Annealing (metallurgy)

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Topic: Annealing (metallurgy)

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	Encyclopedia: Annealing
		Annealing (metallurgy), a heat treatment wherein the microstructure of a material is altered, causing changes in its properties such as strength and hardness.
		Annealing, in glassblowing and lampworking, is heating a piece of glass until its temperature reaches a stress-relief point, that is, a temperature at which the glass is still too hard to deform, but is soft enough for internal stresses to ease.
		Annealing (biology), in genetics, DNA or RNA pairing by hydrogen bonds to a complementary sequence, forming a double-stranded polynucleotide.
	www.nationmaster.com /encyclopedia/Annealing (649 words)

	Simulated annealing - Wikipedia, the free encyclopedia
		The name and inspiration come from annealing in metallurgy, a technique involving heating and controlled cooling of a material to increase the size of its crystals and reduce their defects.
		Simulated annealing (SA) is a generic probabilistic meta-algorithm for the global optimization problem, namely locating a good approximation to the global optimum of a given function in a large search space.
		In the simulated annealing (SA) method, each point s of the search space is compared to a state of some physical system, and the function E(s) to be minimized is interpreted as the internal energy of the system in that state.
	en.wikipedia.org /wiki/Simulated_annealing (1883 words)

	Knowledge Annealing
		In metallurgy, annealing means to heat a metal close to its melting point and cool it over a long period of time.
		Annealing is nature's way (usually) finding a global near-optimum through local optimization by countless numbers of atoms.
		The idea with information annealing is to put a hypertext system on a network (Internet?) and then allow all users to change anything they want.
	c2.com /cgi/wiki?KnowledgeAnnealing (1098 words)

	Simulated annealing - Wikipedia, the free encyclopedia
		The name and inspiration come from annealing in metallurgy, a technique involving heating and controlled cooling of a material to increase the size of its crystals and reduce their defects.
		Simulated annealing (SA) is a generic probabilistic meta-algorithm for the global optimization problem, namely locating a good approximation to the global optimum of a given function in a large search space.
		In the simulated annealing (SA) method, each point s of the search space is compared to a state of some physical system, and the function E(s) to be minimized is interpreted as the internal energy of the system in that state.
	en.wikipedia.org /wiki/Simulated_annealing (2083 words)

	Annealing - Wikipedia, the free encyclopedia
		Annealing (metallurgy), a heat treatment wherein the microstructure of a material is altered, causing changes in its properties such as strength and hardness.
		Information annealing or knowledge annealing, in library and information science, is a network-based information system or body of knowledge in which all users of the system are permitted to change the system at will.
		Simulated annealing, a technique for searching for a solution in a space otherwise too large for "ordinary" search methods to yield results.
	en.wikipedia.org /wiki/Annealing (185 words)

	World Gold Council > discover
		Authors: Kim, K.-S. (Yeojoo Institute of Technology); Yang, J.-M. Yu, C.-H. Jeon, H.-J. Keywords: METALLURGY, solder, intermetallic compound, annealing treatment, ELECTRODEPOSITION/ELECTROPLATING, PROPERTIES, diffusion, wetting, mechanical,
		Authors: Kushchevskaya, N. Keywords: METALLURGY, powder technology, composites, PROPERTIES, wetting,,
		Authors: Lebbai, M. (Hong Kong University of Science and Technology); Kim, J.-K. (Hong Kong University of Science and Technology); Yuen, M.M.F. (Hong Kong University of Science and Technology);
	www.gold.org /discover/sci_indu/techdatabase/index.html?action=searchList&type=keywords&search=wetting (185 words)

	toolmaking trades a bibliography of tool references
		Stoughton, B. The metallurgy of iron and steel.
		Metallurgy of cast iron: Complete exposition of the processes involved in its treatment, chemically and physically, from the blast furnace through the foundry to the testing machine.
		Hardening, tempering, annealing and forging of steel: A treatise on the practical treatment and working of high and low grade steel.
	www.davistownmuseum.org /bibToolTrades.htm (185 words)

	Generalized Simulated Annealing in Quantum Chemistry
		In this technique, an artificial temperature is introduced and gradually cooled, in complete analogy with the well known annealing technique frequently used in metallurgy when a molten metal reaches its crystalline state (global minimum of the thermodynamical energy).
		More precisely speaking, we search for the quickest annealing (that is, in some sense approaching a quenching) which preserves the probability of ending in a global minimum being equal one.
		Near the end of the process, the system hopefully is inside of the attractive basin of the global minimum (or in one of global minima, if there is degeneracy).
	www.unb.br /iq/kleber/GSA/artigo1/node2.html (185 words)

