金属铍的微屈服行为及机理

Micro-yield behavior and mechanism of beryllium metal

为研究金属铍的微屈服行为,通过透射电镜观察了1×10-6、50×10-6和200×10-63种不同微屈服阶段材料位错的变化,初探了铍的微屈服机理。通过130多个铍试样的微屈服强度与屈服强度的比较试验证明,用常规简单的屈服强度试验代替冗长的微屈服强度试验是可能的。

In order to study the micro-yield behavior of beryllium metal, the dislocation changes of the material were observed at three kinds of micro-yield region with strain of 1×10^(-6), 50×10^(-6) and 200×10^(-6) by TEM and the micro-yield mechanism of beryllium was approached. Through comparison between the micro-yield strength value of and the corresponding yield strength value of more than 130 samples, it is shown that the tedious micro-yield tests can be replaced by common and simple yield tests.