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

Research output: Contribution to journalConference articlepeer-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 languageEnglish
Pages (from-to)2555-2558
Number of pages4
JournalMaterials Science Forum
Volume475-479
Issue numberIV
DOIs
Publication statusPublished - 2005 Jan 1
EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
Duration: 2004 Nov 22004 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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