Kiyotaka Matsuura
Hokkaido University
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Featured researches published by Kiyotaka Matsuura.
Intermetallics | 2002
Wenbin Cao; Soshu Kirihara; Yoshinari Miyamoto; Kiyotaka Matsuura; Masayuki Kudoh
Abstract A new droplet-based reactive rapid prototyping (RRP) method for making intermetallic parts is demonstrated. This method combines the processes of solid freeform fabrication (SFF) and combustion synthesis (CS). Intermetallic beads are produced by the CS reaction. These synthesized beads are assembled and joined by using the SFF technique with the aid of heat released from exothermic reactions. The intermetallic compound of Ti–Al–Ni is chosen to demonstrate this method. Ni was added to the Ti–Al system to enhance the reaction. Thermodynamics of the Ti–Al–X·NI (X=5, 10, 15 wt.%) system are calculated. The effects of the addition of Ni in powder bed and heating temperature of aluminum droplets on the width and thickness of the reacted area were investigated. As an example, a Ti–Al–Ni intermetallic bar with simple shape was fabricated as a demonstration of RRP.
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2002
Janghwan Oh; Soshu Kirihara; Yoshinari Miyamoto; Kiyotaka Matsuura; Masayuki Kudoh
Abstract Reactive rapid prototyping is a new freeform fabrication method for intermetallics which is a combined process of the combustion synthesis and rapid prototyping. Nickel-aluminide objects are built through microjoining of small nickel-aluminide beads which are formed by ejecting fused aluminum droplets onto a nickel powder bed. In order to obtain fine objects, it is necessary to minimize the bead size and control the products composition. Nickel addition to aluminum was effective to reduce the reaction heat for a decrease in a bead size. Increasing temperature of aluminum droplets to 1000xa0°C tended to form beads being rich in NiAl phase. A newly developed nozzle with double orifices could eject aluminum droplets uniformly and continuously, resulting in forming a thin line of nickel-aluminide with ∼0.7 mm in width and a simple 2D structure with a few pores and cracks.
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2005
Masayuki Terakubo; Janghwan Oh; Soshu Kirihara; Yoshinari Miyamoto; Kiyotaka Matsuura; Masayuki Kudoh
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2004
Kiyotaka Matsuura; Tatsuya Ohmi; Masayuki Kudoh; Heishichiro Takahashi; Hiroshi Kinoshita; Kazuhiro Suzuki
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2004
Yoshimi Watanabe; Satoru Watanabe; Kiyotaka Matsuura
Materials Transactions | 2003
Kiyotaka Matsuura; Takayuki Koyanagi; Tatsuya Ohmi; Masayuki Kudoh
Isij International | 2004
Kiyotaka Matsuura; Yoshimi Watanabe; Yasushi Hirashima
Journal of The Society of Materials Science, Japan | 2002
Janghwan Oh; Soshu Kirihara; Yoshinari Miyamoto; Kiyotaka Matsuura; Masayuki Kudoh
Archive | 2004
Tatsuya Ohmi; Kiyotaka Matsuura; Masayuki Kudoh
Transactions of J W R I | 2004
Yoshinari Miyamoto; Masayuki Terakubo; Janghwan Oh; Soshu Kirihara; Kiyotaka Matsuura; Masayuki Kudoh