XLVIII. The effect of small amounts of cold-work on Young's Modulus of copper
XLVIII. The effect of small amounts of cold-work on Young's Modulus of copper
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四十八．
DOI：
10.1080/14786440508520330
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发表时间：
1953
期刊：
影响因子：
--
通讯作者：
A. Smith
中科院分区：
文献类型：
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作者：
A. Smith
总结研究了少量塑性延伸（1-8%）和随后的低温退火（50-100°c）对铜杨氏模量的影响。结果证实了先前的工作，即模量降低约11%，其中大部分在100°C下延长退火后可恢复。这种减少归因于位错环中相对移动的螺旋成分的弹性振荡，而回复则是由交叉滑移造成的这些成分成对湮灭而引起的，如莫特（1952）所建议的。在回收过程的分析中，假设将两个螺杆组件移动到一起所需的活化能不是唯一的，而是以高斯方式关于平均值分布。对于O.F.H.C：铜，当添加量为1%时，平均值为25000卡/摩尔，对于相同的材料，当添加量为8.4%时，平均值为21500卡/摩尔。
Summary The effect on Young's Modulus of copper of small amounts of plastic extension (1–8%) and subsequent low temperature annealing (50–100°c) has been studied. The results confirm previous work that there is a reduction of about 11% in the modulus, the greater part of which is recoverable after prolonged annealing at 100°c. The reduction is attributed to the elastic oscillation of the relatively mobile screw components of dislocation loops, recovery being caused by the annihilation of such components in pairs by cross-slip, as suggested by Mott (1952). In an analysis of the recovery process it is assumed that the activation energy required to move the two screw components together is not unique but is distributed in a Gaussian manner about a mean. This mean value is found to be 25 000 cals/mole for O.F.H.C: copper extended by 1% and 21 500 cals/mole for the same mgterial extended by 8.4%.
DOI：
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发表时间：
2006
期刊：
Mater. Sci. Eng. A 442
影响因子：
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作者：
Y. Nishino;S. Deguchi U. Mizutani;N. Ide T. Atsumi Y. Nishino
通讯作者：
N. Ide T. Atsumi Y. Nishino