This paper presents the investigation of the macrostructure, microstructure, and solidification structure of a 316L/15% nickel coated TiC metal matrix composite produced by the laser engineered net shaping (LENS™) process. The focus of this work was to (1) identify the solidification structure and to estimate growth/cooling rates at the solid/liquid interface, (2) identify and quantify discontinuities in the build structure, and (3) examine the effect of solidification and thermal history on the sample microstructure to further the understanding of the LENS process. A Numerical method was also developed to examine the influence of material type and LENS™ process parameters on the forming of the specific microstructures from thermodynamics and fluid dynamics point of view. Samples of 316L stainless steel were examined, microstructures of samples were used to estimate the corresponding cooling rate, and the cooling rate was compared with the results of numerical modeling. The computational results show reasonable agreement with experimentally determined cooling rate.
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October 2014
Research-Article
Laser Engineered Net Shaping Process for 316L/15% Nickel Coated Titanium Carbide Metal Matrix Composite
R. S. Amano,
R. S. Amano
1
Professor
Fellow ASME
Department of Mechanical Engineering,
e-mail: amano@uwm.edu
Fellow ASME
Department of Mechanical Engineering,
University of Wisconsin-Milwaukee
,115 E. Reindl Way
,Milwaukee, WI 53201
e-mail: amano@uwm.edu
1Corresponding author.
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S. Marek,
S. Marek
Materials Science and Engineering Department,
e-mail: smarek@lucasmilhaupt.com
University of Wisconsin-Milwaukee
,3200 North Cramer Street
,Milwaukee, WI 53201
e-mail: smarek@lucasmilhaupt.com
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B. F. Schultz,
B. F. Schultz
Materials Science and Engineering Department,
e-mail: bfs2@uwm.edu
University of Wisconsin-Milwaukee
,3200 North Cramer Street
,Milwaukee, WI 53201
e-mail: bfs2@uwm.edu
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P. K. Rohatgi
P. K. Rohatgi
Wisconsin Distinguished Professor
Fellow ASME
Materials Science and Engineering Department,
e-mail: prohatgi@uwm.edu
Fellow ASME
Materials Science and Engineering Department,
University of Wisconsin-Milwaukee
,3200 North Cramer Street
,Milwaukee, WI 53201
e-mail: prohatgi@uwm.edu
Search for other works by this author on:
R. S. Amano
Professor
Fellow ASME
Department of Mechanical Engineering,
e-mail: amano@uwm.edu
Fellow ASME
Department of Mechanical Engineering,
University of Wisconsin-Milwaukee
,115 E. Reindl Way
,Milwaukee, WI 53201
e-mail: amano@uwm.edu
S. Marek
Materials Science and Engineering Department,
e-mail: smarek@lucasmilhaupt.com
University of Wisconsin-Milwaukee
,3200 North Cramer Street
,Milwaukee, WI 53201
e-mail: smarek@lucasmilhaupt.com
B. F. Schultz
Materials Science and Engineering Department,
e-mail: bfs2@uwm.edu
University of Wisconsin-Milwaukee
,3200 North Cramer Street
,Milwaukee, WI 53201
e-mail: bfs2@uwm.edu
P. K. Rohatgi
Wisconsin Distinguished Professor
Fellow ASME
Materials Science and Engineering Department,
e-mail: prohatgi@uwm.edu
Fellow ASME
Materials Science and Engineering Department,
University of Wisconsin-Milwaukee
,3200 North Cramer Street
,Milwaukee, WI 53201
e-mail: prohatgi@uwm.edu
1Corresponding author.
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received September 6, 2013; final manuscript received May 23, 2014; published online August 6, 2014. Assoc. Editor: Jack Zhou.
J. Manuf. Sci. Eng. Oct 2014, 136(5): 051007 (11 pages)
Published Online: August 6, 2014
Article history
Received:
September 6, 2013
Revision Received:
May 23, 2014
Citation
Amano, R. S., Marek, S., Schultz, B. F., and Rohatgi, P. K. (August 6, 2014). "Laser Engineered Net Shaping Process for 316L/15% Nickel Coated Titanium Carbide Metal Matrix Composite." ASME. J. Manuf. Sci. Eng. October 2014; 136(5): 051007. https://doi.org/10.1115/1.4027758
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