Principles of Metallography

 
9781236642899: Principles of Metallography

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...3 and the system becomes non-variant. Neither the temperature of the mixture nor the composition of the three phases can change until one of the three phases has disappeared. The temperature cannot fall until all the liquid phase, E has solidified nor can it rise without the disappearance of either A or B. It must not be understood that the mixture can have only the composition represented by the point E. It may have any composition along the line CD but, in this case, the composition of each phase remains the same, the difference in original composition producing changes in the relative amounts of the three. The line CD, therefore, is a line of non-variant equilibrium. One of the principle uses of the Phase Rule is to determine whether or not true equilibrium has been reached. It is evident that, since an alloy with less than zero degrees of freedom is an impossibility, there can never be more than two crystal phases in contact with, or separating from, a two component liquid metal. Therefore, in a case like that indicated in Fig. 26, p. 53, and illustrated in Fig. 28, p. 55, the presence of three phases, in the microscopic section of the solid alloy, is a positive indication of incomplete equilibrium. CHAPTER IV THE NON-FERROUS ALLOYS OF TECHNICAL IMPORTANCE No attempt will be made to describe or even to name the large and constantly increasing number of nonferrous alloys used in practice. Certain of them are of such great technical interest and importance, however, that their properties must be considered. Many have been referred to in connection with the equilibrium diagrams and others are of such special character that their consideration is out of place here. The majority of the important non-ferrous alloys not yet discussed fall into one...

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Robert Seaton Williams
Editorial: RareBooksClub
ISBN 10: 1236642899 ISBN 13: 9781236642899
Nuevos Paperback Cantidad: > 20
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BuySomeBooks
(Las Vegas, NV, Estados Unidos de America)
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Descripción RareBooksClub. Paperback. Estado de conservación: New. This item is printed on demand. Paperback. 34 pages. Dimensions: 9.3in. x 7.2in. x 0.2in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: . . . 3 and the system becomes non-variant. Neither the temperature of the mixture nor the composition of the three phases can change until one of the three phases has disappeared. The temperature cannot fall until all the liquid phase, E has solidified nor can it rise without the disappearance of either A or B. It must not be understood that the mixture can have only the composition represented by the point E. It may have any composition along the line CD but, in this case, the composition of each phase remains the same, the difference in original composition producing changes in the relative amounts of the three. The line CD, therefore, is a line of non-variant equilibrium. One of the principle uses of the Phase Rule is to determine whether or not true equilibrium has been reached. It is evident that, since an alloy with less than zero degrees of freedom is an impossibility, there can never be more than two crystal phases in contact with, or separating from, a two component liquid metal. Therefore, in a case like that indicated in Fig. 26, p. 53, and illustrated in Fig. 28, p. 55, the presence of three phases, in the microscopic section of the solid alloy, is a positive indication of incomplete equilibrium. CHAPTER IV THE NON-FERROUS ALLOYS OF TECHNICAL IMPORTANCE No attempt will be made to describe or even to name the large and constantly increasing number of nonferrous alloys used in practice. Certain of them are of such great technical interest and importance, however, that their properties must be considered. Many have been referred to in connection with the equilibrium diagrams and others are of such special character that their consideration is out of place here. The majority of the important non-ferrous alloys not yet discussed fall into one. . . This item ships from La Vergne,TN. Paperback. Nº de ref. de la librería 9781236642899

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2.

Williams, Robert Seaton
Editorial: RareBooksClub.com
ISBN 10: 1236642899 ISBN 13: 9781236642899
Nuevos Cantidad: 1
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Phatpocket Limited
(Waltham Abbey, HERTS, Reino Unido)
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Descripción RareBooksClub.com. Estado de conservación: New. New. This is a reproduction of an out of print title. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. Book is new and unread but may have minor shelf wear. Nº de ref. de la librería Z1-S-037-02337

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