based on DET(divorced eutectoid transformation) mechanism has been presented in this paper. Spheroidized carbide microstructure could be achieved directly by austenite through phase transformation during cooling processing, which is different from the conventional spheroidization annealing where carbide was spheroidized by carbide lamellar gradually resolved and coarsened.The novel processing of spheroidizing annealing presented here will decrease the annealing time from 10-16 hours in conventional processing to around 2-3 hours, which could save about 50% of the energy consumption, comparing to the conventional annealing processing.

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