Application of Harmonic Structure Design to Biomedical Co–Cr–Mo Alloy for Improved Mechanical Properties
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- Sawangrat Choncharoen
- Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University
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- Yamaguchi Osamu
- Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University
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- Vajpai Sanjay Kumar
- Research Organization of Science and Technology, Ritsumeikan University
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- Ameyama Kei
- Department of Mechanical Engineering, Faculty of Science and Engineering, Ritsumeikan University
書誌事項
- タイトル別名
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- Application of Harmonic Structure Design to Biomedical Co–Cr–Mo Alloy for Improved Mechanical Properties
- Application of harmonic structure design to biomedical CoCrMo alloy for improved mechanical properties
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説明
Harmonic structure is a recently introduced concept for material microstructure design. It is essentially a bimodal microstructure in which deliberately introduced structural heterogeneity has a specific order: interconnected network of ultra-fine grained (UFG) regions, called “shell area”, and coarse-grained regions called “core area”. Such microstructural features dictate a unique set of properties to the Harmonic-structured materials. The present paper deals with the application of harmonic structure design to biomedical Co–Cr–Mo alloys for improved mechanical properties. In the present work, it has been demonstrated that full density Co–Cr–Mo alloy compacts with harmonic structure can be successfully prepared by controlled mechanical milling followed by spark plasma sintering of the pre-alloyed powders at 1323 K for 3.6 ks. Sintered compacts exhibited an excellent combination of strength and ductility. Moreover, it has been also shown that the mechanical properties depend strongly on the volume fraction of the inter-connected three-dimensional network of fine-grained regions, i.e., shell volume fraction. In addition, the plastic deformation of harmonic structure Co–Cr–Mo alloy also led to α-FCC to ε-HCP allotropic transformation. Therefore, the application of harmonic structure design leads to the new generation microstructure of biomedical Co–Cr–Mo alloys, which demonstrates outstanding mechanical properties compared to conventional materials.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 55 (1), 99-105, 2014
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679228054912
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- NII論文ID
- 130004825131
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BC2cXjs1ymtro%3D
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 025173335
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- 本文言語コード
- en
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- 資料種別
- journal article
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