| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2008-10-29 |
| タイトル |
|
|
タイトル |
70-30黄銅の温度673Kにおける破断伸びと変形組織の関係 |
|
言語 |
ja |
| タイトル |
|
|
タイトル |
Relation between fractured elongation and deformation srtuctures on the Cu-30mass% Zn alloy at 673K |
|
言語 |
en |
| 言語 |
|
|
言語 |
jpn |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
α-brass |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
high temperature deformation |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
grain size |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
strain rate |
| 主題 |
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|
主題Scheme |
Other |
|
主題 |
cavity |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
intermediate temperature em brittlement |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
high ductility |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
dynamic recrystallization |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 作成者 |
武藤, 侃
川岸, 秀一朗
田上, 道弘
|
| 内容記述 |
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|
内容記述タイプ |
Abstract |
|
内容記述 |
For a further understanding of high temperature tensile-deformation behavior of a Cu-30 mass% Zn binary alloy depending on the strain rate, the structure and the stress-strain curves were investigated in detail, at 673K, using a salt bath (NaNO,: KN03 = 1: 1) under a strain rate range from 3.3x 10- 5 to 2.0x 1O- 1s- 1 • Specimens with three grain sizes ranging from 0.012 to 0.045 mm diameter were used. When dynamic recrystallization occurred at 673 K, the stress decreased. After the initial grain shape changed to dynamic recrystallization, the stress-strain curves showed a steady state, and did not depend on the occurrence or the growth of voids. The peak strain, which is the strain at maximum stress, was hardly dependent on the size of the initial grain, but dependent on the strain rate. Thus, the peak strain increases with strain rate. At this time, the dynamic recrystallization form is a bulging mechanism and simultaneously, a nucleation mechanism. This occurrence happened at about 20-30% peak strain. Initial void formation depended on the strain rate. And the strain appearing void increased with increased in strain rate. Cavities of fractured specimens showed 4 different shapes in three dimensions which corresponded to initial grain size and strain rate. Fractured elongation reveals a tendency to become smaller, when cavities start to combine and grow into a45degree angle in relate to the tensile direction. On the other hand, the specimens exhibit large elongation, when cavi ties combine and grow in the tensile direction. |
|
言語 |
en |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 書誌情報 |
素材物性学雑誌
巻 12,
号 1/2,
p. 72-87,
発行日 1999-12-01
|
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
09199853 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN10140273 |
| 出版者 |
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出版者 |
日本素材物性学会 |
sozai12-8.pdf (2.2 MB)
