(31) S.M. Seo, I.S. Kim, J.H. Lee, C.Y. Jo, H. Miyahara and K. Ogi,Grain Structure Control during Single Crystal Solidification of Ni-Base Superalloy,Proceedings of 10th Asian Foundry Congress,pp.406-413,2008.05.

(33) Seong-Moon Seo, In-Soo Kim, Je-Hyun Lee, Chang-Yong Jo, Hirofumi Miyahara, and Keisaku Ogi,Microstructural Evolution in Directionally Solidified Ni-Base Superalloy IN792+Hf,Journal of Materials Science and Technology,24(1), pp.110-114,2008.01.

(34) Nader El-bagoury, Adel Nofal, Kauro Yamamoto, Hirofumi Miyahara and Kiesaku Ogi,Contribution to the Development of Rhenium Alloyed Inconel 718 Alloy,Proceedings of 12th International Conference on Aerospace Sciences and Aviation Technology,2007.12.

(40) Hirofumi Miyahara, Takeuchi Hirohisa, Nader El-Bagoury, Kozo Wakasugi, Kaoru Yamamoto1 and Keisaku Ogi,Influences of Solidification and Thermal Treatment on Mechanical Properties of Nickel Base Superalloy, Inconel 718,Proceedings of the Asian Foundry Congress 2007,2007.05.

(41) Seong-Moon Seo, In-Soo Kim, Je-Hyun Lee, Chang-Yong Jo, Hirofumi Miyahara, and Keisaku Ogi,Microstructural Evolution in Directionally Solidified Ni-Base Superalloy IN792+Hf,Proceedings of the Asian Foundry Congress 2007,2007.05.

(42) Seong-Moon Seo, In-Soo Kim, Je-Hyun Lee, Chang-Yong Jo, Hirofumi Miyahara, and Keisaku Ogi,Eta Phase and Boride Formation in Directionally Solidified Ni-Base Superalloy IN792+Hf,Metallurgical and Materials Transactions A,vol. 38A, No.4, pp.883-893,2007.04.

(48) Nader El-Bagoury Toru Matsuba Kaoru Yamamoto Hirofumi Miyahara and Keisaku Ogi,Influence of Heat Treatment on the Distribution of Ni2Nb and Microsegregation in Cast Inconel 718 Alloy,Materials Transactions,Vol.46,No.11,2478-2483,Vol.46 No.11 pp.2478-2483,2005.11.

(52) Nader El-Bagoury Kaoru Yamamoto Hirofumi Miyahara and Keisaku Ogi,Influence of Rhenium and Cooling Rate on the Solidification of Ni Base Superalloys Inconel 718,Materials Transactions,Vol.46,No.5,909-915,Vol.46 No.5 pp.909-915,2005.05.

(54) Nader El-Bagoury Kaoru Yamamoto Hirofumi Miyahara and Keisaku Ogi,Influence of Rhenium and Cooling Rate on the Solidification of Ni Base Superalloys Inconel 718,Proc. of the 2nd Korea-Japan Conference for Young Foundry Engineers,Vol. No. pp.187-192,2005.01.

(63) Seung-Hun Kang Kaoru Yamamoto Hirofumi Miyahara and Keisaku Ogi,Grain Refinement of Ni-base Superalloy INCONEL718 in Investment Casting,Proc. of the 1st Korea-Japan Conference for Young Foundry Engineers,Vol. No. pp.183-186,2003.04.

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