发现亚微米级Al2O3p/6061复合材料的微屈服抗力较高、组织稳定性好,其微屈服抗力与微望变符合Brown和Lukens提出的线性规律:通过与SiCp/6061和AlNp/6061的微屈服行为与组织的对比分析,认为增强体颗粒形状、尺寸以及基体中位错密度、亚晶粒尺寸等因素直接影响微屈服抗力.亚微米级颗粒增强复合材料对尺寸稳定性要求来说,微观组织形态较合理,是较理想的精密仪表材料.
In the present paper, microyield characteristic of a Al2O3p /6061 composite was investigated and its microstructure was observed by TEM and HREM. It indicated that the Al2O3p/6061 composite had high microyield stress and good microstructure stability comp
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