Serration flow behavior with abnormal strain rate sensitivity of fine-grained Mg-0.8 Wt Pct Ca alloy

Qiuming Peng; Hui Fu; Wenlong Xiao

doi:10.1007/s11661-013-1941-2

Serration flow behavior with abnormal strain rate sensitivity of fine-grained Mg-0.8 Wt Pct Ca alloy

Qiuming Peng
, Hui Fu
, Wenlong Xiao

材料科学与工程学院

Yanshan University

科研成果: 期刊稿件 › 文章 › 同行评审

4 引用（Scopus）

摘要

Serration flow is first observed in a fine-grained Mg-0.8 wt pct Ca alloy throughout the deformation history. Strain rate sensitivity (SRS) is sensitive with the deformation temperatures. A positive SRS in combination with a type of downward serration is found at low temperatures, which is mostly attributed to the strong dislocation-dislocation interaction. However, at high temperatures, another upward serration is observed and the SRS is changed to negative as a result of the solute pinning dislocation.

源语言	英语
页（从-至）	4469-4474
页数	6
期刊	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
卷	44
期	10
DOI	https://doi.org/10.1007/s11661-013-1941-2
出版状态	已出版 - 10月 2013

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abstract = "Serration flow is first observed in a fine-grained Mg-0.8 wt pct Ca alloy throughout the deformation history. Strain rate sensitivity (SRS) is sensitive with the deformation temperatures. A positive SRS in combination with a type of downward serration is found at low temperatures, which is mostly attributed to the strong dislocation-dislocation interaction. However, at high temperatures, another upward serration is observed and the SRS is changed to negative as a result of the solute pinning dislocation.",

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AU - Fu, Hui

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N2 - Serration flow is first observed in a fine-grained Mg-0.8 wt pct Ca alloy throughout the deformation history. Strain rate sensitivity (SRS) is sensitive with the deformation temperatures. A positive SRS in combination with a type of downward serration is found at low temperatures, which is mostly attributed to the strong dislocation-dislocation interaction. However, at high temperatures, another upward serration is observed and the SRS is changed to negative as a result of the solute pinning dislocation.

AB - Serration flow is first observed in a fine-grained Mg-0.8 wt pct Ca alloy throughout the deformation history. Strain rate sensitivity (SRS) is sensitive with the deformation temperatures. A positive SRS in combination with a type of downward serration is found at low temperatures, which is mostly attributed to the strong dislocation-dislocation interaction. However, at high temperatures, another upward serration is observed and the SRS is changed to negative as a result of the solute pinning dislocation.

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Serration flow behavior with abnormal strain rate sensitivity of fine-grained Mg-0.8 Wt Pct Ca alloy

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