Effect of Carbon Addition on the Strength and Ductility of Doped Molybdenum.
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- Hoshika Tetsuji
- Graduate School of Science, Okayama University of Science
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- Hiraoka Yutaka
- Graduate School of Science, Okayama University of Science
Bibliographic Information
- Other Title
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- ドープモリブデンの強度および延性に及ぼす炭素添加の効果
- ドープ モリブデン ノ キョウド オヨビ エンセイ ニ オヨボス タンソ テンカ ノ コウカ
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Description
Carbon addition was performed for doped molybdenum having two kinds of grain structures, large and elongated grain structure and relatively small and elongated grain structure. The three-point bend tests were performed for these samples. In this study low-temperature fracture strength and ductility was represented by two parameters; critical stress and critical temperature respectively. Then their fracture surfaces were examined by using a scanning electron microscopy, and crack generation and propagation characteristics were investigated.<BR>The fracture strength of doped molybdenum was generally improved by a small addition of carbon, but the mechanism of improvement was different depending on the grain structure. In case of large and elongated grain structure, the increase of strength was attributed to the strengthening of the small grain (s), which was identified as the crack generation site. On the other hand, in case of relatively small and elongated grain structure the increase of strength was attributed to the strengthening of the whole grain boundaries. The ductility of doped molybdenum was also improved by a small addition of carbon. This result was mainly attributed to the increase of the fracture strength.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 46 (5), 472-477, 1999
Japan Society of Powder and Powder Metallurgy
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Details 詳細情報について
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- CRID
- 1390282681285530112
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- NII Article ID
- 10002262386
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 4737207
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed