U.S.-China Cooperative Research (Materials Science): Casting Defect Formation Including Hot Tearing

中美合作研究（材料科学）：包括热撕裂在内的铸造缺陷形成

• 批准号: 8902862
• 负责人: Robert Pehlke
• 金额: $ 2.56万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-01 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8902862&HistoricalAwards=false
• 关键词: U.S.; China; Cooperative; Research; Materials

This is a two.year collaborative research project between Robert D. Pehlke of the Department of Materials Science and Engineering, University of Michigan, and Li Qingchun of the Casting Division of the Department of Metallic Materials and Technology of the Harbin Institute of Technology, Harbin, China. The project is sponsored jointly by NSF and the Harbin Institute of Technology. The research program will focus on defect formation in castings with an emphasis on hot tearing. Several front.line research issues will be addressed, including (1) measurements of compressive >strength/resistance of green and dry sands; (2) quantitative estimates or measurements of frictional behavior at the sand/metal interface; (3) >determination/estima>tion of more accurate fracture or tearing criteria; and (4) mechanical property measurements of casting alloys at and above 80 percent of the absolute melting temperature. The assessment of fracture criteria would be undertaken at the University of Michigan, and the high temperature mechanical property measurements for selected alloys would be studied at the Harbin Institute of Technology. The other issues of high temperature sand properties and the frictional behavior at the sand/metal interface would be jointly undertaken by groups at both institutions. The goal of this project is to contribute to a major research activity conducted at the University of Michigan with NSF support since 1979 in the field of computer.aided design for castings. The research will also contribute to ongoing research at the Harbin Institute of Technology.

这是一个为期两年的合作研究项目 罗伯特D。外交部的佩尔克 材料科学与工程学院 密歇根州，和李庆春的铸造司 金属材料系， 哈尔滨工业大学的技术， 中国哈尔滨。 该项目由以下机构联合赞助： NSF和哈尔滨工业大学。 该研究计划将集中在缺陷的形成 在铸件中强调热撕裂。 几个前沿研究问题将得到解决， （1）测量压缩 >绿色砂和干砂的强度/阻力;（2） 摩擦力的定量估计或测量 砂/金属界面行为;（3） >确定/估计更准确的断裂 或撕裂标准;和（4）机械性能 80 ℃及以上铸造合金的测量 绝对熔化温度的百分比。 的 将对断裂标准进行评估 在密歇根大学， 温度机械性能测量 选择的合金将在哈尔滨进行研究 理工学院 高的其他问题 砂的温度特性和摩擦特性 沙子/金属界面的行为将是 由两个机构的小组共同进行。 该项目的目标是为一个 在大学进行的主要研究活动 自1979年以来， 计算机辅助铸件设计领域。 的 研究也将有助于正在进行的研究 在哈尔滨工业大学。