摘要
利用光学显微镜、透射电子显微镜、X射线衍射和HB-3000B型布氏硬度计对Fe-15Ni-12Mn-3.5C-2.5Si合金在不同冷轧变形量条件下的组织和性能进行了分析和研究。实验表明,随变形量的增大,晶内出现大量的位错缠结组织,晶粒细化为微晶和纳米晶。合金硬度随变形量的增加而增大。说明位错硬化机制和纳米晶、非晶态的产生是Fe-15Ni-12Mn-3.5C-2.5Si合金产生应变硬化的原因。
The microstructure and properties of Fe-15Ni-12Mn-3.5C-2.5Si alloy with different deformation were analyzed and studied through the optical microstructure, transmission electron microscopy （TEM）, X-ray diffraction （XRD） and HB-3000B Brinell hardness. The results show that, with the increase of deformation, lots of tangled dislocation cells appear in the crystal, and the crystal becomes nano-sized grain, then the hardness of the alloy improves. Therefore dislocation hardening mechanism, the formation of nano-sized grain and amorphous phase are significant factors of causing work hardening of Fe-15Ni-12Mn-3.5C-2.5Si alloy.
出处
《热加工工艺》
CSCD
北大核心
2009年第12期12-14,共3页
Hot Working Technology
基金
国家自然科学基金资助项目(50471007)
福建省自然科学基金资助项目(E0710006)
关键词
冷轧
位错
晶粒细化
加工硬化
cold rolling
dislocation
grain refining
work hardening
