Recovery, recrystallization, grain growth and phase stability of a family of FCC-structured multi-component equiatomic solid solution alloys

2014 ◽  
Vol 46 ◽  
pp. 131-140 ◽  
Author(s):  
Z. Wu ◽  
H. Bei ◽  
F. Otto ◽  
G.M. Pharr ◽  
E.P. George
Keyword(s):  
Solid Solution ◽  
Grain Growth ◽  
Phase Stability

Effect of Rare Earth (RE) La on Solid Solution of Second Phase Particle and Austenite Grain Growth in Steel Containing High Niobium

2011 ◽  
Vol 189-193 ◽  
pp. 2869-2874 ◽  
Author(s):  
Wen Zhong Song ◽  
Qi Fang ◽  
Hui Ping Ren ◽  
Zi Li Jin ◽  
Hui Chang
Keyword(s):  
Solid Solution ◽  
Growth Rate ◽  
Rare Earth ◽  
Grain Growth ◽  
Phase Particle ◽  
Solution Temperature ◽  
Second Phase ◽  
Austenite Grain ◽  
Austenite Grain Growth ◽  
Soaking Temperature

The solid solution of the second phase particle and austenite grain growth behavior of the high niobium-containing RE steel was studied by mathematical calculation and extraction replica technique. The purpose of the study was to investigate the effects of Rare Earth La on austenite grain growth and propose an empirical equation for predicting the austenite grain size of RE steel. Austenite grain grows in an exponential law with the increase of heating temperature, while approximately in a parabolic law with the increase of holding time. Results show that the RE steel has good anti-coarsening ability at elevated temperatures. When soaking temperature is lower than 1250°C , AGS and growth rate are small for high niobium steel, but soaking temperature is lower than 1220°C , AGS and growth rate are small for RE steel. RE La can promote solid solution of second-phase particles Nb(C, N), the solution temperature decrease 30°C than high niobium steel.

Grain growth and phase stability of nanocrystalline cubic zirconia under ion irradiation

2010 ◽  
Vol 82 (18) ◽  
Author(s):  
Yanwen Zhang ◽  
Weilin Jiang ◽  
Chongmin Wang ◽  
Fereydoon Namavar ◽  
Philip D. Edmondson ◽  
...  
Keyword(s):  
Grain Growth ◽  
Phase Stability ◽  
Ion Irradiation ◽  
Cubic Zirconia

Strain Enhanced High Strength Cu–Ag–Zr Conductors

2009 ◽  
Vol 633-634 ◽  
pp. 707-715 ◽  
Author(s):  
Julia Lyubimova ◽  
Jens Freudenberger ◽  
Alexandere Gaganov ◽  
Hansjörg Klauss ◽  
Ludwig Schultz
Keyword(s):  
Heat Treatment ◽  
Solid Solution ◽  
Phase Separation ◽  
Grain Growth ◽  
High Strength ◽  
Homogeneous Material ◽  
Growth Processes ◽  
Heat Treated ◽  
Different Temperatures ◽  
Zr Alloys

Recovery, recrystallisation and grain growth processes as well as the formation of a solid solution and the phase separation of a homogeneous material into a heterogeneous one are observed for Cu-Ag-Zr alloys heat-treated at different temperatures by means of mechanical, electrical and microstructural analyses. Heat treatments are shown to be an effective tool to enhance the strain to failure. If applied between several deformation steps the heat treatment causes an increase of both strain and strength limits.

Evolution of phases and microstructure in optical waveguides of lithium niobate

1994 ◽  
Vol 9 (8) ◽  
pp. 2040-2050 ◽  
Author(s):  
M.A. McCoy ◽  
S.A. Dregia ◽  
W.E. Lee
Keyword(s):  
Solid Solution ◽  
Lithium Niobate ◽  
Grain Growth ◽  
Optical Waveguides ◽  
Abnormal Grain Growth ◽  
Microstructural Development ◽  
X Ray Diffraction ◽  
Rutile Structure ◽  
Transmission Electron ◽  
Epitaxial Grain Growth

The microstructural development of Ti: LiNbO3 optical waveguides, as a function of annealing time and temperature, was studied by x-ray diffraction, scanning and transmission electron microscopy, and Auger electron spectroscopy. The microstructure evolves in three major stages: oxidation, precipitation and abnormal grain growth, and interdiffusion. The deposited Ti film is oxidized at low temperatures through a series of intermediate TiOx phases until complete oxidation to rutile TiO2 occurs at ∼500 °C. At intermediate temperatures, 500-800 °C, epitaxial precipitates of LiNb3O8 are formed at the rutile/LiNbO3 interface. At this stage abnormal grain growth occurs in the rutile film, causing multivariant epitaxy where all of the grains have a single orientation relationship to the substrate. Subsequent interdiffusion between TiO2 and LiNb3O8 produces a solid solution with the rutile structure which, at these temperatures, appears to coexist in equilibrium with the underlying lithium niobate substrate. This rutile solid solution serves as the source of Ti in the final stage of interdiffusion, which occurs only at higher temperatures (≳ 1000 °C), and leads to consumption of the rutile layer by the substrate. Structural models are discussed for epitaxial grain growth and interdiffusion.

On the extension of the α-SiAlON solid solution range and anisotropic grain growth in Sm-doped α-SiAlON ceramics

1997 ◽  
Vol 17 (4) ◽  
pp. 575-580 ◽  
Author(s):  
Lars-Olov Nordberg ◽  
Zhijian Shen ◽  
Mats Nygren ◽  
Thommy Ekström
Keyword(s):  
Solid Solution ◽  
Grain Growth ◽  
Solid Solution Range

scholarly journals Phase stability, physical properties and strengthening mechanisms of concentrated solid solution alloys

2017 ◽  
Vol 21 (5) ◽  
pp. 267-284 ◽  
Author(s):  
Z. Wu ◽  
M.C. Troparevsky ◽  
Y.F. Gao ◽  
J.R. Morris ◽  
G.M. Stocks ◽  
...  
Keyword(s):  
Solid Solution ◽  
Physical Properties ◽  
Phase Stability ◽  
Strengthening Mechanisms
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