| 大晶粒多晶铝试样细观变形测量 |
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| 引用本文： | 刘宝琛,曹秋良.大晶粒多晶铝试样细观变形测量[J].清华大学学报(自然科学版),1994(5). |
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| 作者姓名： | 刘宝琛 曹秋良 |
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| 作者单位： | 清华大学工程力学系 |
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| 摘 要： | 用面内云纹和影像云纹相结合的方法，测量了高纯铝多晶大晶粒试样的细观变形场。观察记录了晶界滑错，晶粒刚体转动，三晶交点处变形场和应变场。由于晶界滑错在晶界两侧存在高剪应变差，晶粒内塑性变形由均匀到非均匀布，多晶体出现不稳定的塑性流动，直至破裂。
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| 关 键 词： | 滑错 昌粒 细观力学 云纹 |
Measurement of mesodeformation for polycrystal specimen |
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| Liu Baochen, Cao Qiuliang.Measurement of mesodeformation for polycrystal specimen[J].Journal of Tsinghua University(Science and Technology),1994(5). |
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| Authors: | Liu Baochen Cao Qiuliang |
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| Abstract: | In this paper,the mesodeformation of polycrystal specimen made of high pure aluminum is measured by using moire method(in-plane and shadow moire),landsliping in the grain boundary turning round between two grains ide formation and strain-fields of the point in three grains iintersection are observed and recorded. During the landsliping of grain boundary,there is very high shearing strain of the grain boundary. The deformation of intergrain is from uniform to nouniform. Unstable plastic sliding occurs and leads to fissure. |
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| Keywords: | landslip grain mesomechanics moire |
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