Columnar grain growth in axially heated urania based sinters

1969 ◽  
Vol 32 (2) ◽  
pp. 351-353 ◽  
Author(s):  
I. Amato ◽  
R.L. Colombo
Keyword(s):  
Grain Growth ◽  
Columnar Grain

Comparison of Experimental and Computational Aspects of Grain Growth in Al-Foil

2000 ◽  
Vol 652 ◽  
Author(s):  
Melik C. Demirel ◽  
Andrew P. Kuprat ◽  
Denise C. George ◽  
Bassem S. El-Dasher ◽  
Neil N. Carlson ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Grain Growth ◽  
Three Dimensional ◽  
Interface Energy ◽  
Grain Structure ◽  
Electron Backscattered Diffraction ◽  
Boundary Properties ◽  
Ebsd Technique ◽  
Columnar Grain ◽  
Grain Boundary Motion

ABSTRACTGrain boundary and crystallographic orientation information of an Al-foil with a columnar grain structure is characterized by Electron Backscattered Diffraction (EBSD) technique. The starting microstructure and grain boundary properties are implemented as an input for the three- dimensional grain growth simulation. In the computational model, minimization of the interface energy is the driving force for the grain boundary motion. The computed evolved microstructure is compared with the final experimental microstructure, after annealing at 550 °C. Good agreement is observed between the experimentally obtained microstructure and the simulated microstructure. The constitutive description of the grain boundary properties was based on a 1- parameter characterization of the variation in mobility with misorientation angle.

Elongated Grain Growth Mechanism of Alumina Ceramics with Additives

2010 ◽  
Vol 105-106 ◽  
pp. 844-847
Author(s):  
Yong Chang Zhu ◽  
Shou Fan Rong ◽  
Ji Wei Guo ◽  
Jun Gang Li
Keyword(s):  
Grain Growth ◽  
Growth Mechanism ◽  
Second Phase ◽  
Pressureless Sintering ◽  
Sintering Process ◽  
Alumina Ceramics ◽  
Effect Of Additives ◽  
Sintering Properties ◽  
Columnar Grain

The elongated grain evolution of alumina ceramics doping with Al2O3-CaO-SiO2(CAS), Nb2O5, and 3Y-TZP was studied under pressureless sintering. From in-situ growth elongated grain cooperating with second phase to toughen the alumina ceramics, microstructure and sintering properties were firstly studied systematically. The effect of additives on the alumina ceramics with columnar grain were analyzed by means of TEM, SEM, XRD, etc. Basing on the analyzed sintering process by the principle of dynamics, the elongated grain growth mechanism was further studied.

scholarly journals Columnar grain growth of FePt(L10) thin films

2012 ◽  
Vol 111 (7) ◽  
pp. 07B720 ◽  
Author(s):  
En Yang ◽  
Hoan Ho ◽  
David E. Laughlin ◽  
Jian-Gang Zhu
Keyword(s):  
Thin Films ◽  
Grain Growth ◽  
Columnar Grain

Stress and Microstructure in Rf-Diode and Dc-Magnetron Sputtered Beryllium Thin Films

1991 ◽  
Vol 239 ◽  
Author(s):  
Risto H. Mutikainen
Keyword(s):  
Thin Films ◽  
Grain Growth ◽  
Deposition Parameters ◽  
Film Microstructure ◽  
Columnar Grain ◽  
Free Films

ABSTRACTThe effect of deposition parameters on the properties of sputtered Be films has been studied. The parameters have been optimized to obtain stress free films. Nitrogen pulsing has been used to improve the film microstructure by suppressing the columnar grain growth.

Columnar grain growth during annealing prior to cold rolling of non-oriented electrical steels

2019 ◽  
Vol 243 ◽  
pp. 8-18 ◽  
Author(s):  
E.J. Gutiérrez Castañeda ◽  
C.N. Palafox Cantú ◽  
A.A. Torres Castillo ◽  
A. Salinas Rodríguez ◽  
R. Deaquino Lara ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Grain Growth ◽  
Electrical Steels ◽  
Columnar Grain

scholarly journals A Discrete Dendrite Dynamics Model for Epitaxial Columnar Grain Growth in Metal Additive Manufacturing with Application to Inconel

2020 ◽  
Vol 36 ◽  
pp. 101611
Author(s):  
Santanu Paul ◽  
Jian Liu ◽  
Seth T. Strayer ◽  
Yunhao Zhao ◽  
Soumya Sridar ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Grain Growth ◽  
Dynamics Model ◽  
Metal Additive Manufacturing ◽  
Columnar Grain ◽  
Metal Additive

Diffusion driven columnar grain growth induced in an Al–Si-coated steel substrate

2014 ◽  
Vol 251 ◽  
pp. 15-20 ◽  
Author(s):  
Ivonne Infante Danzo ◽  
Yvan Houbaert ◽  
Kim Verbeken
Keyword(s):  
Grain Growth ◽  
Steel Substrate ◽  
Coated Steel ◽  
Columnar Grain

Single-crystal and Nano-columnar Growth of Gadolinium-doped Ceria Thin Films on Oxide Substrates Studied Using Electron Microscopy

2003 ◽  
Vol 795 ◽  
Author(s):  
D. X. Huang ◽  
C. L. Chen ◽  
A. J. Jacobson
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Single Crystal ◽  
Grain Growth ◽  
Lattice Mismatch ◽  
Compressive Strain ◽  
Doped Ceria ◽  
Columnar Grain ◽  
Film Substrate ◽  
Gadolinium Doped Ceria

ABSTRACTGadolinium-doped ceria (GDC) thin films were grown by pulsed laser ablation on various oxide single crystal substrates including MgO, YSZ, LAO, NGO, and STO with different film-substrate lattice mismatch ratios. The film microstructures were characterized mainly by using electron microscopy. A clear influence of the filmsubstrate lattice mismatch on the film crystallinity has been observed. The GDC films usually exhibit columnar grain growth for a large range of film-substrate lattice mismatch ratios. A cube-on-cube growth of GDC film on MgO has been observed with a surprisingly high lattice mismatch ratio of 28%. The highest film crystallinity is obtained on the LAO substrates under a small compressive strain. This single-crystalline GDC film shows no columnar grain growth but presents a novel directionally-aligned precipitated Gd-rich nanoparticle system, which plays a specific role in relaxing various kinds of strain fields induced during the thin film growth to ensure the film crystallinity.

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