航空学报 > 1995, Vol. 16 Issue (6): 740-743

7075铝合金在超塑处理和拉伸过程中的显微组织变化

刘润广, 崔约贤, 张宏征, 彭福林   

  1. 1. 哈尔滨工业大学锻压教研室,哈尔滨,150001;2. 哈尔滨飞机制造公司,哈尔滨,150066
  • 收稿日期:1993-12-29 修回日期:1994-05-03 出版日期:1995-12-25 发布日期:1995-12-25

MICROSTRUCTURAL CHANGE OF ALUMINIUM ALLOY 7075 DURING SUPERPLASTIC THERMOMECHANICAL PROCESS AND TENSILE TEST

Liu Runguang, Cui Yuexian, Zhang Hongzheng, Peng Fulin   

  1. 1. Faculty of fo rging, Harbin Inst itute of Techno logy, Harbin, 150001;2. Harbin Aircraft Manufactory, Harbin,150066
  • Received:1993-12-29 Revised:1994-05-03 Online:1995-12-25 Published:1995-12-25

摘要: 研究了 70 75铝合金在超塑性预处理和拉伸过程。结果表明 ,合金经过固溶处理炉冷→轧制预处理后 ,形成 1~ 2 μm的胞块组织。在超塑拉伸过程中胞块发生回复和再结晶 ,形成细晶组织 ,使合金获得优异的超塑性性能

关键词: 铝合金, 超塑性, 显微结构

Abstract: The microstructural variety of an aluminum alloy 7075 during the superplastic thermomechanical process and tensile test was studied. The results show that the cellular microstructure (1~2μm) was formed after solution treated,furnace cooling→rolling. The alloy was recoverd and recrystallijed during the superplastic tensile test. The resultant microstructure with fine grains exhibited excellent superplasticity.

Key words: aluminum alloy, superplasticity, microstructure

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