http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이재철(Jae Chul Lee),서진유(Jin Yoo Suh),안재평(Jae Pyung Ahn) 대한금속재료학회 ( 구 대한금속학회 ) 2002 대한금속·재료학회지 Vol.40 No.9
Commercially pure Al alloy sheets were processed using high strain rate dissimilar channel angular pressing(DCAP) as many as 100 passages through the channel with φ= 120˚ in order to investigate the work hardening and the work softening behaviors caused by extremely high strain level (~58). The hardness of the alloy increased significantly by a factor of 2 at strains less than ~2.0, while a gradual decrease in the hardness was observed at strains greater than ~2.0. The work hardening and the work softening behaviors observed from the Al alloy were analyzed by correlating the measured properties with microstructural evolutions observed by transmission electron microscopy(TEM). A detailed microstructural evolution sequence occurring at successive strain stages was also demonstrated.
무전해 도금을 이용한 AlN/Cu 복합재료 제조와 AlN 입자크기에 따른 복합재의 열특성 평가
조성철 ( Sung Chul Cho ),고세현 ( Se Hyun Ko ),김혜성 ( Hye Sung Kim ),안재평 ( Jae Pyung Ahn ),한준현 ( Jun Hyun Han ) 대한금속재료학회(구 대한금속학회) 2015 대한금속·재료학회지 Vol.53 No.12
AlN/Cu composite powders with a core-shell structure were synthesized by a new technique using electroless plating of Cu on AlN particles and consolidated by spark plasma sintering (SPS). Dependence of the thermal conductivity and coefficient of thermal expansion (CTE) of the AlN/Cu composites on the particle size of AlN were studied. The thermal conductivity and coefficient of thermal expansion were significantly dependent on the existence of both boundary pores surrounding the Cu-coated AlN particles and the internal pores of the AlN particles. In order to eliminate the pores, the temperature and pressure of SPS were increased and the AlN particles were heat-treated at high temperature. Adoption of the core-shell AlN/Cu composite powders facilitated the fabrication of AlN/Cu composites with low porosity and uniform distribution in the AlN in Cu matrix.