Plastic deformation of high purity magnesium at room temperature
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- JOTOKU Masahiro
- Graduate Student, Graduate School of Engineering, University of Hyogo
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- YAMAMOTO Atsushi
- Graduate School of Engineering, University of Hyogo
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- TSUBAKINO Harushige
- Graduate School of Engineering, University of Hyogo
Bibliographic Information
- Other Title
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- 高純度マグネシウムの室温塑性変形
- コウジュンド マグネシウム ノ シツオン ソセイ ヘンケイ
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Abstract
It is generally believed that formability of magnesium at room temperature is poor, owing to its crystal structure, hcp. However, in the case of high purity magnesium, cold-rolling at room temperature is easily carried out with higher rolling reductions. In the present study, high purity magnesium specimens with about 1 mm in thickness were prepared by a vapor deposition technique, which intrinsically possesses a purification process during evaporation and deposition. Cold-rolling with about 80% reduction can be applied to the specimen by a multi pass rolling without any cracking, except a small ear cracks. Moreover, it has been found out that recrystallization was induced by cold-rolling when the reduction rate was larger than about 30%. The (0001) texture was formed by cold-rolling, which did not deteriorate the formability. Non-basal dislocations were frequently observed in the cold-rolled specimens. Critical resolved shear stress for the non basal slip system is considerably lower in the high purity magnesium compared with those in the conventional magnesium and its alloys, which results in cross slip and annihilation of dislocations and causes the recrystallization.
Journal
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- Journal of Japan Institute of Light Metals
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Journal of Japan Institute of Light Metals 56 (12), 711-715, 2006
The Japan Institute of Light Metals
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Details 詳細情報について
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- CRID
- 1390282681315331200
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- NII Article ID
- 10018660903
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- NII Book ID
- AN00069773
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- ISSN
- 18808018
- 04515994
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- NDL BIB ID
- 8623499
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed