发明授权
- 专利标题： Unidirectional solidification process and apparatus and single-crystal seed therefor
- 专利标题（中）： 单向凝固工艺及设备及单晶种子
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申请号： US13851075申请日： 2013-03-26
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公开(公告)号： US09144842B2公开(公告)日： 2015-09-29
- 发明人: Ganjiang Feng , Gregory Keith Bouse , Kenneth Burrell Potter , Andrew John Elliott , Shan Liu
- 申请人： Ganjiang Feng , Gregory Keith Bouse , Kenneth Burrell Potter , Andrew John Elliott , Shan Liu
- 申请人地址： US NY Schenectady
- 专利权人： General Electric Company
- 当前专利权人： General Electric Company
- 当前专利权人地址： US NY Schenectady
- 代理商 Ernest G. Cusick; Gary M. Hartman; Michael D. Winter
- 主分类号： B22D27/04
- IPC分类号： B22D27/04 ; C30B11/14 ; C30B29/52
摘要：
A single-crystal seed, apparatus and process for producing a casting having a single-crystal (SX) microstructure. The seed has a geometry that includes a vertex capable of destabilizing an oxide film that forms at the interface between the seed and a molten metal during the casting process, and thereby promotes a continuous single-crystal grain growth and reduces grain misorientation defects that can initiate from the seed/metal interface.