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      自動車 및 航空機 材料用 急速凝固 2024A1/10SiC/xGr 複合材料의 微細組織과 磨耗特性에 관한 硏究 = A Study on the Microstructures and Wear Characteristics of Rapidly Solidified 2024A1/10SiC/xGr Composites for Automobile and Aircraft Parts

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      https://www.riss.kr/link?id=T8943872

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      This study aimed at effects of mechanical properties and microstructure of 2024Al/10SiC/xGr (x=1,3,5vol/%) composites on wear characteristics.
      Tensile test, hardness test and wear test were conducted for the evaluation of mechanical properties such as hardness and tensile test.
      Wear characterisstics were measured by wear loss, friction coefficients, and friction temperature rise.
      The experimental results indicate that the maximum hardness was found at aging condition of 190℃ and 14 h.
      The tensile strength decreased, but the wear resistance increased by adding graphite contents.
      The wear surfaces of the specimens and the counter steel were observed and analyzed by OM, SEM, EDS, and mechanical properties.
      The worn volume has been measured as a function of the alloy composition, slidilng distance, normal load and sliding velocity.
      Optical and scanning electron microscopic examinations of the test specimen, were track and wear debris have been carried out for the elucidation of the wear mechanism.
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      This study aimed at effects of mechanical properties and microstructure of 2024Al/10SiC/xGr (x=1,3,5vol/%) composites on wear characteristics. Tensile test, hardness test and wear test were conducted for the evaluation of mechanical properties such a...

      This study aimed at effects of mechanical properties and microstructure of 2024Al/10SiC/xGr (x=1,3,5vol/%) composites on wear characteristics.
      Tensile test, hardness test and wear test were conducted for the evaluation of mechanical properties such as hardness and tensile test.
      Wear characterisstics were measured by wear loss, friction coefficients, and friction temperature rise.
      The experimental results indicate that the maximum hardness was found at aging condition of 190℃ and 14 h.
      The tensile strength decreased, but the wear resistance increased by adding graphite contents.
      The wear surfaces of the specimens and the counter steel were observed and analyzed by OM, SEM, EDS, and mechanical properties.
      The worn volume has been measured as a function of the alloy composition, slidilng distance, normal load and sliding velocity.
      Optical and scanning electron microscopic examinations of the test specimen, were track and wear debris have been carried out for the elucidation of the wear mechanism.

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      목차 (Table of Contents)

      • 목차
      • List of Figures
      • List of Table
      • 1. 서론 = 1
      • 2. 이론적 배경 = 4
      • 목차
      • List of Figures
      • List of Table
      • 1. 서론 = 1
      • 2. 이론적 배경 = 4
      • 2-1. 급속응고의 특성 = 4
      • 2-2. 금속복합재료의 제조공정 = 8
      • 2-2-1. 고상 제조법 = 8
      • 2-2-2. 액상 제조법 = 10
      • 2-3. 마찰 및 마모에 관한 이론 = 11
      • 2-3-1. 외관상 접촉 면적 및 진실 접촉 면적 = 11
      • 2-3-2. 마찰에 관한 이론 = 11
      • 2-3-3. 마모에 관한 이론 = 13
      • 2-4. 금속복합�F료의 마모특성 = 15
      • 2-5. 고체윤활제의 주요 성분 = 16
      • 2-5-1. 흑연(Graphite) = 16
      • 2-5-2. 사불화 에틸린(PTFE) = 18
      • 2-5-3. 왁스 = 19
      • 3. 실험 방법 = 20
      • 3-1. 합금분말의 제조 = 20
      • 3-2. 합금분말의 입도 분포 = 20
      • 3-3. Al분말과 SiC보강입자 및 고체윤활제의 혼합 = 20
      • 3-4. 합금분말의 압축성형 및 탈가스처리 = 23
      • 3-5. 열간압출 및 압출재의 열처리 = 23
      • 3-6. 압출재의 기계적 성질 = 24
      • 4. 실험결과 및 고찰 = 28
      • 4-1. 합금분말의 입도분포 = 28
      • 4-2. 미세조직 관찰 = 28
      • 4-3. 복합재료의 기계적 성질 = 34
      • 4-3-1. 경도시험 결과 및 고찰 = 34
      • 4-3-2. 인장시험 결과 및 고찰 = 34
      • 4-2-2. 마모시험 결과 및 고찰 = 38
      • 5. 결론 = 47
      • Refernces = 48
      • Abstract = 52
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