Laser metal deposition of functionally graded copper and steel

Author

Vinay Kadekar

Keywords and Phrases

Laser Metal Deposition; Functionally Graded Material; Design of Experiments; Bending Test; Thermal Conductivity

Abstract

"The Laser Aided Manufacturing Processes (LAMP) developed at the University of Missouri--Rolla is used to fabricate three dimensional metal parts. The powdered metal material are melted using a laser onto a substrate. The CAD model is basically converted to a format called STL files where the model is split into numerous triangles. This facilitates the slicing of the CAD model. Toolpath generation software is used to generate the deposition toolpath from the STL file. The laser scans the substrate and deposits the part according to the slices and slowly finishes the part to near net shape. This thesis describes the optimization of the process parameters for the deposition of functionally graded copper and tool steel. Experiments were conducted to optimize the parameters such as, laser power, powder flow rate, outer gas, feed rate for different percentage of copper and steel. Four point bending test was carried out on the laser deposited samples to study the interfacial strength of the deposit. Microstructure of the tested samples is also discussed"--Abstract, page iv.

Advisor(s)

Liou, Frank W.

Committee Member(s)

Landers, Robert G.
Hering, Roger H.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Summer 2005

Journal article titles appearing in thesis/dissertation

• Experimental investigation of laser metal deposition of functionally graded copper and steel

Pagination

ix, 20 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2005 Vinay Acharya Kadekar, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Pulsed laser deposition
Thermal conductivity
Powder metallurgy
Manufacturing processes

Thesis Number

T 8798

Print OCLC #

63126778

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

Kadekar, Vinay, "Laser metal deposition of functionally graded copper and steel" (2005). Masters Theses. 3739.
https://scholarsmine.mst.edu/masters_theses/3739