Duplex surface layer treatment of Al alloy: electron beam alloying and plasma nitriding
Duplex surface layer treatment of Al alloy: electron beam alloying and plasma nitriding
复制标题
铝合金的双重表面层处理：电子束合金化和等离子渗氮
DOI：
10.1179/174951409x12542264514284
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
H. Biermann
中科院分区：
文献类型：
--
作者：
A. Dalke;A. Buchwalder;R. Zenker;H. Biermann
抽象合金由于其低密度、比强度和加工性能，作为轻质建筑材料具有很高的潜力。但其硬度低、耐磨性能差，限制了其应用领域。电子束合金化和等离子体氮化相结合的双相表面处理为在铝合金表面制备坚硬耐磨的表层提供了一种可能性。EB合金面层作为硬氮化铝涂层的支撑层，提高了涂层的承载能力。本文研究了Al-5083 （AlMg4·5Mn0·7）铝合金的双相处理。在进行EB处理之前，合金材料的沉积是通过大气等离子喷涂进行的。不同的夹芯层分别以Al和Fe为基础，得到了应用。测试了不同的梁挠曲技术，并评估了它们对表面变形、显微组织和硬度的影响。采用等离子体渗氮的方法，对其性能进行了评价。
AbstractAl alloys offer a high potential as lightweight construction materials due to their low density, specific strength and processing properties. However, the field of application is limited by their low hardness and poor wear properties. Duplex surface treatment combining electron beam (EB) alloying and plasma nitriding offers one possibility to produce hard and wear resistant surface layers on Al alloys. The EB alloyed surface layer acts as supporting layer for the hard AlN coating so that the load bearing capacity can be enhanced. In the present study duplex treatment of Al-5083 (AlMg4·5Mn0·7) Al alloy has been investigated. Before the EB treatment alloying material deposition was carried out by atmospherically plasma spraying. Various sandwich layers based on Al and Fe respectively, have been applied. Different beam deflection techniques have been tested and their effect on surface deformation, microstructure and hardness was evaluated. Plasma nitriding was carried out in order to evaluate the nit...