摘要
研究了原位 (in situ) Ti CP/Fe复合材料组织中有害相 Fe3C和 Fe2 Ti的形成过程及其防止措施。结果表明 :Fe3C和 Fe2 Ti均在 Fe- Ti- C熔体等温反应后的凝固过程中形成 ,且与奥氏体中固溶的 Ti量有关 ;对熔体进行微量Cu、Ni合金化及孕育处理可促进熔体中 Ti C颗粒的形成 ,并有效地防止组织中有害相的产生 ,从而使复合材料的性能得以进一步提高。
The forming process and preventive measures of detrimental Fe 3C and Fe 2Ti in the microstructures of in situ processed TiC P/Fe composites have been studied. The results show that the above two harmful phases form during the solidification of Fe Ti C melt, and are related to the Ti content of austenite. The measures of Cu, Ni microalloying and inoculating for the melt can not only promote the synthesis of TiC particles in the melt, but also prevent effectively the harmful phases from precipitating during solidification. As a result, the properties of the composite have been improved.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2000年第3期55-58,共4页
Acta Materiae Compositae Sinica
基金
材料复合新技术国家重点实验室开放基金
华中理工大学科技基金联合资助项目
