Extension of Measurements of the Tensile Flow Stress of High-Purity α-Iron Single Crystals to Very Low Temperatures
Extension of Measurements of the Tensile Flow Stress of High-Purity α-Iron Single Crystals to Very Low Temperatures
复制标题
将高纯 α-铁单晶拉伸流动应力的测量扩展到极低温度
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
J. Diehl
中科院分区：
文献类型：
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作者：
D. Brunner;J. Diehl
通过在不同温度下的连续拉伸变形步骤并结合应力松弛实验，对高纯α-Fe单晶的流变应力进行了测量，测量范围扩展到4K左右。流变应力的温度依赖性可以很好地用Seeger的螺旋位错中的扭结对形成理论和具有几乎恒定的指前因子的Arrhenius方程来描述
Measurements on the flow stress of high-purity α-Fe single crystals, carried out by successive tensile deformation steps at different temperatures and combined with stress-relaxation tests, were extended to about 4 K. The temperature dependence of the flow stress down to the lowest temperatures can be described very well by Seeger's theory of kink-pair formation in screw dislocations and an Arrhenius equation with an almost constant preexponential factor