Microstructural evolution of in-situ (Fe,Cr)7C3 particles reinforced iron matrix composites
A kind of (Fe,Cr)7C3particles reinforced iron matrix composite was prepared by metallurgical bonding between Cr wires and gray cast iron at 1200℃ with subsequent heat treatment.The obtained composites were comparatively characterized by XRD,SEM and microhardness tests.The results showed that the composites mainly consisted of α-Fe matrix and the reinforcements of particle bundles,which include (Fe,Cr)7C3 carbides and γ-Fe.The cross-section of the reinforcements gradually increase with heat treatment time,and the microstructures change from eutectic to hypoeutectic,the morphologies of the reinforcements present chrysanthemum-shaped,granular and intercrystalline eutectics.
In-situ composites (Fe,Cr)7C3
Libin Niu Jinglai Tian Xiaogang Wang
College of Materials Science and Engnieering,Xian University of Science and Technology,Xian 710055 Xian University of Architecture & Technology,Xian 710055,P.R.China
国际会议
西安
英文
408-411
2012-06-12（万方平台首次上网日期，不代表论文的发表时间）