4.7 Article

Improving flexural strength of Ti2C-Ti cermet by hot compressive deformation: Microstructure evolution and fracture behaviors

期刊

出版社

SCIENCE PRESS
DOI: 10.1007/s11431-022-2339-4

关键词

cermet; sub-stoichiometric titanium carbide; hot deformation; precipitate; fracture behavior

向作者/读者索取更多资源

Hot compressive deformation was conducted on a Ti2C-Ti cermet, resulting in the transformation of lamellar Ti precipitates into bimodal size distribution, leading to an increase in strength. This research provides guidance for further deformation and mechanical property improvement of Ti2C cermets.
In order to improve the microstructure and mechanical properties, the hot compressive deformation with 50% height reduction at 1100 degrees C was conducted on a Ti2C-Ti cermet. The results showed that the lamellar Ti precipitates in Ti2C grains were transformed to bimodal size distribution, which was approximately 290 nm and 5.8 mu m in diameter, respectively, after the hot deformation. The bimodal Ti precipitates suppressed {011} cleavage surfaces of Ti2C during flexural fracture, which resulted in an 18.5% increment of strength. This phenomenon can be attributed to the bimodal Ti precipitates that decreased the average crack driving force due to their gentle variation in elastic modulus compared with the monolithic lamellar Ti precipitates. The present work can guide further deformation and mechanical property improvement of Ti2C cermets.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据