Masters Theses

Abstract

"The precipitation process in a Mg - 3.5 wt. % Th - 1. wt. % Mn alloy during aging at 260⁰, 350⁰ and 400⁰C was determined principally by transmission electron microscopy. At 350⁰ and 400⁰C, general precipitation of the equilibrium Mg₄Th phase moderately hardens the alloy. No transition lattice of this phase was seen. The Mg₄Th precipitate forms initially as disc shaped plates parallel either to the prism or basal plane of the matrix...During prolonged aging at 400⁰C the plates lengthen into long laths on either of the above planes in the close packed direction...At 260⁰C an unidentified G. P. zone appearing precipitate forms"--Abstract, page ii.

Advisor(s)

Clark, J. B. (J. Beverley)

Committee Member(s)

Weart, Harry W.
Ownby, Paul Darrell

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Publisher

University of Missouri--Rolla

Publication Date

1969

Pagination

vii, 36 pages

Note about bibliography

Includes bibliographical references (pages 21-23).

Rights

© 1969 Adolf Chun-Chiung Huang, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Magnesium alloys -- Experiments
Microhardness -- Experiments
Precipitation hardening

Thesis Number

T 2267

Print OCLC #

6009439

Electronic OCLC #

809252935

Included in

Metallurgy Commons

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