상세검색
최근 검색어 전체 삭제
다국어입력
즐겨찾기0
155598.jpg
KCI등재후보 학술저널

알루미나 기재 복합재료의 고강도 고인성화 기구

Strengthening and Toughening Mechanisms of Alumina-based Nanocomposites

Intra-type alumina-based nanocomposites, in which second-phase nanoparticles are embedded within alumina grains, use dislocation activities to enhance strength and fracture toughness. The dislocations are generated around the nanoparticles by residual stresses during cooling process. In this paper, first, we explain strengthening and toughening mechanisms of alumina-based nanocomposites based on dislocation activities. Second, we propose a soaking method to construct the intra-type nanostructure and fabricate alumina/nickel and alumina/silver nanocomposites. The nanocomposites are then annealed in order to enhance the fracture toughness of the materials. Finally, we discuss the relation between the strength, fracture toughness, and critical frontal process zone size of the materials.

1. 서론

2. 입내나노 복합재료의 메카니즘

3. 실험

4. 강도·파괴인성·임계FPZ크기

5. 결과

참고문헌

로딩중