Evaluation of the Mechanical Properties of Metals by means of an Instrumented Ultramicrotome
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- Taniyama Akira
- Corporate R & D Laboratories, Sumitomo Metal Industries, Ltd.
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- Asakura Kentaro
- Department of Materials Engineering, School of Engineering, The University of Tokyo
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- Niwa Hirotsugu
- Mitsubishi Chemical Group Science and Technology Research Center, Inc.
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- Hirohata Yasuhisa
- Central Institute for Electron Microscopic Researches Nippon Medical School
Bibliographic Information
- Other Title
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- 計装化ウルトラミクロトームによる金属材料の機械的特性評価
Abstract
Recently, the instrumented ultramicrotome, which can measure the cutting force required to shave off a thin film for TEM observation with ultramicrotomy, has been developed. In this study, the cutting force of various metals was measured with the instrumented ultramicrotome to reveal their mechanical properties which the measured cutting force reflects. A pure Pb, Al, Zn and Cu were used as specimens. The measured cutting force tended to have a little relationship with Vickers hardness of the specimens. Especially, the cutting force showed almost constant value without depending on the Vickers hardness in the pure Cu specimens whose hardness was varied with a cold rolling and an annealing. Therefore, the shear stress of the specimens, which is needed to deform the thin film, was estimated with assuming that the measured cutting force consists of two elements, the shear stress and the tear force which is needed to remove a thin film from a specimen block. The shear stress was unique to each specimen, and it had a good relationship with the shear modulus of specimen. The value of the shear stress was about 1/60 of the modulus in each specimen. This indicates that dislocations are not concerned with the shear deformation in the thin films of 100∼300 nm in thickness obtained with ultramicrotomy.
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 68 (5), 288-292, 2004
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390282681454499968
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- NII Article ID
- 130004455453
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- ISSN
- 18806880
- 24337501
- 00214876
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed