Anisotropy of strength and plasticity in single-colony lamellar structure of Ti‒6Al‒4V alloy

2020 ◽  
Vol 177 ◽  
pp. 223-228 ◽  
Author(s):  
Yoji Mine ◽  
Yuya Matsuzaki ◽  
Kazuki Takashima
Keyword(s):  
Lamellar Structure ◽  
Single Colony ◽  
Strength And Plasticity

Fatigue crack growth behaviour in single-colony lamellar structure of Ti–6Al–4V

2019 ◽  
Vol 165 ◽  
pp. 107-111 ◽  
Author(s):  
Yoji Mine ◽  
Shunsuke Katashima ◽  
Rengen Ding ◽  
Paul Bowen ◽  
Kazuki Takashima
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Lamellar Structure ◽  
Growth Behaviour ◽  
Crack Growth Behaviour ◽  
Single Colony

EFFECTS OF UNTWINNING AND {1012} TWIN LAMELLAR STRUCTURE ON THE MECHANICAL PROPERTIES OF Mg ALLOY

2013 ◽  
Vol 49 (3) ◽  
pp. 291 ◽  
Author(s):  
Chao LOU ◽  
Xiyan ZHANG ◽  
Runhong WANG ◽  
Gaolin DUAN ◽  
Qing LIU
Keyword(s):  
Mechanical Properties ◽  
Lamellar Structure ◽  
Mg Alloy

Melting and Crystallization of Poly(oxyethylene) Mixtures

1995 ◽  
Vol 60 (11) ◽  
pp. 1855-1868 ◽  
Author(s):  
Ivo Lapeš ◽  
Josef Baldrian ◽  
Ján Biroš ◽  
Julius Pouchlý ◽  
Hanes Mio
Keyword(s):  
Melting Point ◽  
Lamellar Structure ◽  
Composition Dependence ◽  
Eutectic Phase ◽  
Eutectic Melting ◽  
Pure Polymer ◽  
X Ray ◽  
Long Period ◽  
Solid Liquid ◽  
Melting And Crystallization

Solid-liquid eutectic phase diagrams of mixtures of poly(oxyethylene) (M.w. 2 000) with hydroxy and methoxy endgroups, crystallizing in extended-chain macroconformation only, with glutaric acid, benzoic acid or 1,2-diphenylethane are given. The composition dependence of the melting temperature can be fitted by the Flory-Huggins equation. Interaction parameters X and interaction energy densities B evaluated from the diluent branch of the phase diagram are consistent with those obtained from the polymer branch provided the calorimetric value of enthalpy of polymer fusion is used in the latter computation. Measurements of small- and wide-angle X-ray scatterings showed a stacked lamellar structure of POE. Below the eutectic melting point, the long period of the polymer is almost independent of the diluent concentration. On raising temperature gradually from this melting point to the melting point of pure polymer, the increasing long period indicates the penetration of the diluent between the lamellae. As follows from SAXS measurements, the crystallinity of poly(oxyethylene) in the mixtures remains unchanged compared to that of the pure polymer.

scholarly journals Gold nanoparticles grafted with chemically incompatible ligands

RSC Advances ◽  
2021 ◽  
Vol 11 (16) ◽  
pp. 9568-9571
Author(s):  
Joanna M. Wolska ◽  
Aleksandra Błażejewska ◽  
Martyna Tupikowska ◽  
Damian Pociecha ◽  
Ewa Górecka
Keyword(s):  
Gold Nanoparticles ◽  
Lamellar Structure

A Janus-type lamellar structure is formed from gold nanoparticles grafted with chemically incompatible mesogenic ligands. Metallic NP-rich sublayers are separated by ligand-rich sublayers of various composition due to the ligand segregation.

Developing Alternative Building Materials from Mining Waste

2014 ◽  
Vol 976 ◽  
pp. 202-206 ◽  
Author(s):  
Javier Flores Badillo ◽  
Juan Hernández Ávila ◽  
Francisco Patiño Cardona ◽  
Norma Yacelit Trápala Pineda ◽  
José Abacú Ostos Santos
Keyword(s):  
Compressive Strength ◽  
Building Materials ◽  
Subsequent Treatment ◽  
Mining Waste ◽  
Mineralogical Characterization ◽  
Green Strength ◽  
Mineral Phases ◽  
Heavy Clay ◽  
Industrial Materials ◽  
Strength And Plasticity

In this paper we present the production of alternative industrial materials from the mining waste in the form of tailings, this study was made with the tailings of Dos Carlos, establishing 4 sampling zones, dividing them into three strata in the bottom, middle and top. The sampling method used is quartering, to homogenize the material and anticipate the possible use of it as a building material, having for this purpose 12 ceramic mixtures for subsequent treatment. Chemical composition was determined as 70.43% SiO2, 7.032% Al2O3, 2.69% Fe2O3, 0.46% MnO2, 3.98% K2O, 3.34% CaO, 2.50% Na2O, 56 grams per tonne of Ag y 0.6 grams per tonne of Au. In the mineralogical characterization the tailings presents silica, albite, berlinite, orthoclase and potassium jarosite as the main mineral phases, among other mineral phases in lesser concentration such as gypsum, calcite, anorthoclase, pyrite, sphalerite and galena. The determinations of the tailing material granulometry in the range of 60% in a size less than 270 mesh (53 μm). Afterwards, the alternative industrial materials were produced by using the tailings and heavy clay in order to give the composite a good green strength and plasticity during development, but above all to give it a compressive strength similar or higher than that of products derived from conventional processes. Keywords: Tailings, green strength, compressive strength, plasticity, heavy clays, alternative industrial materials.

Influence of Mineralogical Origin of Limestone Powder on the Performance of Complex Binder Material

2011 ◽  
Vol 477 ◽  
pp. 136-141
Author(s):  
Qin Wang ◽  
Jia Long Chen ◽  
Chang Cheng Zhang ◽  
Wei Niu
Keyword(s):  
Crystal Structure ◽  
Clay Mineral ◽  
Lamellar Structure ◽  
Perfect Crystal ◽  
Limestone Powder ◽  
Elemental Component ◽  
Binder Material ◽  
Complex Binder ◽  
Main Components ◽  
Perfect Crystal Structure

The effect of mineralogical origin, elemental component, crystal structure of three types of limestone powder on the fluidity of cement-limestone paste and mortar was investigated. The results show that the limestone powder originated from the mine of limestone and river pebble have better water-reducing effect, which is closely correlated with the main components of Calcite and Dolomite. These two mineral have relatively regular, orderly and perfect crystal structure with few defects and unfilled pores which are liable to adsorb more water and water-reducing agents. On the contrary, the limestone powder derived from the mine of sandstone has nearly no water-reducing effect which is ascribed to the large amount of clay mineral which exhibit lamellar structure leading to the large quantity of consumption of water.

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