(1. 北京航空材料研究院， 北京100095;
2. 北京航空航天大學(xué) 材料科學(xué)與工程學(xué)院， 北京 100083)
摘 要: 為滿足超塑成形對(duì)晶粒尺寸的要求， 選擇Al-Mg（5083）合金， 利用反應(yīng)噴射沉積的方法用N2-O2混合霧化氣體進(jìn)行噴射沉積。 結(jié)果表明： 沉積態(tài)的微觀組織由等軸晶粒組成， 晶粒尺寸隨著霧化氣體中O2含量的提高而減小， 過熱溫度和微量Zr元素的添加對(duì)晶粒尺寸也有一定的影響。
關(guān)鍵字: 反應(yīng)噴射沉積； Al-Mg（5083）合金； Zr； 微觀組織
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