	Metallurgy
		Extractive metallurgy is the practice of separating metals, usually in the form of a metal oxide, from their ore, and refining them into a pure metal.
		Metals can be heat treated by annealing, quenching and case hardening to alter properties of toughness, hardness or resistance to corrosion.
		Metallurgy is a domain of Materials Science and of Materials Engineering that studies the physical and chemical behavior of metallic elements and their mixtures, which are called alloys.
	www.sciencedaily.com /encyclopedia/metallurgy (877 words)

	CMI Metallurgy - Continuous strip processing lines and equipment
		Cockerill Sambre Kessales Belgium, Annealing line, capacity 650,000 t/y commissioning 1985
		CMI Metallurgy - Continuous strip processing lines and equipment
	www.cmi.be /metallurgy/i_div1_en.htm (33 words)

	Alcoa in Russia
		Other aspects of cooperation between the district's enterprises and the aluminum giant were also discussed at this meeting; in particular, the need for cooperation between the VFD's aircraft plants and the BKMPA, which has a furnace for annealing outer aircraft wings that is unique in Russia, was noted.
		This office will be opened in the Samara region, where the company acquired the Samara Metallurgy Plant (SMP) in 2004; however, its jurisdiction will extend to all of Alcoa's Russian facilities.
		As Sergey Kiriyenko stated at the meeting, the arrival in the district of Alcoa - a world leader in its segment of the metallurgical industry - will undoubtedly have a positive effect on both the region's level of corporate culture and its investment appeal.
	www.alcoa.com /russia/en/news/releases/meet.asp (225 words)

	Heuristic Search
		The SIMULATED ANNEALING algorithm is based upon the physical process which occurs in metallurgy where metals are heated to high temperatures and are then cooled.
		It is often called the British Museum method as it is like looking for an exhibit at random.
		The best first search algorithm will involve an OR graph which avoids the problem of node duplication and assumes that each node has a parent link to give the best node from which it came and a link to all its successors.
	www.cs.cf.ac.uk /Dave/AI2/subsubsection3_4_1_4.html (225 words)

	The Hendrix Group - ferrous metallurgy information
		Annealing - Heating steels to slightly above AC, holding for austenite to form, then slowly cooling (usually in a furnace) to produce ferrite and pearlite with a small grain size, softness, and good ductility.
		Upper Transformation Temperature - (AC) Temperature at which structure completes change from ferrite and pearlite to austenite if being heated, upon cooling, temperature at which structure begins change from austenite to ferrite and pearlite.
		Lower Transformation Temperature - (AC) Temperature at which structure begins to change from ferrite and pearlite to austenite if being heated, upon cooling, temperature at which structure completes change from austenite to ferrite and pearlite.
	www.hghouston.com /mtechart.html (356 words)

	Metal and Metallurgy engineering - case hardening!!
		Spherodising will occurr during annealing from 300 to 600 degrees, but this will be transferred back to austenite upon the second solution treatment above 800 degrees, and produce martensite on quenching.
		What is the difference in microstructure expected for each case as:
		This will tend to produce a spheroidal microstructure which is very stable and good for dimensional control to minimize or eliminate grinding after heat treat.
	www.eng-tips.com /viewthread.cfm?qid=23870 (356 words)

	Amazon API Demo - Books - Recrystallization and Related Annealing Phenomena - Chris Codes
		Most of the physical metallurgy aspects of metal's deformation and related annealing processes are well presented, including good chapters on textures, hot working and modelling.
		The nice thing about this book it that it also covers texture effects, both in terms of cold-working and annealing, as well as methods of texture measurement and representation (pole figures, invers PF's, ODF's).
		Recrystallization is a phenomenon well known for a long time, but it is only know we can visualize and feel the effects of its importance more clearly with different models and latest development in Technology, as the development of new alloys.
	www.chriscodes.com /store/detail/books/related_result/Book/0080426859 (299 words)

	MAGNETIC INSPECTION OF METAL STRUCTURE, MECHANICAL PROPERTIES AND THEIR DEGRADATION IN SERVICE
		Investigations into the nature of relation between magnetic properties and the structure of cold-and hot-deformed steels after different kinds of annealing have enabled us to recommend that magnetic methods should be applied for evaluating the structural state and mechanical properties of the rolled steel.
		Magnetic methods are widely used for evaluating the quality of sintering in powder metallurgy.
		For estimating the structure and phase composition of products and testing their physicomechanical properties, magnetic methods of nondestructive testing are widely spread in Russia.
	www.ndt.net /abstract/wcndt96/data/340.htm (736 words)

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Topic: Annealing (metallurgy)

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