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

Author

Siddharth R. Sharma

Abstract

"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, pages 29-30.

Advisor(s)

Mishra, Rajiv S.

Committee Member(s)

Newkirk, Joseph William
Miller, F. Scott, 1956-
O'Keefe, Matthew
Dharani, Lokeswarappa R.

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering

Publisher

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

Pagination

xvi, 123 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2005 Siddharth Ramkrishna Sharma, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type

text

Language

English

Subject Headings

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

Thesis Number

T 8845

Print OCLC #

75189224

Electronic OCLC #

1084742571

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

Recommended Citation

Sharma, Siddharth R., "Microstructure modification for improved mechanical properties in A356 Al using friction stir processing" (2005). Doctoral Dissertations. 1646.
https://scholarsmine.mst.edu/doctoral_dissertations/1646