Apparatus And Method For Producing Single Crystal Metallic Objects

Patent · Tue Mar 14 00:00:00 EST 2006

OSTI ID:880169

Huang, Shyh-Chin ^[1]; Rutkowski, Stephen Francis ^[2]; Petterson, Roger John ^[3]; Svec, Paul Steven ^[4]

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1. Latham, NY
2. Duanesburg, NY
3. Fultonville, NY
4. Scotia, NY

A mold is provided for enabling casting of single crystal metallic articles including a part-defining cavity, a sorter passage positioned vertically beneath and in fluid communication with the part-defining cavity, and a seed cavity positioned vertically beneath and in fluid communication with the sorter passage. The sorter passage includes a shape suitable for encouraging a single crystal structure in solidifying molten metal. Additionally, a portion of the mold between the sorter passage and the part-defining cavity includes a notch for facilitating breakage of a cast article proximate the notch during thermal stress build-up, so as to prevent mold breakage or the inclusion of part defects.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: General Electric Company (Niskayuna, NY)
• Patent Number(s): US 7,011,141
• Application Number: 10/652906
• OSTI ID: 880169
• Country of Publication: United States
• Language: English