喷射沉积镍铝化合物,在含氧气氛的高温下,由于晶界脆化而经常具有低的塑性。但是利用热机械处理可显著改进这些合金的高温延伸率。本文介绍了这些处理以及塑性改进的效果。另外还注意到锆的作用以及锆和喷射沉积工艺之间的内在关系。 Nickel-aluminum compounds are spray deposited, often exhibiting low ductility due to grain boundary embrittlement at elevated temperatures in oxygen-containing atmospheres. However, the use of thermomechanical treatment can significantly improve the high temperature elongation of these alloys. This article describes the effects of these treatments and the plasticity improvements. In addition, attention is also paid to the role of zirconium and the intrinsic relationship between zirconium and spray deposition processes.