Irradiation Creep and Growth Behavior, and Microstructural Evolution of Advanced Zr-Base Alloys

2008 ◽  
pp. 51-51-23 ◽  
Author(s):  
D Gilbon ◽  
A Soniak ◽  
S Doriot ◽  
J-P Mardon
Keyword(s):  
Microstructural Evolution ◽  
Growth Behavior ◽  
Irradiation Creep

Boundary Structure-Dependent Grain Growth Behavior in Polycrystals: Model and Principle

2013 ◽  
Vol 753 ◽  
pp. 377-382 ◽  
Author(s):  
Suk Joong L. Kang
Keyword(s):  
Grain Growth ◽  
Microstructural Evolution ◽  
Driving Force ◽  
Coupling Effect ◽  
Normal Growth ◽  
Growth Behavior ◽  
Boundary Structure ◽  
Mixed Control ◽  
Grain Boundary Structure ◽  
Grain Growth Behavior

This paper reviews our recent investigations on grain growth in ceramics. Grain growth behavior has been found to be governed by the grain boundary structure: normal growth with a stationary relative grain size distribution for rough boundaries and non-normal (nonstationary) growth for faceted boundaries. Based on the concept of nonlinear migration of faceted boundaries, the mixed control model of grain growth is introduced and the principle of microstructural evolution is deduced. This principle states that various types of grain growth behavior are predicted as a result of the coupling effect between the maximum driving force for growth and the critical driving force for appreciable migration of the boundary. A wealth of experimental results supports the theoretical predictions of grain growth behavior, showing the generality of the suggested principle of microstructural evolution. Application of this principle is also demonstrated for the fabrication of single crystals as well as polycrystals with desired microstructures.

Microstructural Evolution and Growth Behavior of In Situ TiB Whisker Array in ZrB2 -SiC/Ti6Al4V Brazing Joints

2013 ◽  
Vol 96 (12) ◽  
pp. 3712-3719 ◽  
Author(s):  
Weiqi Yang ◽  
Tiesong Lin ◽  
Peng He ◽  
Ming Zhu ◽  
Changbao Song ◽  
...  
Keyword(s):  
Microstructural Evolution ◽  
Growth Behavior

Microstructural evolution and IMCs growth behavior of Sn-58Bi-0.25Mo solder joint during aging treatment

2018 ◽  
Vol 5 (2) ◽  
pp. 026304
Author(s):  
Li Yang ◽  
Lu Zhu ◽  
Yaocheng Zhang ◽  
Shiyuan Zhou ◽  
Yifeng Xiong ◽  
...  
Keyword(s):  
Solder Joint ◽  
Microstructural Evolution ◽  
Aging Treatment ◽  
Growth Behavior ◽  
Imcs Growth

Microstructural Evolution in Reduced TiO2

1981 ◽  
Vol 39 ◽  
pp. 74-75
Author(s):  
W. T. Donlon ◽  
S. Shinozaki ◽  
E. M. Logothetis ◽  
W. Kaizer
Keyword(s):  
Microstructural Evolution ◽  
Point Defects ◽  
Extended Defects ◽  
Small Deviations ◽  
Controlled Atmospheres ◽  
Limited Solubility ◽  
Thin Foils ◽  
Heat Treated ◽  
Porous Polycrystalline ◽  
Crystallographic Shear

Since point defects have a limited solubility in the rutile (TiO2) lattice, small deviations from stoichiometry are known to produce crystallographic shear (CS) planes which accomodate local variations in composition. The material used in this study was porous polycrystalline TiO2 (60% dense), in the form of 3mm. diameter disks, 1mm thick. Samples were mechanically polished, ion-milled by conventional techniques, and initially examined with the use of a Siemens EM102. The electron transparent thin foils were then heat-treated under controlled atmospheres of CO/CO2 and H2 and reexamined in the same manner.The “as-received” material contained mostly TiO2 grains (∼5μm diameter) which had no extended defects. Several grains however, aid exhibit a structure similar to micro-twinned grains observed in reduced rutile. Lattice fringe images (Fig. 1) of these grains reveal that the adjoining layers are not simply twin related variants of a single TinO2n-1 compound. Rather these layers (100 - 250 Å wide) are alternately comprised of stoichiometric TiO2 (rutile) and reduced TiO2 in the form of Ti8O15, with the Ti8O15 layers on either side of the TiO2 being twin related.

INDALLOY 160-190

Alloy Digest ◽  
1984 ◽  
Vol 33 (1) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Precision Measurement ◽  
Heat Treating ◽  
Spray Forming ◽  
Growth Behavior ◽  
Temperature Range

Abstract INDALLOY 160-190 is a bismth-base low-melting alloy that melts through th temperature range 160-190 F. It shrinks immediately upon solidification, grows back to zero in about one hour and then shows additional growth. This shrinkage-growth behavior makes it an ideal alloy for proof casting and precision measurement of internal dimensions. This alloy originally was developed for use by children for casting soldiers and other small objects. It performs best among the low-melting alloys for spraying in the spray forming of masks and molds and in metallizing. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on casting, heat treating, machining, and joining. Filing Code: Bi-34. Producer or source: Indium Corporation of America.

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