Doctoral Dissertations

Abstract

"The morphology of cellular precipitation in Al-29.8wt%Ag alloy has been investigated in bulk specimens by transmission electron microscopy and in solution treated specimens by means of hot stage microscopy. Both cellular and general precipitation were observed to occur simultaneously in quench-aged and isothermally aged alloys. By studying the early stages of precipitation in the hot stage, the mechanism for the growth of cells in Al-Ag alloys was developed. According to this mechanism, the grain boundary allotriomorphs begin to form, the boundary then interacts with the allotriomorphs by bowing, and then either trailing precipitation forms on the allotriomorphs or new lamellae form at the advancing interface"--Abstract, page iii.

Advisor(s)

Clark, J. B. (J. Beverley)

Committee Member(s)

Weart, H. W. (Harry Waldron), 1927-
Wuttig, Manfred
O'Keefe, T. J. (Thomas J.)
Sorrell, Charles A.

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering

Sponsor(s)

National Science Foundation (U.S.)

Comments

Funded by National Science Foundation Grants G. K. 10467 and G. H. 32579

Publisher

University of Missouri--Rolla

Publication Date

1972

Pagination

viii, 39 pages

Note about bibliography

Includes bibliographical references (pages 24-25).

Rights

© 1972 Santiago Ibarra, Jr., All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Aluminum-silver alloys -- Metallurgy
Grain boundaries
Metals -- Heat treatment

Thesis Number

T 2782

Print OCLC #

6036861

Electronic OCLC #

904055798

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