摘要
超细晶材料的力学性能明显提高,备受研究者的关注。但是,用传统的剧烈塑性变形工艺制备的超细晶通常处于高度的亚稳态,在拉伸及疲劳变形过程中极易发生局部变形,严重影响其力学性能。本文简述了一种搅拌摩擦加工制备超细晶材料的新型工艺,并将所制备的超细晶材料的微观组织和力学性能特点与传统超细晶材料对比,进行了总结和评述。
Ultrafine-grained（UFG） materials have caught much attention due to their significantly enhanced mechanical properties. However, local deformation easily occurred during tensile and fatigue processes of the traditional UFG materials produced by severe plastic deformation methods due to their metastable microstructure, resulting in the greatly reduced mechanical properties. This paper introduced a new method of preparing the UFG materials-friction stir processing（FSP）, and the microstructure and mechanical properties of FSP UFG materials were summarized and discussed compared with other UFG materials.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2018年第1期1-11,共11页
Chinese Journal of Materials Research
基金
国家自然科学基金(51301178和51331008)
关键词
金属材料
搅拌摩擦加工
超细晶材料
微观组织
力学性能
metallic materials, friction stir processing, ultrafine-grained material, microstructure, mechanical property
