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Materials 2010, 3(9), 4639-4656; doi:10.3390/ma3094639

Fabrication of Al-Al3Ti/Ti3Al Functionally Graded Materials under a Centrifugal Force

Department of Engineering Physics, Electronics and Mechanics, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
Department of Manufacturing Technology, Central Metallurgical Research & Development Institute, P.O.BOX 87, Helwan, Cairo, Egypt
Author to whom correspondence should be addressed.
Received: 21 July 2010 / Revised: 31 August 2010 / Accepted: 6 September 2010 / Published: 8 September 2010
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Fabrication of Al-Al3Ti functionally graded materials (FGMs) under the centrifugal force has recently attracted some attention. The controlled compositional gradient of the fabricated FGMs, the low cost of the process, and the good mold filling, are the main advantages of the centrifugal method (CM). Using the conventional CM techniques such as the centrifugal solid-particle method and centrifugal in-situ method, FGMs rings with gradually distributed properties could be achieved. As a more practical choice, the centrifugal mixed-powder method (CMPM) was recently proposed to obtain FGMs containing nano-particles selectively dispersed in the outer surface of the fabricated parts. However, if a control of the particles morphology, compound formulas or sizes, is desired, another CM technique is favored. As a development of CMPM, our novel reaction centrifugal mixed-powder method (RCMPM) has been presented. Using RCMPM, Al‑Al3Ti/Ti3Al FGMs with good surface properties and temperature controlled compositional gradient could be achieved. In this short review, this novel method will be discussed in detail and the effect of RCMPM processing temperature on the reinforcement particles morphology, size and distribution through the fabricated samples, will be reviewed.
Keywords: functionally graded materials (FGMs); centrifugal method (CM); reaction mixed-powder method functionally graded materials (FGMs); centrifugal method (CM); reaction mixed-powder method
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

El-Hadad, S.; Sato, H.; Miura-Fujiwara, E.; Watanabe, Y. Fabrication of Al-Al3Ti/Ti3Al Functionally Graded Materials under a Centrifugal Force. Materials 2010, 3, 4639-4656.

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