Third International Workshop on Ordered Intermetallic Alloys and Composites; Hangzhou, China; April 5-10, 1998

第三届有序金属间合金和复合材料国际研讨会；

• 批准号: 9714853
• 负责人: Stephen Sass
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-02-01 至 1999-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9714853&HistoricalAwards=false
• 关键词: Third; International; Workshop; Ordered; Intermetallic

9714853 Sass The objective of this international workshop is a provide a forum for material scientists, and engineers from various countries to participate in an in-depth discussion of recent advances and critical issues for the structural use of ordered intermetallic alloys and composites. The structural uses of intermetallic alloys suffer a major drawback: most are brittle at ambient temperatures. This poor ductility and toughness restricts the use of intermetallics as critical components in industrial systems. For the past 10 years, substantial efforts have been devoted to this class of structural materials, and, as a result, significant progress has been made in improving the tensile ductility and fracture resistance of nickel, iron, and titanium aluminides. The objective of this workshop is a provide a forum for experts from various countries to discuss (1) fundamental variables controlling deformation and fracture of ordered intermetallics at ambient and elevated temperatures; (2) the design of ductile intermetallic alloys for structural uses; (3) further improvements in low- temperature toughness and high-temperature strength by a composite approach; and (4) the processing of intermetallic alloys and composites by both conventional and innovative methods. This international workshop is co-organized by Prof. Dongliang Lin (host) from Shanghai Jiao Tong University, Dr. C. T. Liu from Oak Ridge National Laboratory, and Prof. Stephen L. Sass from Cornell University. It is held in Hangzhou, China, from April 5-10, 1998. Participation in this workshop is by invitation only. The proceedings of this workshop is tentatively planned to be published in the Journal of Materials Science and Technology. It is expected to have 25-30 scientists from outside China and 25-30 scientists from China. %%% Ordered intermetallics based on aluminides and silicides possess many attractive properties for high-temperature structural use. In general, these intermetallic s show excellent strength at elevated temperatures. Many intermetallic alloys exhibit an increase in strength with temperature rather than a decrease as in conventional materials. Aluminides and silicides are extremely resistant to oxidation and corrosion at elevated temperatures in hostile environments. In addition, these intermetallic alloys have a density lower than that of steels and superalloys by as much as 40%, thus making the intermetallics ideal for fabricating moving parts in advanced heat engines, gas turbines and other energy conversion systems. ***

小行星9714853 本次国际研讨会的目的是为来自不同国家的材料科学家和工程师提供一个论坛，以深入讨论有序金属间合金和复合材料结构应用的最新进展和关键问题。 金属间合金的结构用途有一个主要缺点：大多数在环境温度下是脆性的。 这种差的延展性和韧性限制了金属间化合物作为工业系统中的关键部件的使用。 在过去的10年中，人们对这类结构材料进行了大量的研究，结果在提高镍、铁和钛铝化物的拉伸延展性和抗断裂性方面取得了重大进展。 这次研讨会的目的是为来自各国的专家提供一个论坛，讨论（1）控制有序金属间化合物在室温和高温下变形和断裂的基本变量;（2）用于结构用途的韧性金属间化合物合金的设计;（3）通过复合材料方法进一步提高低温韧性和高温强度;（4）利用复合材料进一步提高金属间化合物的韧性和高温强度。以及（4）通过传统方法和创新方法加工金属间合金和复合材料。 本次国际研讨会由上海交通大学林栋梁教授（主持人）、中国科学院上海研究所所长陈志华博士（副所长）、中国科学院上海研究所副所长陈志华博士（副所长）、中国科学院上海研究所副所长陈志华博士（副所长）共同主办。T.来自橡树岭国家实验室的Liu教授和Stephen L.康奈尔大学的萨斯 本届大会将于1998年4月5日至10日在中国杭州举行。 参加本研讨会仅凭邀请。 这次研讨会的会议记录初步计划发表在《材料科学与技术杂志》上。 预计将有25-30名来自中国以外的科学家和25-30名来自中国的科学家。 基于铝化物和硅化物的有序金属间化合物在高温结构应用中具有许多吸引人的性能。 通常，这些金属间化合物在高温下显示出优异的强度。许多金属间化合物合金的强度随温度而增加，而不是像传统材料那样降低。 铝化物和硅化物在恶劣环境中的高温下具有极强的抗氧化和抗腐蚀性。 此外，这些金属间化合物合金的密度比钢和超级合金的密度低40%，因此使金属间化合物成为制造先进热力发动机、燃气轮机和其他能量转换系统中的运动部件的理想材料。 ***