NiAl合金研究中的几个重要发现-中国材料进展

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摘要:: 本文综述了作者等从1988年至今，在“七五”至“九五”国家“863”计划项目，国家自然科学基金4项面上，一项重点和一项重大项目（子课题）以及“九五”和“十五”重点项目支持下取得的最主要的科研成果，重点介绍了NiAl合金研究中的几个重要发现：（1）NiAl及NiAl合金超塑性的发现及其机理研究；（2）纳米晶NiAl合金的强韧化及其良好高温稳定性的发现；（3）内生颗粒NiAl基复合材料的强韧化及界面非晶层的发现；（4）NiAl合金自润滑耐磨行为的发现及其机理研究；（5）NiAl共晶中Hf的沉淀强化作用的发现及其JJ3合金的研制.

Abstract:: This review summarizes the main research results of the studies on NiAl alloys supported by state 863 projects from “7th Five-Year” to “9th Five-Year”, four general projects of the national natural science funds, one key program, one subproject of a major project, and key projects of national defense and military industry during “9th Five-Year” and “10th Five-year’ since 1988, emphatically introducing the five main findings: (1) the superplasticity and its mechanisms of the NiAl alloys, (2) mechanisms of strengthening and toughening of nanocrystalline NiAl and its excellent high temperature stability, (3) strengthening and toughening of in-situ particle-reinforced NiAl composites and amorphous layer at interface, (4) self-lubrication wear-resistant behavior of NiAl alloys and its mechanism, and (5) the effect of precipitate-strengthening of element Hf in NiAl eutectic alloy and develop of JJ3 alloy.