Masters Theses


Manisha Dixit


"Microstructure, properties, processing and performance are mutually dependant factors that affect the end properties of any material. Materials are being designed in an intelligent manner through conscious tailoring of the microstructure to achieve desired properties and performance expected of any material. This is the motivating concept for the work undertaken as described in this thesis.

The first two papers involve the incorporation of smart materials like BaTiO3 and NiTi in an aluminum 1100 matrix and prepare composites utilizing friction stir processing. The aim has been to synergize the smart responses of these particles with inherent properties of aluminum 1100 to achieve improved mechanical properties. The first paper is related to incorporation of micro and nano sized powders of BaTiO3 in aluminum 1100 to utilize the piezoelectric effect while the second paper aims to utilize shape memory effect to improve mechanical properties of the matrix. The microstructure-property correlations in these composites have been studied utilizing various characterizations tools and some of the mechanical properties have been modeled and validated.

The third paper involved preparation of databases and analysis of structure-property correlations in high-strength aluminum alloys Al 7050 and Al 7055. Models for mechanical properties and fracture toughness have been validated and areas of optimum properties for these alloys have been mapped out.

The central idea for the three papers has been to explore the structure-property correlations in materials and utilize the understanding to design improved and better materials"--Abstract, page iv.


Mishra, Rajiv S.

Committee Member(s)

Newkirk, Joseph William
Krishnamurthy, K.


Materials Science and Engineering

Degree Name

M.S. in Materials Science and Engineering


University of Missouri--Rolla

Publication Date

Fall 2006

Journal article titles appearing in thesis/dissertation

  • Properties of friction stirred BaTiO3 reinforced aluminum matrix
  • Properties of friction stir processed-Al 1100-NiTi composite
  • Structure property correlations in Al 7050 and Al 7055 high-strength aluminum alloys


xi, 102 pages

Note about bibliography

Includes bibliographical references.


© 2006 Manisha Dixit, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Subject Headings

Aluminum alloys
Barium compounds
Friction welding
Nickel alloys
Shape memory alloys
Titanium alloys

Thesis Number

T 9021

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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