Effects of pouring temperature on the solidification structure of INCONEL718 investment casting

Seung Hun Kang; Keisaku Ogi; Koichi Anzai; Hiroki Yokota; Hiroshi Honda; Isamu Takahashi; Makoto Sirai; Shinichiro Kiyoto

doi:10.4028/0-87849-960-1.2555

Effects of pouring temperature on the solidification structure of INCONEL718 investment casting

Seung Hun Kang, Keisaku Ogi, Koichi Anzai, Hiroki Yokota, Hiroshi Honda, Isamu Takahashi, Makoto Sirai, Shinichiro Kiyoto

ENG - Graduate School of Engineering (Common)

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

As a finer grain structure could impart better weldability and mechanical properties, the effects of various casting parameters on the grain structure of primary 7 were examined for the investment casting of Inconel718. The grain size of cast specimen became smaller as the superheat of pouring melt decreased from 11 OK to 20K, and the superheat below 20K resulted in a very fine grain structure. The mold dressed with cobalt-aluminate (CoO-Al₂O ₃) gave a slightly finer grain structure than that with a conventional facing material. A thin section casting poured at a lower temperature showed a fine grain structure and high soundness, and the computer simulation confirmed the low temperature pouring process could be successfully applied to the investment casting.

Original language	English
Pages (from-to)	2555-2558
Number of pages	4
Journal	Materials Science Forum
Volume	475-479
Issue number	IV
DOIs	https://doi.org/10.4028/0-87849-960-1.2555
Publication status	Published - 2005 Jan 1
Event	PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China Duration: 2004 Nov 2 → 2004 Nov 5

Keywords

Grain refinement
Inconel718
Investment casting
Ni-based superalloy
Simulation
Solidification

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Effects of pouring temperature on the solidification structure of INCONEL718 investment casting. / Kang, Seung Hun; Ogi, Keisaku; Anzai, Koichi; Yokota, Hiroki; Honda, Hiroshi; Takahashi, Isamu; Sirai, Makoto; Kiyoto, Shinichiro.

In: Materials Science Forum, Vol. 475-479, No. IV, 01.01.2005, p. 2555-2558.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "As a finer grain structure could impart better weldability and mechanical properties, the effects of various casting parameters on the grain structure of primary 7 were examined for the investment casting of Inconel718. The grain size of cast specimen became smaller as the superheat of pouring melt decreased from 11 OK to 20K, and the superheat below 20K resulted in a very fine grain structure. The mold dressed with cobalt-aluminate (CoO-Al2O 3) gave a slightly finer grain structure than that with a conventional facing material. A thin section casting poured at a lower temperature showed a fine grain structure and high soundness, and the computer simulation confirmed the low temperature pouring process could be successfully applied to the investment casting.",

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AU - Kang, Seung Hun

AU - Ogi, Keisaku

AU - Anzai, Koichi

AU - Yokota, Hiroki

AU - Honda, Hiroshi

AU - Takahashi, Isamu

AU - Sirai, Makoto

AU - Kiyoto, Shinichiro

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N2 - As a finer grain structure could impart better weldability and mechanical properties, the effects of various casting parameters on the grain structure of primary 7 were examined for the investment casting of Inconel718. The grain size of cast specimen became smaller as the superheat of pouring melt decreased from 11 OK to 20K, and the superheat below 20K resulted in a very fine grain structure. The mold dressed with cobalt-aluminate (CoO-Al2O 3) gave a slightly finer grain structure than that with a conventional facing material. A thin section casting poured at a lower temperature showed a fine grain structure and high soundness, and the computer simulation confirmed the low temperature pouring process could be successfully applied to the investment casting.

AB - As a finer grain structure could impart better weldability and mechanical properties, the effects of various casting parameters on the grain structure of primary 7 were examined for the investment casting of Inconel718. The grain size of cast specimen became smaller as the superheat of pouring melt decreased from 11 OK to 20K, and the superheat below 20K resulted in a very fine grain structure. The mold dressed with cobalt-aluminate (CoO-Al2O 3) gave a slightly finer grain structure than that with a conventional facing material. A thin section casting poured at a lower temperature showed a fine grain structure and high soundness, and the computer simulation confirmed the low temperature pouring process could be successfully applied to the investment casting.

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KW - Investment casting

KW - Ni-based superalloy

KW - Simulation

KW - Solidification

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