(1. 北京航空材料研究院， 北京100095;
2. 北京航空航天大学 材料科学与工程学院， 北京 100083)
摘 要: 为满足超塑成形对晶粒尺寸的要求， 选择Al-Mg（5083）合金， 利用反应喷射沉积的方法用N2-O2混合雾化气体进行喷射沉积。 结果表明： 沉积态的微观组织由等轴晶粒组成， 晶粒尺寸随着雾化气体中O2含量的提高而减小， 过热温度和微量Zr元素的添加对晶粒尺寸也有一定的影响。
关键字: 反应喷射沉积； Al-Mg（5083）合金； Zr； 微观组织
reactive spray deposition
（1. Beijing Institute of Aeronautical Materials,
Beijing 100095, China;
2. School of Materials Science and Engineering,
Beijing University of Aeronautics and Astronautics,
Beijing 100083, China）
Abstract:The reactive spray-deposition processing was implemented to reduce the grain size for superplasticity. A typical Al-Mg alloy(5083) was selected and was sprayed by using N2-O2 atomization gas mixtures. The as-deposited microstructure reveals an equiaxed grain morphology, and the grain size decreases with increasing atomization gas oxygen content and is affected by the superheat temperature and small additions of Zr.
Key words: reactive spray-deposition; Al-Mg alloy(5083); Zr; microstructure
