脉动磁场对Al-Cu合金热裂的影响

来源期刊：中国有色金属学报1997年第1期

论文作者：宁志良 徐志辉 梁维中 崔天真 杨万胜

文章页码：134 - 137

关键词：脉动磁场 Al-Cu合金 热裂

Key words：pulsating electromagnetic field Al-Cu alloy hot crack

摘    要：用对比的方法，研究了脉动磁场对Al-Cu合金热裂倾向性的影响。实验结果表明：脉动磁场具有缩小Al-Cu合金有效结晶区间、减小有效结晶区间线收缩之功能，有效地降低了Al-Cu合金热裂倾向性；磁场频率的影响为： f =19.5 Hz 时热裂纹最小，f >37.5 Hz 时影响不大。

Abstract: Under laboratory conditions, the effects of pulsating electromagnetic field on the tendency of the hot cracking of Al-Cu alloys were studied by comparative method. It was shown that pulsating electromagnetic field can contract the valid crystallization region and lessen the shrinkage of Al-Cu alloys. The tendency of hot cracking of Al-Cu alloys decreases markedly under pulsating electromagnetic field. When f is equal to 19.5Hz, the effect of pulsating electromagnetic field on the tendency of hot cracking is less than any other frequency conditions and when f is larger than 37.5Hz the pulsating electromagnetic field gives little effectson the hot cracking.