| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2008-10-27 |
| タイトル |
|
|
タイトル |
Cu-30mass%Zn合金の高温延性に及ぼす結晶粒径とひずみ速度の影響 |
|
言語 |
ja |
| タイトル |
|
|
タイトル |
Effects of grain size and strain rate on high-temperature ductility of Cu-30mass%Zn alloy |
|
言語 |
en |
| 言語 |
|
|
言語 |
jpn |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Cu-30mass%Zn |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
grain size |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
high temperature |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
stress exponent |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
activation energy |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
mechanical property |
| 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
後藤, 正治
加藤, 千秋
田上, 道弘
|
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Cu-30mass%Zn alloys with various grain sizes were tensile tested under vanous strain rates from 3.3xlO-5 S·l to 3.3x10-3 S-l and at temperatures from 523K to 773K. Elongation to fracture for fine-grained specimens shows high ductility and a maximum value in a range of intermediate temperature. The peak ductility increases with increasing in strain rate though it does not depend on the initial grain size. Type of the flow curves is controlled by the factors of temperature, strain rate and initial grain size. The flow curve of coase-grained specimens shows a serrated flow at lower temperatures and at higher strain rates while shows the work softening processes at other conditions. The flow curve of fine-grained specimens shows a typical flow behavior of dynamic recrystallization. It should be noted that these flow curves tend to change from a type having simple peak due to dynamic recrystallization to another type having multiple peaks with decreasing initial grain size and strain rate and/or with increasing temperature. The values of stress exponent and apparent activation energy for deformation range from 3 to 5 and from 120 to 135kJ/mol, respectively. The main reason for this can be explained by a fact that the both mechanisms of dislocation glide and grain boundary sliding occur simultaneously. |
|
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 14,
号 1/2,
p. 35-42,
発行日 2001-12-01
|
| 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 |
|
|
出版者 |
日本素材物性学会 |
sozai14-6.pdf (851.5 kB)
