研究了退火、淬火状态下Al-Mg 合金的晶界内耗。实验表明,随Mg 含量的增加,晶界内耗峰的峰宽和弛豫强度单调下降,峰位开始移向高温,后又移向低温;高温淬火处理能压低Al-2.4wt-%Mg的晶界峰,但对其它低Mg 含量试样不敏感,一定温度的保温能使压低的晶界峰回升。
The grain boundary internal friction of a series of Al-Mg alloys afterannealing,quenching has been investigated.Experimental results show that,with increasingof Mg content,the width and relaxation strength of grain boundary internal friction peak de-creas
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