Masters Theses


Reliablistic design of sand cast Al F357 components with improved properties using FSP

Keywords and Phrases

Friction stir processing (FSP)


"Friction stir welding (FSW) was invented as a solid-state joining process for welding materials at temperatures lower than the melting point of the material. Friction stir processing (FSP) was developed as a modification to FSW, and is used to improve mechanical properties locally through microstructural refinement. FSP uses a non-consumable rotating tool with a pin and shoulder inserted into the material to be processed and traversed along the path of interest. As a result of tool action and subsequent material movement, a processed region of refined microstructure is created along the traverse direction. The mechanical properties of the material in the processed region improve as a result of the microstructural refinement. The advancing technologies and increasing complexities in operating conditions of components necessitate design and development of economical, energy-efficient and high performance materials in various fields. Meeting an overall objective of obtaining reliable properties with the cost constraints is yet a challenge in many materials. This has broadened the scope of employing newer technologies like FSP to improve the properties of existing materials cost effectively. However, a major challenge for using such improved materials after FSP in actual applications demands an effective elimination or reduction in property variations to obtain reliable performance. The present work investigated the effectiveness of FSP in surpassing such a challenge in sand cast Al F357 alloy"--Abstract, leaf iv.


Mishra, Rajiv S.

Committee Member(s)

Stone, Robert B.
Kohser, Ronald A.


Materials Science and Engineering

Degree Name

M.S. in Materials Science and Engineering


NSF I/UCRC Intelligent Maintenance Systems Center


University of Missouri--Rolla

Publication Date

Fall 2007

Journal article titles appearing in thesis/dissertation

  • Reliablistic property analysis and prediction of fatigue life in FSPed Al F357 alloy and microstructural influences
  • Developing a reliability-based design optimization model for FSP zone in products through a functional methodology


xii, 97 leaves

Note about bibliography

Includes bibliographical references (pages 50-55).


© 2007 Abhilash Raveendranathan, All rights reserved.

Document Type

Thesis - Citation

File Type




Library of Congress Subject Headings

Aluminum alloys -- Testing
Friction welding
Sand casting

Thesis Number

T 9285

Print OCLC #


Link to Catalog Record

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