발간논문

Home > KJMM 논문 > 발간논문

Vol.36, No.10, 1570 ~ 1577, 1998
Title
Microstructural Evolution of Ti / Al Layered Composite by Self - Propagating High - Temperature Synthesis
박우진 , 이원철 , 정재영 , 안상호 , 김낙준 Woo Jin Park , W . C . Lee , Jae Young Jung , Sang Ho Ahn , Nack J . Kim
Abstract
Microstructural evolution of Ti/Al layered structures annealed at various temperature has been investigated by using optical microscopy, scanning electron microscopy, and X-ray diffractometry. Ti/Al layered sheets have been produced by dipping two Ti sheets in Al melt. The Ti/Al interfaces showed good bonding characteristics in as-dipped sheet. Microstructure of the heat-treated Ti/Al sheet varies depending on the subsequent annealing temperature. In the Ti/Al layered composite annealed at temperature below Al melting point, thin TiAl₃ layer was formed by the diffusion process at the Ti/Al interfaces. In the case of composite exposed at temperature above Al melting point, the equiaxed TiAl₃particles protruded into Al matrix from the thin TiAl₃ layer as well as the formation of thin TiAl₃ layer. TiAl₃ particles become homogeneously distributed within the Al matrix away from the Ti/Al interface with increasing annealing time. The formation of TiAl₃ phase in Ti/Al sheet annealed at temperature above Al melting point is believed to be formed by the exothermic chemical reaction.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.