Fabrication of Vapor-Grown Carbon Fiber-Reinforced Magnesium-Calcium Alloy Composites by Compo-Casting Process

• Yao Youqiang

  Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

• Xu Zhefeng

  Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

• Sugio Kenjiro

  Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

• Choi Yongbum

  Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

• Matsugi Kazuhiro

  Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

• Kang Shaoming

  Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

• Fu Ruidong

  State Key Laboratory of Metastable Materials Science and Technology, Yanshan University

• Sasaki Gen

  Department of Mechanical Materials Engineering, Graduate School of Engineering, Hiroshima University

抄録

Magnesium-calcium alloy composites reinforced with nickel-coated vapor-grown carbon fibers (VGCFs) were fabricated using a compo-casting process. Then, the microstructures and mechanical properties of these composites were investigated. The Mg-5Al-3Ca (AX53) alloy exhibited a dendritic microstructure with a coarse lamellar (Mg, Al)₂Ca phase along the grain boundaries instead of the irregular β-Mg₁₇Al₁₂ phase found in the Mg-5Al alloy. For the 0.5% Ni-coated VGCF-reinforced AX53 alloy composite, the VGCFs were well dispersed in the matrix, with the nickel coating diffused into the metal. Al₃Ni compounds formed both inside the grains and on the grain boundaries. The ultimate tensile strength (UTS) and strain-hardening of the AX53 alloy, in comparison with the Mg-5Al alloy, were improved significantly to the point of fracture. Furthermore, an increase in the UTS of the composite was achieved with the addition of 0.5% VGCFs, along with an increase in the total elongation, which could mainly be attributed to the strain hardening during a larger strain. The 0.2% yield stress was slightly improved as a result of the small amount of introduced Ni-coated VGCFs. However, the elongation dropped for the 1.0% VGCF-reinforced AX53 alloy composites, which led to a low strength similar with that of the AX53 alloy.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 58 (4), 673-678, 2017

  公益社団法人 日本金属学会

キーワード

• mechanical properties
• vapor-grown carbon fiber (VGCF)
• magnesium matrix composites
• nickel coating

詳細情報

• CRID: 1390001204254716928
• NII論文ID: 40021149108
• NII論文ID: 130006777306
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mbw201607
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 028080229
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028080229
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/58/4/58_MBW201607/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
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  • KAKEN
• 抄録ライセンスフラグ: 使用不可