Doctoral Dissertations


Multiple pass friction stir processing for high strain rate superplasticity and the addition of nanotubes into aluminum through friction stir processing


"Friction stir welding (FSW) is a recently developed process for welding aluminum alloys that has expanded into applications other than welding by the concept of friction stir processing (FSP). Through FSP, it has been found that the properties of materials can be enhanced whether by inserting forged microstructure into a casting, consolidating regions of a part produced by powder metallurgy, or by producing materials with properties which allow them to be formed more easily to name just a few of the applications. The ability of FSP to alter the microstructure of material has lead to its expansion as a method for creating superplastic material...This study examines the use of FSP to make commercial alloys superplastic by altering the microstructure. Not only is the understanding of the single pass process studied in more detail but the effects of using multiple passes of FSP are examined...The use of FSP for the addition of carbon nanotubes into aluminum was also evaluated"--Abstract, leaf iv.


Mishra, Rajiv S.

Committee Member(s)

Miller, F. Scott, 1956-
Krishnamurthy, K.
Kohser, Ronald A.
Newkirk, Joseph William


Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering


National Science Foundation (U.S.)


University of Missouri--Rolla

Publication Date

Summer 2006

Journal article titles appearing in thesis/dissertation

  • High strain rate superplastic properties of 7075 aluminum via friction stir processing
  • Multiple passes of friction stir processing for the creation of superplastic 7075 aluminum
  • Use of friction stir processing prior to cold rolling for enhanced superplasticity in AA5083 Al
  • Enhanced formability of 6061 aluminum through friction stir processing
  • Survivability of single-walled carbon nanotubes during friction stir processing
  • Friction stir processed multi-walled carbon nanotubes


xiii, 160 leaves

Note about bibliography

Includes bibliographical references.


© 2006 Lucie Beth Johannes, All rights reserved.

Document Type

Dissertation - Citation

File Type




Library of Congress Subject Headings

Aluminum alloys -- Welding
Friction welding
Superplastic forming (Metal-work)

Thesis Number

T 9011

Print OCLC #


Link to Catalog Record

Full-text not available: Request this publication directly from Missouri S&T Library or contact your local library.

This document is currently not available here.