DIFFUSION REACTION IN THE INTERFACE OF TITANIUM/MILD STEEL COMPOSITE

来源期刊：中南大学学报(英文版)1996年第2期

论文作者：Yang Yang Zhang Xinming

文章页码：32 - 36

Key words：interface; diffusion reaction; intermetallic compound

Abstract: The microstructure together with the formation and growth of reaction phases in the interfacial diffusion zone of the explosive cladding TA2/A3 has been investigated by means of OM, SEM, AES and XRD techniques. When the specimen annealed at temperature under theβ-Ti→ α-Ti transformation, i. e. below 1173 K, only TiC forms along TA2 side of interface and hinders the interdiffusion of Fe and Ti atoms, thus Fe₂Ti or FeTi is unable to occur. While heated up to the transformation temperature ofβ-Ti, e. g, over 1223 K, the parabolic growth of intermetallic compounds of Fe₂Ti and FeTi with layer structure may form intergranularly and the formation ofβ-Ti orβ-Ti+α-Ti structure at the Fe enriched side of TA2 and the martensitic transformation products at the Fe-depleted side are observed owing to the diffusion of Fe. Furthermore, the growth ofβ-Ti transformation layer is revealed to follow the parabolic rule