Title of dissertation: ANALYSIS AND CONTROL OF MICROSTRUCTURE IN BINARY ALLOYS Kyuyong Lee, Doctor of Philosophy, 2004 Dissertation directed by: Professor Wofgang Losert Department of Physics When metallic alloys solidify, various microstructures form inside the alloys. Most solidified alloys have a polycrystalline structure, which is an assembly of crystalline grains with boundaries between an...

The possibility of control over crystal facet orientation and microstructure via electrodeposition parametric variation towards enhancement applicability nanocomposites.

Jangdae Youn , Sumit Kewalramani , Jonathan D. Emery , Yanrong Shi , Shiming Zhang , Hsiu-Chieh Chang , You-jhih Liang , Chia-Ming Yeh , Chieh-Yuan Feng , Hui Huang , Charlotte Stern , Liang-Hsiang Chen , Jia-Chong Ho , Ming-Chou Chen , * Michael J. Bedzyk , * Antonio Facchetti , * and Tobin J. Marks * Fused Thiophene Semiconductors: Crystal Structure–Film Microstructure Transistor Performance ...

The martensite steels produced by quenching and tempering has been used for machine structural use. Martensite in ferrite-martensite dual-phase steels (hereinafter, DP steels) also has important roll in strengthening of the automobile steel sheets. Therefore the importance of analyzing the microstructure and their mechanical properties of the martensite has been increased year by year. Many res...

[1] The anelastic response of single-crystal and polycrystalline quartz and quartz-rich sandstones to applied stress at low frequencies has been investigated by dynamic mechanical analysis and force torsion pendulum measurements. The dynamic modulus was measured on heating and cooling through the a-b phase transition under shear and bending stress applied at low frequency (~1Hz). Single crystal...

The common approach to crystal-plasticity finite element modeling for load-bearing prediction of metallic structures involves the simulation simplified grain morphology and substructure detail. This paper details a methodology predicting structure–property effect as-manufactured microstructure, including true orientation, on cyclic plasticity, fatigue crack initiation in biomedical-grade CoCr a...

The crossed lamellar microstructure of mollusk shells shows a very complex hierarchical architecture constituted of long rod-shaped aragonite crystals stacked parallel to each other inside each first order lamella, which are almost perpendicular to the ones contained in parallel neighboring lamellae. To better understand the construction and properties of the crossed lamellar microstructure we ...

Thin fi lms with microcrystalline and nanocrystalline grains are used in MEMS and thin fi lms for electronics. These systems have mechanical properties that depend on the microstructure. Grain size is frequently reported only as mean values or bounds. It has been demonstrated, however, that a mean grain size value is insuffi cient to describe the microstructure of these materials and the result...

Etching of crystalline silicon by potassium hydroxide (KOH) etchant with temperature variation has been studied. Results presented here are temperature dependent ER (etch rate) along the crystallographic orientations. Etching and activation energy are found to be consistently favorable with the thermal agitation for a given crystal plane. Study demonstrates that the contribution of microscopic ...