on the grain boundaries

  • 1Grain boundary strengthening — (or Hall Petch strengthening) is a method of strengthening materials by changing their average crystallite (grain) size. It is based on the observation that grain boundaries impede dislocation movement and that the number of dislocations within a …

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  • 2Grain growth — refers to the increase in size of grains (crystallites) in a material at high temperature. This occurs when recovery and recrystallisation are complete and further reduction in the internal energy can only be achieved by reducing the total area… …

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  • 3The Examined Life — is a collection of philosophical meditations written by Robert Nozick and published in 1989.Having pursued philosophy in an argumentative mode in Anarchy, State, and Utopia , and in an explanatory mode in Philosophical Explanations , his mode in… …

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  • 4Grain boundary — A grain boundary is the interface between two grains in a polycrystalline material. Grain boundaries disrupt the motion of dislocations through a material, so reducing crystallite size is a common way to improve strength, as described by the Hall …

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  • 5grain — grainer, n. grainless, adj. /grayn/, n. 1. a small, hard seed, esp. the seed of a food plant such as wheat, corn, rye, oats, rice, or millet. 2. the gathered seed of food plants, esp. of cereal plants. 3. such plants collectively. 4. any small,… …

    Universalium

  • 6The Byzantine Empire —     The Byzantine Empire     † Catholic Encyclopedia ► The Byzantine Empire     The ancient Roman Empire having been divided into two parts, an Eastern and a Western, the Eastern remained subject to successors of Constantine, whose capital was at …

    Catholic encyclopedia

  • 7The Fens — The Fens, also known as the Fenland, is a geographic area in eastern England, in the United Kingdom. The Fenland primarily lies around the coast of the Wash; it reaches into two Government regions (East Anglia and the East Midlands), four modern… …

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  • 8The Burning Raid — was a Union military raid conducted in the Loudoun Valley of Loudoun and Fauquier counties in Virginia in November and December of 1864 during the American Civil War. It was aimed at destroying the forage on which Confederate partisans operating… …

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  • 9Polis and its culture (The) — The polis and its culture Robin Osborne INTRODUCTION ‘We love wisdom without becoming soft’, Thucydides has the Athenian politician Pericles claim, using the verb philosophein.1 Claims to, and respect for, wisdom in archaic Greece were by no… …

    History of philosophy

  • 10The Hershey Company — Infobox Company company name = The Hershey Company company company type = Public (nyse|HSY) company slogan = a palatable confection and a most nourishing food. foundation = February 9, 1894 [ [http://homeschooling.about.com/cs/unitssubjhol/qt/feb9… …

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