Structure-Property-Composition Relationships in TrialuminideAlloys

三铝化物合金的结构-性能-成分关系

• 批准号: 9015665
• 负责人: Donald Mikkola
• 金额: $ 29.7万
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-02-01 至 1994-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015665&HistoricalAwards=false
• 关键词: Structure; Property; Composition; Relationships; TrialuminideAlloys

This research is developing an understanding of the mechanical properties of cubic forms of trialuminides. Phase stability and ductility of cubic forms of aluminum-titanium-chromium and aluminum-titanium-manganese ternary alloys are the focus of the study. Part of the phase stability work involves the effect of fourth element additions on the extent of the cubic phase (L12) region. This includes the determination of specific element site occupation, atomic size and electronic structure. Micromechanisms associated with the dislocations accounting for plastic flow in the alloys are being studied. It is expected that the research will contribute to the knowledge base needed for the development of new families of low density, heat-resistant alloys that have high specific strengths and excellent oxidation resistance.

这项研究发展了对三铝化物立方形态力学性能的理解。铝-钛-铬和铝-钛-锰三元合金的立方相稳定性和延展性是研究的重点。相稳定性工作的一部分涉及到第四元的加入对立方相（L12）区域范围的影响。这包括确定特定元素的位置、原子大小和电子结构。研究了与位错有关的合金塑性流动的微观机制。该研究将为开发具有高比强度和优异抗氧化性能的低密度、耐热合金新家族提供所需的知识基础。