Doctoral Dissertations


Microstructure modification for improved mechanical properties in A356 Al using friction stir processing


"This research work was initiated to develop FSP as a tool to locally modify the microstructures in various aluminum alloys and study the changes in the mechanical properties of the modified regions...This dissertation work is divided into four papers. The first paper attempts to understand the microstructure evolution during FSP of A356. The second paper examines the influence of FSP on high cycle fatigue behavior of A356. The third paper examines the influence of processing parameters on process loads, temperature, microstructure and the corresponding static mechanical properties. The fourth and final paper deals with crack growth rates in FSP A356"--Research Objective, leaves 29-30.


Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering


University of Missouri--Rolla

Publication Date

Fall 2005

Journal article titles appearing in thesis/dissertation

  • Investigation of microstructure and mechanical properties of friction stir processed A356
  • Effect of friction stir processing on fatigue behavior of A356 alloy
  • Influence of processing parameters on microstructure and mechanical properties during friction stir processing of A356
  • Fatigue crack growth behavior of friction stir processed A356 Al


xvi, 123 leaves

Note about bibliography

Includes bibliographical references.


© 2005 Siddharth Ramkrishna Sharma, All rights reserved.

Document Type

Dissertation - Citation

File Type




Library of Congress Subject Headings

Aluminum alloys -- Fatigue
Aluminum alloys -- Cracking
Friction welding

Thesis Number

T 8845

Print OCLC #


Link to Catalog Record

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