A MODEL FOR THE OCCURRENCE OF SERRATED YIELDING IN SUBSTITUTIONAL ALLOYS

被引：0
|
作者：
肖林钢
李效琦
钱匡武
机构：
[1] Fuzhou University
[2] Fuzhou
[3] PRC
[4] Fuzhou
来源：
ScienceinChina,SerA. | 1990年 / Ser.A.1990卷 / 11期
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摘要：
<正> On account of the integral behavior of dislocations and the interaction between solute atoms and dislocations, a model describing the serrated yielding (i.e. the PL effect) in substitutional alloys is proposed. According to this model, the serrated yielding occurring in a certain strain rate-temperature range will disappear when the strain exceeds a proper value under certain conditions. The model has been confirmed by tensile tests and rapid changing strain rate tests on a commercial Cu-32wt.％ Zn alloy. Experimental results agree well with the predicted effects of temperature and strain rate on the critical strain for the appearance and disappearance of serrations.
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页码：1386 / 1396
页数：11
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