【摘要】 为了达到提高铜基合金的强度而导电率无明显下降的目的,通过添加稀土元素、形变强化和时效处理等手段制备了Cu-Cr-RE合金。研究表明,Cu-Cr-Nd/Y合金随变形量的增大,导电率也增大。在480℃,时效初期0～6 min,合金的电导率迅速上升,之后随着时效时间的增加合金的电导率没有明显变化。Cu-Cr-Nd/Y合金的硬度随Nd/Y含量的增加而增加,时效时间6 min左右能达到较大的硬度。稀土有净化合金的作用,能有效提高合金的硬度,Nd比Y能更好地净化基体。更多还原

【Abstract】 In order to improve the strength of copper-base alloys with no significant decline of the conductivity,Cu-Cr-RE alloys were prepared by adding rare earth elements,strain hardening and aging.Studies have shown that the conductivity of Cu-Cr-Nd/Y alloys increases with the increase of deformation.At 480 ℃,during the aging time of 0~6 min,there is a rapid increase in conductivity of the alloy.After that,with the increase of aging time,the conductivity of the alloy does not change significantly.The hardness of Cu-Cr-Nd/Y alloy increases with the increase of Nd/Y content and achieve a greater value at aging time of 6 min or so.Rare earth elements can purify the alloy and effectively improve the hardness of the alloy.Nd is better than Y in purifying the matrix.更多还原