Development of texture and elastic anisotropy during deformation of hcp metals
Development of texture and elastic anisotropy during deformation of hcp metals
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hcp 金属变形过程中织构和弹性各向异性的发展
DOI：
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发表时间：
1988
期刊：
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通讯作者：
G. Johnson
中科院分区：
文献类型：
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作者：
H. Wenk;T. Takeshita;R. Jeanloz;G. Johnson
地球内核很可能由ϵ(Hcp)铁组成，并表现出地震速度的各向异性，这可以用对流过程中晶体择优取向的发展来解释。本文总结了ϵ金属的变形机制，并将多晶变形的泰勒理论应用于不同应变历史下的Hcp-Fe类似物。然后使用择优取向模式来计算变形多晶的弹性性质，特别强调各向异性。
The inner core of the earth most likely consists of ϵ (hcp) iron and shows anisotropy of seismic velocities which could be explained by crystallographic preferred orientation developing during convective flow. This paper summarizes deformation mechanisms in hcp metals and applies the Taylor theory of polycrystal deformation to analogs of ϵ-iron for different strain histories. The pattern of preferred orientation is then used to calculate elastic properties of deformed polycrystals with special emphasis on anisotropy.