Paper Title:
Three-Dimensional Printing of Shape Memory Alloys
  Abstract

A novel variant of the three-dimensional printing technique has been developed and used to manufacture NiTi parts. Instead of metal powder the process uses granules, which consist of a mixture of metal powder and organic binder. These granules are spread on a working table. Then a solvent is dispensed with a printer head to consolidate a selected area of the granule bed and the table is moved down. The "solvent on granule" printing process is repeated until a threedimensional green body is obtained. The green part is finally debinded and sintered to obtain a dense and fully metallic part. NiTi parts have been successfully produced by this technique with densities of about 95% of the theoretical density. Detailed information on the microstructure has been obtained by X ray diffraction. Sintered parts exhibit shape memory effect, which has been measured during thermal cycling under tensile stress.

  Info
Periodical
Materials Science Forum (Volumes 534-536)
Edited by
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages
477-480
DOI
10.4028/www.scientific.net/MSF.534-536.477
Citation
E. Carreño-Morelli, S. Martinerie, J. E. Bidaux, "Three-Dimensional Printing of Shape Memory Alloys", Materials Science Forum, Vols. 534-536, pp. 477-480, 2007
Online since
January 2007
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Price
$32.00
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