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The Mathematical Model And Analysis For The Amorphous Formation Regularity Of Ternary Alloys By MA Based On Experimental Data

Posted on:2002-10-24Degree:MasterType:Thesis
Country:ChinaCandidate:Z F MingFull Text:PDF
GTID:2121360032950504Subject:Applied Mathematics
Abstract/Summary:PDF Full Text Request
Mechanical Alloying (MA) is one of the important technics for manufac-turing amorphous synthesiziug matierials on solid case. The so-called MAis a ball milling process where a powders mixture placed in the ball millis subject to high energy collisiou from the balls. There are many indica-tions that the technic has bright prospect in theory-researching and newmatierial-manufacturing because of its prospective good qualities compar-ing with other technics.The technic of MA that has developed in ten years is one of the veryactive discussion. The fundamental theory and technology correlated withthe MA has still much room for improvement. Researching aud searchingin theory for the law of MA leading to amorphous has certain significancefor guiding experriment. In view of the results that have been seekedby many scholars for MA leading dual alloy to amorphous. this thesishas deeply reseached the laws of MA leading trinal alloy to amorphouson condition that three Miedema parameters, φ, and R have beenchoosed to construct two alld three-dimentionnal chemistry coordinate. anddecided the conditions of 3IA leading trillal alloy to amorphotls. meann-ile.f1om atomic effect each other and thermod}-namics and dynamics pointof x-iexx- allal}-zed the ph}sics meanillg of above PArameters for describillg3IA leading trinal allo}- to amorphous and pointed out the collnection thoseparallleters xx-ith the condition txhat solid reaction leading amorphous need.This thesis can be divided into three sections. The first chapter. in-troduction. has introduced the MA theory, Miedema theory and amoroustheor}-: The second chapter has studied the laws of MA leading trillal al-lo}- to a111orphous. alld f1om mathematica point df x,ieu' differentiated thetxx'o parts of amorphous and cr}-stal: The third chapter has set forth thequestions of xx'hich the AIA theory is await to be more deeply reseach. andpointed out the significance of studding amorphous' formming theor}- forpredictiug and developing amorphous matierials.
Keywords/Search Tags:Mechanical Alloying, Miedema theory, chemistry powerelectronsurname density
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