Theory of ordering transformations in metals and minerals

Thumbnail image of item number 1 in: 'Theory of ordering transformations in metals and minerals'.
Thumbnail image of item number 2 in: 'Theory of ordering transformations in metals and minerals'.
Thumbnail image of item number 3 in: 'Theory of ordering transformations in metals and minerals'.
Thumbnail image of item number 4 in: 'Theory of ordering transformations in metals and minerals'.
Showing 1-4 of 118 pages in this dissertation.

PDF Version Also Available for Download.

Description

This dissertation presents an investigation of ordering in FCC based systems using the pair potential approximation in the ground state and mean field limits. The theoretical approach is used to explain the occurrence of observed equilibrium phases and characteristics of thermodynamic instabilities, in particular, spinodal ordering and decomposition. It is shown that the stability of non-integer domain sizes in long period superstructures such as Al{sub 3}Ti and Ag{sub 3}Mg may result from the tendency of a system to reduce the number of non-dominant ordering waves, thus producing domain sizes that have rational fraction form n/m. This conclusion is used to … continued below

Physical Description

107 pages

Creation Information

Lindsey, Timothy Francis July 1, 1991.

Context

This dissertation is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 41 times. More information about this dissertation can be viewed below.

Who

People and organizations associated with either the creation of this dissertation or its content.

Author

  • Lindsey, Timothy Francis California Univ., Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering Lawrence Berkeley Lab., CA (United States)

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

About | Browse this Partner

Contact Us

Corrections Questions

What

Descriptive information to help identify this dissertation. Follow the links below to find similar items on the Digital Library.

Degree Information

Description

This dissertation presents an investigation of ordering in FCC based systems using the pair potential approximation in the ground state and mean field limits. The theoretical approach is used to explain the occurrence of observed equilibrium phases and characteristics of thermodynamic instabilities, in particular, spinodal ordering and decomposition. It is shown that the stability of non-integer domain sizes in long period superstructures such as Al{sub 3}Ti and Ag{sub 3}Mg may result from the tendency of a system to reduce the number of non-dominant ordering waves, thus producing domain sizes that have rational fraction form n/m. This conclusion is used to explain the domain size stability with respect to variations in temperature and electron concentration. The cation ordering in the precipitate phases in calcite and dolomite is analyzed by analogy with ordering in FCC based metals. The ordered phases in calcite and dolomite are shown to be consistent with pair potential minima at {l brace}100{r brace} and {l brace}1/2, 1/2, 1/2{r brace} positions in reciprocal space respectively. 32 refs., 6 figs.

Physical Description

107 pages

Notes

OSTI; NTIS; GPO Dep.

Other Information: Thesis (Ph.D.)

Language

Item Type

Identifier

Unique identifying numbers for this dissertation in the Digital Library or other systems.

Collections

This dissertation is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

About | Browse this Collection

What responsibilities do I have when using this dissertation?

Digital Files

When

Dates and time periods associated with this dissertation.

Creation Date

  • July 1, 1991

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

Description Last Updated

  • Oct. 29, 2024, 7:13 p.m.

Usage Statistics

When was this dissertation last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 41
More Statistics

Interact With This Dissertation

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Theory of ordering transformations in metals and minerals'.
Thumbnail image of item number 2 in: 'Theory of ordering transformations in metals and minerals'.
Thumbnail image of item number 3 in: 'Theory of ordering transformations in metals and minerals'.
Thumbnail image of item number 4 in: 'Theory of ordering transformations in metals and minerals'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Links for Robots

Helpful links in machine-readable formats.

Archival Resource Key (ARK)

International Image Interoperability Framework (IIIF)

Metadata Formats

Images

URLs

Stats

Lindsey, Timothy Francis. Theory of ordering transformations in metals and minerals, dissertation, July 1, 1991; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc1056372/: accessed December 14, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

Back to Top of Screen